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Research ArticleEvolution and Differentiation of High-Quality Development ofMarine Economy A Case Study from China
Bo Li1 Chuang Tian 2 Zhaoyuan Shi 3 and Zenglin Han 1
1Center for Studies of Marine Economy and Sustainable Development Liaoning Normal University Dalian 116029 China2School of Maritime Economics and Management Dalian Maritime University Dalian 116026 China3School of Geography and Planning Sun Yat-Sen University Guangzhou 510275 China
Correspondence should be addressed to Chuang Tian tcyeahdlmueducn and Zenglin Han hzllnnueducn
Received 21 April 2020 Accepted 29 May 2020 Published 11 July 2020
Guest Editor Jianhong (Cecilia) Xia
Copyright copy 2020 Bo Li et al -is is an open access article distributed under the Creative Commons Attribution License whichpermits unrestricted use distribution and reproduction in any medium provided the original work is properly cited
High-quality development is an innovative way to promote the sustainable development of the marine economy -is study usesChinarsquos coastal areas as an example constructing a research framework for the high-quality development of the countryrsquos marineeconomy -e temporal and spatial variation in the high-quality development of Chinarsquos marine economy from 2006 to 2016 isexplored utilizing the nuclear density estimation entropy and mean standard deviation classification methods -e results showthe following (1) the policy orientation of Chinarsquos high-quality marine economic development is obvious and the focus of policyhas changed from the pursuit of growth speed to growth quality (2) a spatiotemporal differentiation is evident with the coastalareas of the Yangtze River Delta continuing to be the hotspots of high-quality development -e Bohai rim and Pan Pearl RiverDelta areas feature a mixture of cold and hot spots with multipolar spatial differentiation (3) in terms of development stageGuangdong Shanghai Shandong Zhejiang and Tianjin are at advanced levels -e intermediate-level areas consist of FujianJiangsu Hainan and Liaoning while Hebei and Guangxi are the primary-level areas
1 Introduction
By the end of the 20th century many Nobel Prize winnershad reached a consensus on the top ten problems facinghumanity in the next half century energy water foodenvironment poverty terrorism and war disease educa-tion democracy and population [1] In fact countriesaround the world have started to focus on oceansrsquo sus-tainability because of survival risks and potential resourcescarcity As a key to implementing national marine strate-gies coastal cities play a significant role in land-sea inter-actions and marine-related human activities -ese cities arefacing multiple threats from high-density agglomerationhigh-intensity development and high levels of pollution andecological risks [2 3] It has been widely recognized bycoastal cities that socioecological models must be explored toimprove the sustainable development [4 5]
-e 21st century has witnessed the comprehensive ex-ploration and utilization of oceanic resources Given the
concept of sustainability and the development of marineeconomy examining how to shift the marine economy awayfrom an extensive type has become a topic of research amongscholars and governments -e common objective now forcoastal countries is to achieve sustainable growth of themarine economy by solving historical environmental issuessuch as ldquoinadaptabilityrdquo and ldquoincompatibilityrdquo [6ndash8]
Many of the existing studies on the growth of the marineeconomy qualitative analysis as the main line and quanti-tative analysis as the research framework [9] mainly causeanalysis of the aggregate economy [10] and comparativestudies [11] -e research focus of the previous literaturetends to switch between the macroscale and the microscaleIn fact research continues to be refined at each scale andamong internal units and is beginning to focus more at-tention on the operations of marine economies at the mi-croeconomic level [12] Based on the changes in the externalenvironment of the marine economy as well as the dynamicevolution of internal structures the comprehensive study of
HindawiComplexityVolume 2020 Article ID 5624961 11 pageshttpsdoiorg10115520205624961
typical regions and specific case analysis have become keyresearch areas Furthermore popular research topics includediagnostic analysis of the threats to the interactive rela-tionship [13 14] risk assessment of the pathological pursuitof economic growth [15 16] coupled and coordinateddevelopment [17 18] threshold and carrying capacity [19]and accounting for resource depletion [20 21] Relatedresearch focuses on how to achieve sustainable developmentof the marine economy though the emphasis has shiftedfrom understanding the rate at which the marine economy isgrowing to the quality of sustainable marine economicgrowth [22]
In China 43 of the countryrsquos population live in coastalareas forming more than 55 of the gross national product(GNP) Coastal areas have absorbed approximately 80 ofdirect investment and received more than 90 of the totalimport and export trade allowing it to become a powerfulengine for the development of the national economy -usthe development of coastal cities has an influence on therunning situation of the entire country Chinarsquos focus on thetransformation of themarine economy is shifting from high-speed growth to high-quality development given the in-creasing pressure to preserve resources and the environmentin coastal areas in order to be innovative in realizing thesustainable development of the marine economy [23]
Existing literature on the growth of the marine economyfocuses more on the magnitude of growth with little researchbeing conducted on the quality of growth Traditional marineeconomic growth emphasizes the speed of growth whilehigh-quality development emphasizes the advantages anddisadvantages of growth -e negative effects of the externalenvironment such as shrinking demand and diminishingdemographic dividend have forced the development of themarine economy under the constraint of a structural slow-down crisis to shift to the long-term perspective in terms ofspeed structure and power changes in time and space so asto achieve sustainable growth and improve human welfare[24] It aims to optimize the structure of marine industriespromote marine social welfare and enhance the marineecological environment based on the improvement of thecomprehensive strength of the marine economy [8 22 25] Inparticular the human-ocean system and its subsystems arethe main areas where high-quality development can improvethe marine economy while carriers that support the devel-opment of the marine economy are areas that can improvemarine economic activity at all levels Relevant carriersachieve the coordination and healthy development of thesystems via the exchange of substance and information on thehuman-ocean system [24]
-is study uses Chinarsquos coastal areas as an exampleconstructing a research framework for the high-qualitydevelopment of the countryrsquos marine economy -e tem-poral and spatial variation of the high-quality developmentof Chinarsquos marine economy from 2006 to 2016 is explored byutilizing the nuclear density estimation entropy and meanstandard deviation classification methods We identify thedevelopment stages and specific research sample types inorder to contribute to the sustainable development of thenational marine economy
-e high-quality development of Chinarsquos marine econ-omy mainly relies on guidance from the national macro-economic marine policy and the supplementary promotion oflocal targeted maritime laws and regulations -e release ofcoastal policies has changed over time from a brief andscattered pattern to a systematic and intensive pattern whilethe focus of the policies has shifted from the growth rate to thequality of marine economic development (Figure 1)
2 Method
21 Variable Selection and Processing Based on the analysisof the features that define the quality of marine economicdevelopment (Figure 2) an index system for the high-qualitydevelopment of the marine economy was constructed asshown in Table 1 -e variable for maritime comprehensivestrength reflects the material basis for the high-quality de-velopment of the marine economy and mainly includes thescale and indicators of the economic expansion of themarine economy -e structure of marine industries is anindicator for the proportion and output of three sectors ofthe maritime economy and reflects their level of structuraloptimization as well as the internal structure and growthpattern of marine economic development Marine socialwelfare is reflected in the indicator for the benefits broughtto the public through the high-quality development of themarine economy such as employment livelihood scienceand technology and income these also reflect the goals ofmarine economic development Marine ecological envi-ronment represents the indicator for the protection anddestruction of the marine environment which mainly re-flects the price paid for achieving the high-quality devel-opment of the marine economy Due to the limitation of themarine data the areas studied in this paper include 8 coastalprovinces 1 autonomous region and 2 municipalities(excluding Hong Kong Macao and Taiwan) in China
Specifically the calculations are as follows
(i) Marine resources are a weighted sum of marinespatial resources (eg sea area coastline andseabed) marine biological resources (eg volumeof marine aquaculture and amount of marinefishing) marine chemical resources (eg sea salt)marine mineral resources (oil and natural gas) andmarine tourism resources (eg star hotels incoastal areas)
(ii) Index of market organizations in coastal area-s total industrial output of coastal areastotalnumber of coastal industries
(iii) Fiscal self-financing rate in coastal areas revenuewithin general budgets of local governments incoastal areasexpenditure within general budgetsof local governments
(iv) -e level of support by national policies is rated asldquo3rdquo ldquo2rdquo or ldquo1rdquo according to the frequency ofoccurrences of the arearsquos name and the number ofsupporting policies in national marine policies andregulations
2 Complexity
(v) Fluctuations of marine economic growth (growthrate of marine economy in the same year minus growthrate of marine economy in the previous year)growth rate of marine economy in the previousyear
(vi) Index of upgrading of marine industries outputof marine tertiary industryoutput of marine sec-ondary industry
(vii) Location quotient of marine industries (outputof marine industries in the regiongross output of
1949~1978
(i) Extensive development
period
1979~1990
(i) The initial stage of reform and
opening up the growth of marine
economy is the main part
supplemented by the development
and protection
(i) Establishing the concept of sustainable
development in the field of
marine economy
(i) Deepen the development of
both quantity and quality and promote the
common development of
marine economy and ecology
(i) lsquoNew normal of economyrsquo
(ii) Marine economy develops to high
quality on the basis of land and sea coordination
1991~2000 2001~2010 2011~Now
Figure 1 Chinarsquos marine policy stage
Time scale
External environment Internal structure Dynamic mechanism
Regional marine economy B
Regional marine economy A Active subject
Economic climate
Activity space
Development results
middotmiddotmiddotmiddotmiddot
Marine social system
Marine economic
system
Marine ecosystem
Spatial transfer
Marine policyMarine cultureGeorelationship
Globalization
Marine industryRelated employmentMarine investment
Marine ecology
Political spaceCapital power
Labor divisionMarine Technology
High-quality development of marine economy
Growth rate of marine economy
Economic climate
Activity space
Development results
middotmiddotmiddotmiddotmiddot
Materia
l cycle
Synergistic effect Benign
feed
back
Dynamic equilibrium
Macrosca
le
Middle-sca
le
Microsca
le
Figure 2 -e features of the high-quality development of marine economy
Complexity 3
Tabl
e1
Evaluatio
nsystem
ofthehigh
-qualitydevelopm
entof
marineecon
omy
Firstlevelind
exSpecificindicators
Indexinterpretatio
nWeigh
t
Com
prehensiv
estreng
thof
marineecon
omy
Gross
oceanprod
uct(G
OP)
Reflectingthematerialb
asisprovided
bythescaleexpansionof
marineecon
omyforthe
high
-qualitytransformationof
marineecon
omy
0041
Actualu
tilizationof
foreigncapital
Reflectingtheimpactof
openingup
ontheh
igh-qu
ality
transformationof
marinee
cono
my
0046
Internationalc
ontainer
traffi
cRe
flectingthecontribu
tionof
marineinfrastructure
constructio
nto
thehigh
-qualityof
marineecon
omy
0058
Econ
omic
density
ofcoastline
Reflectingtheprod
uctio
nvitalityof
marineecon
omyin
coastala
reas
0065
Marineresource
cond
ition
sRe
flectingtherelatio
nshipbetweenmarinespacebiology
mineral
resourcesandhigh
-qu
ality
developm
entof
marineecon
omy
0054
Marketo
rganizationindex
Reflectingthem
arketh
interla
ndrsquosabilityto
accept
theh
igh-qu
ality
structureprod
uctsand
services
ofthemarineecon
omy
0042
Fixedassets
investment
Reflectingtheservicestreng
thof
searelatedcapitaltomarineecon
omywith
high
quality
0043
Marineprofessio
nala
ndtechnicalp
ersonn
elRe
flectingthesupp
ortin
groleof
marinetalentsinthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0043
Financialself-sufficiency
rate
Reflectingthefi
nancialsup
portofgovernmentfi
nancetotheh
igh-qu
ality
transformationof
marineecon
omy
0010
Nationalp
olicysupp
ort
Reflectingtheguidance
ofnatio
nalp
olicyenvironm
enttothehigh
-qualitydevelopm
ento
fmarineecon
omy
0114
Fluctuationof
marineecon
omic
grow
thRe
flectingtherestrictionof
theflu
ctuatio
nrisk
forthe
high
-qualitydevelopm
ento
fmarine
econ
omy
0009
Marineindu
strial
structure
Con
tributionrateof
marinesecond
aryindu
stry
andtertiary
indu
stry
Internal
indu
strial
structurerequ
irem
ents
reflectinghigh
-qualitydevelopm
entof
marine
econ
omy
0044
Value
addedfrom
major
marineindu
stries
Reflectingtheflo
atingdegree
ofmajor
marineindu
stries
intheprocessof
high
-quality
transformationof
marineecon
omy
0039
Advancedindexof
marineindu
stry
Reflectingtherelatio
nshipbetweentheadvanced
degree
ofmarineindu
strialstructureand
thehigh
quality
ofmarineecon
omy
0038
Locatio
nentrop
yof
marineindu
stry
Reflectingtheim
pactof
thechange
ofmarineindu
strialstructureandland
linkage
onthe
high
-qualitydevelopm
entof
marineecon
omy
0061
Con
versionrateof
nonfi
sherymarineindu
strial
structure
Reflectingtheinflu
ence
oftheop
timizationspeedof
marineindu
stry
compo
sitionon
the
high
quality
ofmarineecon
omy
0063
Marinesocial
welfare
Marine-relatedem
ployment
Reflectingtheem
ploymentwelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marine
econ
omy
0062
Marinefishing
yield
Reflectingthelifewelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marineecon
omy
0065
Disp
osable
incomeof
coastalu
rban
resid
ents
Reflectingtheincom
eand
welfarebrou
ghtb
yhigh
-qualitydevelopm
entofm
arinee
cono
my
0033
Num
berof
marinescientificresearch
institu
tions
Reflectingthescientifi
cand
techno
logicalbenefitsbrou
ghtb
ytheh
igh-qu
ality
developm
ent
ofmarineecon
omy
0033
Marineecological
environm
ent
Num
berof
marinenature
reserves
Environm
entalp
rotectionforhigh
quality
developm
entof
marineecon
omy
0031
Directe
cono
mic
loss
ofmarinedisaster
Reflectingtheenvironm
entalc
osts
paid
forthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0007
Noteindexdataarec
ollected
bythec
itiesin
thec
oastalareasandtheo
riginaldataa
redimensio
nlessp
rocessedC
hinarsquosmarined
ataa
remainlyfrom
ChinarsquosMarineS
tatisticalYe
arbo
okw
hileotherresearchdata
arefrom
thegovernmentw
orkrepo
rtssocialdevelopm
entstatisticsb
ulletin
sdepartmentalpoliciesanddo
cumentsof
coastalcities-
roughthep
urchasecollectionprocessin
gandcomparisonof
marined
ata
wefoun
dthat
themarinedata
fortheresearch
areasarerelativ
elycompleteandsufficientas
wella
sscientificandob
jectivefortheperiod
2006
to2016thereforethisresearch
cyclewas
chosen
4 Complexity
all industries in the region)(output of marineindustries in the countrygross output of all in-dustries in the country)
(viii) Ratio of structural changes in marine industries(except fisheries)
1113936ni1((Ni minus G)2 times Ki)G
1113969
whereNi is the output of marine industries (except fisheries)G refers to the average annual growth rate of gross oceanproduct and K represents the proportion of the output ofmarine industries (except fisheries) in the gross oceanproduct
22 Entropy Method -e entropy method is a mathe-matical method used to judge the dispersion degree of anindex -e greater the degree of dispersion the greater theimpact of this index is on the comprehensive evaluation Itis an objective weighting method adopted to determine theweight of the relevant indicators in order to improve theaccuracy and validity of the score for the high-qualitydevelopment of the marine economy [26 27] By stan-dardizing the original data [28] and then calculating theweight of relevant indicators (which can be used to evaluatethe high-quality development of the marine economy inspatial samples) we can then calculate the total score forChina
23 Kernel Density Estimation Kernel density estimation(KDE) is used to estimate the probability density functionof a random variable in the probability theory which canreveal the evolution of the high-quality development of themarine economy in a temporal dimension [22 29] Timeseries analysis of the waveform position and kurtosis of aKDE curve can reveal the pattern of dynamic changes of thehigh-quality development of the marine economy on thetime scale For data x1 x2 x3 xn its KDE can beexpressed as
^fh(x) 1
nh1113944
n
i1K
x minus xi
h1113874 1113875 (1)
where the kernel function K is a weight function h refers tothe bandwidth and x minus xi represents the distance between xand xi Commonly used kernel functions include uniformtriangle gamma and Gaussian kernel functions Accordingto the density of the selected data Gaussian kernel functionwas adopted for this study
Gaussian 12π
radic eminus (12)t2
(2)
-e bandwidth hwas selected as h 09SN minus 08 based onSilvermanrsquos rules and S was the standard deviation of theobserved value of the random variable [30]
3 Results
31 Characteristics of Temporal Evolution -e entropymethod was used to calculate the score for the high-qualitydevelopment of the marine economy and the temporal
variation of the development was investigated using the KDE(Figure 3(a)) In terms of the shape of the kernel the KDEwaveform showed a multimodal distribution -e kerneldensity distribution corresponding to the peak of the curvein 2006 was scattered the difference in scores between re-gions was relatively small -e kernel density distributioncorresponding to the peak of the curve in 2016 was relativelyconcentrated and the gap in the quality of marine eco-nomics between regions widened From 2006 to 2016 thepeaks of the kernel density curve all shifted to the right withhigher fluctuations of the score the high-quality develop-ment of the marine economy steadily improved indicatingldquoclub convergencerdquo
In order to explore the time evolution of the high-qualitydevelopment of the marine economy in China over a longerperiod of time the development was divided into threestagesndashprimary fluctuation and stable stages with 004(standard deviation set) as the cutoff point -e quantitativedivision of the stages of development against scores is moreobjective than qualitative division From 2006 to 2009 thedevelopment of Chinarsquos marine economy was in the primarystage that is it was of relatively low quality From 2010 to2014 the development of Chinarsquos marine economy was inthe fluctuation stage and was of medium quality Between2015 and 2016 the development of Chinarsquos marine economyentered a stable stage of high quality (Figure 3(b)) Chinarsquosmarine economic growth has significantly decreasedmdashthemarine economy has changed from a high-speed growthstage to a high-quality development stage with such atransformation being urgently required (Figures 3(c) and3(d))
32 Characteristics of Spatial Evolution Natural breakclassification was adopted to divide the primary inter-mediate and advanced stages of the high-quality devel-opment to explore the spatial evolution of the marineeconomy From 2006 to 2016 the coastal areas of theYangtze River Delta (YRD) continued to be the hot spots ingeneral -e coastal areas of the Pearl River Delta (PRD)and the Bohai Economic Rim (BER) showed a mix of hotand cold spots -e spatial evolution of the high-qualitydevelopment of the marine economy was basically estab-lished based on this data
In 2006 Guangdong Shanghai Zhejiang and Shan-dong Provinces were in the advanced stage of high-qualitydevelopment Tianjin Jiangsu Fujian and HainanProvinces were in the intermediate stage and GuangxiHebei and Liaoning Provinces were in the primary stageIn 2010 Guangdong Shanghai and Shandong Provinceswere in the advanced stage Tianjin Jiangsu ZhejiangFujian and Hainan Provinces were in the intermediatestage and Guangxi Hebei and Liaoning Provinces werein the primary stage In 2014 Guangdong ShanghaiZhejiang Tianjin and Shandong Provinces were in theadvanced stage Jiangsu Fujian Hainan and LiaoningProvinces were in the intermediate stage Guangxi andHebei Provinces were in the primary stage By 2016 thehigh-quality development of Chinarsquos marine economy
Complexity 5
became multipolar alternating between high mediumand low qualities showing a multipeak distribution(Figure 4)
33 Type Identification Coastal areas in China were cate-gorized into three types based on their scores for high-quality development of the marine economy using themean-standard deviation classification [31] -e mean-standard deviation classification is mainly based on thedeviation of the data itself which fits the actual situationbetter than the other classification methods types MgtAsuggests an advanced-level area A minus SDltMltA refers to anintermediate-level area andMltA minus SD indicates a primary-level area where M is the score for the high-quality de-velopment of the sample marine economy A is the averageannual score and SD is the standard deviation From 2006 to2016 the average score (A) for the high-quality developmentof Chinarsquos marine economy (M) was 035 and the standarddeviation (SD) was 013 -erefore the score range foradvanced-level areas was 035ndash100 the score range for
intermediate-level areas was 022ndash035 and the score rangefor primary-level areas was 000ndash022
34 Advanced-Level Areas Tier I areas are advanced-levelareas which include Guangdong Shanghai ShandongZhejiang and Tianjin -e following describes each area inrelation to sustainable growth in the marine economy
(1) Guangdong Province benefits from a large numberof land-based economies and its marine economy isstrongly driven by economic hinterland marketabsorption offshore finance and high technologies-e rapid expansion of Guangdongrsquos marine econ-omy forms a solid foundation for the transformationof the marine economy from high-speed to high-quality development
(2) Shanghai is the core area in the YRD region Itexhibits unique advantages for the development ofthe marine economy given its importance in na-tional strategies identity as an international city
Den
sity
00
04
08
12
16
20
24
28
32
00 01 02 03 04 05 06 07 08ndash01Score of high-quality development of marine economy
20062010
20142016
(a)
Primary stage
Fluctuation stage Stablestage
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006025
027
029
031
033
035
037
039
041
(Sco
re)
(b)
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
(Yua
n)
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006
GOPGDP
(c)
000
005
010
015
020()
025
030
035
2008 2010 2012 2014 20162006
GOPGDP
(d)
Figure 3 Time evolution and stage division of the high-quality development of marine economy (a) Nuclear density distribution (b) Timestage (c) GOP and GDP output (d) Growth rate of GOP and GDP
6 Complexity
gathering of talents in marine science and technol-ogy and superior geographical location and richmarine resources Shanghai has historically alwaysbeen in a unique position in Chinarsquos marineeconomy
(3) As a large coastal province in Eastern ChinaShandong Province has achieved high added valuesfrom several industries such as marine fishery andmarine transportation which were at the forefront ofthe country After the proposal of developing a ldquoBlue
2006 2010
2014 2016
0 0kmkm
0km
0km
South China Sea
Diaoyu Islands
800 800
800800
Primary stageIntermediate stageAdvanced stage
N
(a)
2006 2010 2014 2016
00097ndash0168001681ndash0238102382ndash0308203083ndash0378303784ndash04486
01211ndash0199101992ndash0227102772ndash0355103552ndash0433104332ndash05112
01528ndash0236102362ndash0319303194ndash0402604027ndash0485904860ndash05692
01680ndash0257702578ndash0347503476ndash0437204372ndash0526905270ndash06168
(b)
Figure 4 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 7
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
typical regions and specific case analysis have become keyresearch areas Furthermore popular research topics includediagnostic analysis of the threats to the interactive rela-tionship [13 14] risk assessment of the pathological pursuitof economic growth [15 16] coupled and coordinateddevelopment [17 18] threshold and carrying capacity [19]and accounting for resource depletion [20 21] Relatedresearch focuses on how to achieve sustainable developmentof the marine economy though the emphasis has shiftedfrom understanding the rate at which the marine economy isgrowing to the quality of sustainable marine economicgrowth [22]
In China 43 of the countryrsquos population live in coastalareas forming more than 55 of the gross national product(GNP) Coastal areas have absorbed approximately 80 ofdirect investment and received more than 90 of the totalimport and export trade allowing it to become a powerfulengine for the development of the national economy -usthe development of coastal cities has an influence on therunning situation of the entire country Chinarsquos focus on thetransformation of themarine economy is shifting from high-speed growth to high-quality development given the in-creasing pressure to preserve resources and the environmentin coastal areas in order to be innovative in realizing thesustainable development of the marine economy [23]
Existing literature on the growth of the marine economyfocuses more on the magnitude of growth with little researchbeing conducted on the quality of growth Traditional marineeconomic growth emphasizes the speed of growth whilehigh-quality development emphasizes the advantages anddisadvantages of growth -e negative effects of the externalenvironment such as shrinking demand and diminishingdemographic dividend have forced the development of themarine economy under the constraint of a structural slow-down crisis to shift to the long-term perspective in terms ofspeed structure and power changes in time and space so asto achieve sustainable growth and improve human welfare[24] It aims to optimize the structure of marine industriespromote marine social welfare and enhance the marineecological environment based on the improvement of thecomprehensive strength of the marine economy [8 22 25] Inparticular the human-ocean system and its subsystems arethe main areas where high-quality development can improvethe marine economy while carriers that support the devel-opment of the marine economy are areas that can improvemarine economic activity at all levels Relevant carriersachieve the coordination and healthy development of thesystems via the exchange of substance and information on thehuman-ocean system [24]
-is study uses Chinarsquos coastal areas as an exampleconstructing a research framework for the high-qualitydevelopment of the countryrsquos marine economy -e tem-poral and spatial variation of the high-quality developmentof Chinarsquos marine economy from 2006 to 2016 is explored byutilizing the nuclear density estimation entropy and meanstandard deviation classification methods We identify thedevelopment stages and specific research sample types inorder to contribute to the sustainable development of thenational marine economy
-e high-quality development of Chinarsquos marine econ-omy mainly relies on guidance from the national macro-economic marine policy and the supplementary promotion oflocal targeted maritime laws and regulations -e release ofcoastal policies has changed over time from a brief andscattered pattern to a systematic and intensive pattern whilethe focus of the policies has shifted from the growth rate to thequality of marine economic development (Figure 1)
2 Method
21 Variable Selection and Processing Based on the analysisof the features that define the quality of marine economicdevelopment (Figure 2) an index system for the high-qualitydevelopment of the marine economy was constructed asshown in Table 1 -e variable for maritime comprehensivestrength reflects the material basis for the high-quality de-velopment of the marine economy and mainly includes thescale and indicators of the economic expansion of themarine economy -e structure of marine industries is anindicator for the proportion and output of three sectors ofthe maritime economy and reflects their level of structuraloptimization as well as the internal structure and growthpattern of marine economic development Marine socialwelfare is reflected in the indicator for the benefits broughtto the public through the high-quality development of themarine economy such as employment livelihood scienceand technology and income these also reflect the goals ofmarine economic development Marine ecological envi-ronment represents the indicator for the protection anddestruction of the marine environment which mainly re-flects the price paid for achieving the high-quality devel-opment of the marine economy Due to the limitation of themarine data the areas studied in this paper include 8 coastalprovinces 1 autonomous region and 2 municipalities(excluding Hong Kong Macao and Taiwan) in China
Specifically the calculations are as follows
(i) Marine resources are a weighted sum of marinespatial resources (eg sea area coastline andseabed) marine biological resources (eg volumeof marine aquaculture and amount of marinefishing) marine chemical resources (eg sea salt)marine mineral resources (oil and natural gas) andmarine tourism resources (eg star hotels incoastal areas)
(ii) Index of market organizations in coastal area-s total industrial output of coastal areastotalnumber of coastal industries
(iii) Fiscal self-financing rate in coastal areas revenuewithin general budgets of local governments incoastal areasexpenditure within general budgetsof local governments
(iv) -e level of support by national policies is rated asldquo3rdquo ldquo2rdquo or ldquo1rdquo according to the frequency ofoccurrences of the arearsquos name and the number ofsupporting policies in national marine policies andregulations
2 Complexity
(v) Fluctuations of marine economic growth (growthrate of marine economy in the same year minus growthrate of marine economy in the previous year)growth rate of marine economy in the previousyear
(vi) Index of upgrading of marine industries outputof marine tertiary industryoutput of marine sec-ondary industry
(vii) Location quotient of marine industries (outputof marine industries in the regiongross output of
1949~1978
(i) Extensive development
period
1979~1990
(i) The initial stage of reform and
opening up the growth of marine
economy is the main part
supplemented by the development
and protection
(i) Establishing the concept of sustainable
development in the field of
marine economy
(i) Deepen the development of
both quantity and quality and promote the
common development of
marine economy and ecology
(i) lsquoNew normal of economyrsquo
(ii) Marine economy develops to high
quality on the basis of land and sea coordination
1991~2000 2001~2010 2011~Now
Figure 1 Chinarsquos marine policy stage
Time scale
External environment Internal structure Dynamic mechanism
Regional marine economy B
Regional marine economy A Active subject
Economic climate
Activity space
Development results
middotmiddotmiddotmiddotmiddot
Marine social system
Marine economic
system
Marine ecosystem
Spatial transfer
Marine policyMarine cultureGeorelationship
Globalization
Marine industryRelated employmentMarine investment
Marine ecology
Political spaceCapital power
Labor divisionMarine Technology
High-quality development of marine economy
Growth rate of marine economy
Economic climate
Activity space
Development results
middotmiddotmiddotmiddotmiddot
Materia
l cycle
Synergistic effect Benign
feed
back
Dynamic equilibrium
Macrosca
le
Middle-sca
le
Microsca
le
Figure 2 -e features of the high-quality development of marine economy
Complexity 3
Tabl
e1
Evaluatio
nsystem
ofthehigh
-qualitydevelopm
entof
marineecon
omy
Firstlevelind
exSpecificindicators
Indexinterpretatio
nWeigh
t
Com
prehensiv
estreng
thof
marineecon
omy
Gross
oceanprod
uct(G
OP)
Reflectingthematerialb
asisprovided
bythescaleexpansionof
marineecon
omyforthe
high
-qualitytransformationof
marineecon
omy
0041
Actualu
tilizationof
foreigncapital
Reflectingtheimpactof
openingup
ontheh
igh-qu
ality
transformationof
marinee
cono
my
0046
Internationalc
ontainer
traffi
cRe
flectingthecontribu
tionof
marineinfrastructure
constructio
nto
thehigh
-qualityof
marineecon
omy
0058
Econ
omic
density
ofcoastline
Reflectingtheprod
uctio
nvitalityof
marineecon
omyin
coastala
reas
0065
Marineresource
cond
ition
sRe
flectingtherelatio
nshipbetweenmarinespacebiology
mineral
resourcesandhigh
-qu
ality
developm
entof
marineecon
omy
0054
Marketo
rganizationindex
Reflectingthem
arketh
interla
ndrsquosabilityto
accept
theh
igh-qu
ality
structureprod
uctsand
services
ofthemarineecon
omy
0042
Fixedassets
investment
Reflectingtheservicestreng
thof
searelatedcapitaltomarineecon
omywith
high
quality
0043
Marineprofessio
nala
ndtechnicalp
ersonn
elRe
flectingthesupp
ortin
groleof
marinetalentsinthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0043
Financialself-sufficiency
rate
Reflectingthefi
nancialsup
portofgovernmentfi
nancetotheh
igh-qu
ality
transformationof
marineecon
omy
0010
Nationalp
olicysupp
ort
Reflectingtheguidance
ofnatio
nalp
olicyenvironm
enttothehigh
-qualitydevelopm
ento
fmarineecon
omy
0114
Fluctuationof
marineecon
omic
grow
thRe
flectingtherestrictionof
theflu
ctuatio
nrisk
forthe
high
-qualitydevelopm
ento
fmarine
econ
omy
0009
Marineindu
strial
structure
Con
tributionrateof
marinesecond
aryindu
stry
andtertiary
indu
stry
Internal
indu
strial
structurerequ
irem
ents
reflectinghigh
-qualitydevelopm
entof
marine
econ
omy
0044
Value
addedfrom
major
marineindu
stries
Reflectingtheflo
atingdegree
ofmajor
marineindu
stries
intheprocessof
high
-quality
transformationof
marineecon
omy
0039
Advancedindexof
marineindu
stry
Reflectingtherelatio
nshipbetweentheadvanced
degree
ofmarineindu
strialstructureand
thehigh
quality
ofmarineecon
omy
0038
Locatio
nentrop
yof
marineindu
stry
Reflectingtheim
pactof
thechange
ofmarineindu
strialstructureandland
linkage
onthe
high
-qualitydevelopm
entof
marineecon
omy
0061
Con
versionrateof
nonfi
sherymarineindu
strial
structure
Reflectingtheinflu
ence
oftheop
timizationspeedof
marineindu
stry
compo
sitionon
the
high
quality
ofmarineecon
omy
0063
Marinesocial
welfare
Marine-relatedem
ployment
Reflectingtheem
ploymentwelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marine
econ
omy
0062
Marinefishing
yield
Reflectingthelifewelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marineecon
omy
0065
Disp
osable
incomeof
coastalu
rban
resid
ents
Reflectingtheincom
eand
welfarebrou
ghtb
yhigh
-qualitydevelopm
entofm
arinee
cono
my
0033
Num
berof
marinescientificresearch
institu
tions
Reflectingthescientifi
cand
techno
logicalbenefitsbrou
ghtb
ytheh
igh-qu
ality
developm
ent
ofmarineecon
omy
0033
Marineecological
environm
ent
Num
berof
marinenature
reserves
Environm
entalp
rotectionforhigh
quality
developm
entof
marineecon
omy
0031
Directe
cono
mic
loss
ofmarinedisaster
Reflectingtheenvironm
entalc
osts
paid
forthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0007
Noteindexdataarec
ollected
bythec
itiesin
thec
oastalareasandtheo
riginaldataa
redimensio
nlessp
rocessedC
hinarsquosmarined
ataa
remainlyfrom
ChinarsquosMarineS
tatisticalYe
arbo
okw
hileotherresearchdata
arefrom
thegovernmentw
orkrepo
rtssocialdevelopm
entstatisticsb
ulletin
sdepartmentalpoliciesanddo
cumentsof
coastalcities-
roughthep
urchasecollectionprocessin
gandcomparisonof
marined
ata
wefoun
dthat
themarinedata
fortheresearch
areasarerelativ
elycompleteandsufficientas
wella
sscientificandob
jectivefortheperiod
2006
to2016thereforethisresearch
cyclewas
chosen
4 Complexity
all industries in the region)(output of marineindustries in the countrygross output of all in-dustries in the country)
(viii) Ratio of structural changes in marine industries(except fisheries)
1113936ni1((Ni minus G)2 times Ki)G
1113969
whereNi is the output of marine industries (except fisheries)G refers to the average annual growth rate of gross oceanproduct and K represents the proportion of the output ofmarine industries (except fisheries) in the gross oceanproduct
22 Entropy Method -e entropy method is a mathe-matical method used to judge the dispersion degree of anindex -e greater the degree of dispersion the greater theimpact of this index is on the comprehensive evaluation Itis an objective weighting method adopted to determine theweight of the relevant indicators in order to improve theaccuracy and validity of the score for the high-qualitydevelopment of the marine economy [26 27] By stan-dardizing the original data [28] and then calculating theweight of relevant indicators (which can be used to evaluatethe high-quality development of the marine economy inspatial samples) we can then calculate the total score forChina
23 Kernel Density Estimation Kernel density estimation(KDE) is used to estimate the probability density functionof a random variable in the probability theory which canreveal the evolution of the high-quality development of themarine economy in a temporal dimension [22 29] Timeseries analysis of the waveform position and kurtosis of aKDE curve can reveal the pattern of dynamic changes of thehigh-quality development of the marine economy on thetime scale For data x1 x2 x3 xn its KDE can beexpressed as
^fh(x) 1
nh1113944
n
i1K
x minus xi
h1113874 1113875 (1)
where the kernel function K is a weight function h refers tothe bandwidth and x minus xi represents the distance between xand xi Commonly used kernel functions include uniformtriangle gamma and Gaussian kernel functions Accordingto the density of the selected data Gaussian kernel functionwas adopted for this study
Gaussian 12π
radic eminus (12)t2
(2)
-e bandwidth hwas selected as h 09SN minus 08 based onSilvermanrsquos rules and S was the standard deviation of theobserved value of the random variable [30]
3 Results
31 Characteristics of Temporal Evolution -e entropymethod was used to calculate the score for the high-qualitydevelopment of the marine economy and the temporal
variation of the development was investigated using the KDE(Figure 3(a)) In terms of the shape of the kernel the KDEwaveform showed a multimodal distribution -e kerneldensity distribution corresponding to the peak of the curvein 2006 was scattered the difference in scores between re-gions was relatively small -e kernel density distributioncorresponding to the peak of the curve in 2016 was relativelyconcentrated and the gap in the quality of marine eco-nomics between regions widened From 2006 to 2016 thepeaks of the kernel density curve all shifted to the right withhigher fluctuations of the score the high-quality develop-ment of the marine economy steadily improved indicatingldquoclub convergencerdquo
In order to explore the time evolution of the high-qualitydevelopment of the marine economy in China over a longerperiod of time the development was divided into threestagesndashprimary fluctuation and stable stages with 004(standard deviation set) as the cutoff point -e quantitativedivision of the stages of development against scores is moreobjective than qualitative division From 2006 to 2009 thedevelopment of Chinarsquos marine economy was in the primarystage that is it was of relatively low quality From 2010 to2014 the development of Chinarsquos marine economy was inthe fluctuation stage and was of medium quality Between2015 and 2016 the development of Chinarsquos marine economyentered a stable stage of high quality (Figure 3(b)) Chinarsquosmarine economic growth has significantly decreasedmdashthemarine economy has changed from a high-speed growthstage to a high-quality development stage with such atransformation being urgently required (Figures 3(c) and3(d))
32 Characteristics of Spatial Evolution Natural breakclassification was adopted to divide the primary inter-mediate and advanced stages of the high-quality devel-opment to explore the spatial evolution of the marineeconomy From 2006 to 2016 the coastal areas of theYangtze River Delta (YRD) continued to be the hot spots ingeneral -e coastal areas of the Pearl River Delta (PRD)and the Bohai Economic Rim (BER) showed a mix of hotand cold spots -e spatial evolution of the high-qualitydevelopment of the marine economy was basically estab-lished based on this data
In 2006 Guangdong Shanghai Zhejiang and Shan-dong Provinces were in the advanced stage of high-qualitydevelopment Tianjin Jiangsu Fujian and HainanProvinces were in the intermediate stage and GuangxiHebei and Liaoning Provinces were in the primary stageIn 2010 Guangdong Shanghai and Shandong Provinceswere in the advanced stage Tianjin Jiangsu ZhejiangFujian and Hainan Provinces were in the intermediatestage and Guangxi Hebei and Liaoning Provinces werein the primary stage In 2014 Guangdong ShanghaiZhejiang Tianjin and Shandong Provinces were in theadvanced stage Jiangsu Fujian Hainan and LiaoningProvinces were in the intermediate stage Guangxi andHebei Provinces were in the primary stage By 2016 thehigh-quality development of Chinarsquos marine economy
Complexity 5
became multipolar alternating between high mediumand low qualities showing a multipeak distribution(Figure 4)
33 Type Identification Coastal areas in China were cate-gorized into three types based on their scores for high-quality development of the marine economy using themean-standard deviation classification [31] -e mean-standard deviation classification is mainly based on thedeviation of the data itself which fits the actual situationbetter than the other classification methods types MgtAsuggests an advanced-level area A minus SDltMltA refers to anintermediate-level area andMltA minus SD indicates a primary-level area where M is the score for the high-quality de-velopment of the sample marine economy A is the averageannual score and SD is the standard deviation From 2006 to2016 the average score (A) for the high-quality developmentof Chinarsquos marine economy (M) was 035 and the standarddeviation (SD) was 013 -erefore the score range foradvanced-level areas was 035ndash100 the score range for
intermediate-level areas was 022ndash035 and the score rangefor primary-level areas was 000ndash022
34 Advanced-Level Areas Tier I areas are advanced-levelareas which include Guangdong Shanghai ShandongZhejiang and Tianjin -e following describes each area inrelation to sustainable growth in the marine economy
(1) Guangdong Province benefits from a large numberof land-based economies and its marine economy isstrongly driven by economic hinterland marketabsorption offshore finance and high technologies-e rapid expansion of Guangdongrsquos marine econ-omy forms a solid foundation for the transformationof the marine economy from high-speed to high-quality development
(2) Shanghai is the core area in the YRD region Itexhibits unique advantages for the development ofthe marine economy given its importance in na-tional strategies identity as an international city
Den
sity
00
04
08
12
16
20
24
28
32
00 01 02 03 04 05 06 07 08ndash01Score of high-quality development of marine economy
20062010
20142016
(a)
Primary stage
Fluctuation stage Stablestage
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006025
027
029
031
033
035
037
039
041
(Sco
re)
(b)
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
(Yua
n)
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006
GOPGDP
(c)
000
005
010
015
020()
025
030
035
2008 2010 2012 2014 20162006
GOPGDP
(d)
Figure 3 Time evolution and stage division of the high-quality development of marine economy (a) Nuclear density distribution (b) Timestage (c) GOP and GDP output (d) Growth rate of GOP and GDP
6 Complexity
gathering of talents in marine science and technol-ogy and superior geographical location and richmarine resources Shanghai has historically alwaysbeen in a unique position in Chinarsquos marineeconomy
(3) As a large coastal province in Eastern ChinaShandong Province has achieved high added valuesfrom several industries such as marine fishery andmarine transportation which were at the forefront ofthe country After the proposal of developing a ldquoBlue
2006 2010
2014 2016
0 0kmkm
0km
0km
South China Sea
Diaoyu Islands
800 800
800800
Primary stageIntermediate stageAdvanced stage
N
(a)
2006 2010 2014 2016
00097ndash0168001681ndash0238102382ndash0308203083ndash0378303784ndash04486
01211ndash0199101992ndash0227102772ndash0355103552ndash0433104332ndash05112
01528ndash0236102362ndash0319303194ndash0402604027ndash0485904860ndash05692
01680ndash0257702578ndash0347503476ndash0437204372ndash0526905270ndash06168
(b)
Figure 4 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 7
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
(v) Fluctuations of marine economic growth (growthrate of marine economy in the same year minus growthrate of marine economy in the previous year)growth rate of marine economy in the previousyear
(vi) Index of upgrading of marine industries outputof marine tertiary industryoutput of marine sec-ondary industry
(vii) Location quotient of marine industries (outputof marine industries in the regiongross output of
1949~1978
(i) Extensive development
period
1979~1990
(i) The initial stage of reform and
opening up the growth of marine
economy is the main part
supplemented by the development
and protection
(i) Establishing the concept of sustainable
development in the field of
marine economy
(i) Deepen the development of
both quantity and quality and promote the
common development of
marine economy and ecology
(i) lsquoNew normal of economyrsquo
(ii) Marine economy develops to high
quality on the basis of land and sea coordination
1991~2000 2001~2010 2011~Now
Figure 1 Chinarsquos marine policy stage
Time scale
External environment Internal structure Dynamic mechanism
Regional marine economy B
Regional marine economy A Active subject
Economic climate
Activity space
Development results
middotmiddotmiddotmiddotmiddot
Marine social system
Marine economic
system
Marine ecosystem
Spatial transfer
Marine policyMarine cultureGeorelationship
Globalization
Marine industryRelated employmentMarine investment
Marine ecology
Political spaceCapital power
Labor divisionMarine Technology
High-quality development of marine economy
Growth rate of marine economy
Economic climate
Activity space
Development results
middotmiddotmiddotmiddotmiddot
Materia
l cycle
Synergistic effect Benign
feed
back
Dynamic equilibrium
Macrosca
le
Middle-sca
le
Microsca
le
Figure 2 -e features of the high-quality development of marine economy
Complexity 3
Tabl
e1
Evaluatio
nsystem
ofthehigh
-qualitydevelopm
entof
marineecon
omy
Firstlevelind
exSpecificindicators
Indexinterpretatio
nWeigh
t
Com
prehensiv
estreng
thof
marineecon
omy
Gross
oceanprod
uct(G
OP)
Reflectingthematerialb
asisprovided
bythescaleexpansionof
marineecon
omyforthe
high
-qualitytransformationof
marineecon
omy
0041
Actualu
tilizationof
foreigncapital
Reflectingtheimpactof
openingup
ontheh
igh-qu
ality
transformationof
marinee
cono
my
0046
Internationalc
ontainer
traffi
cRe
flectingthecontribu
tionof
marineinfrastructure
constructio
nto
thehigh
-qualityof
marineecon
omy
0058
Econ
omic
density
ofcoastline
Reflectingtheprod
uctio
nvitalityof
marineecon
omyin
coastala
reas
0065
Marineresource
cond
ition
sRe
flectingtherelatio
nshipbetweenmarinespacebiology
mineral
resourcesandhigh
-qu
ality
developm
entof
marineecon
omy
0054
Marketo
rganizationindex
Reflectingthem
arketh
interla
ndrsquosabilityto
accept
theh
igh-qu
ality
structureprod
uctsand
services
ofthemarineecon
omy
0042
Fixedassets
investment
Reflectingtheservicestreng
thof
searelatedcapitaltomarineecon
omywith
high
quality
0043
Marineprofessio
nala
ndtechnicalp
ersonn
elRe
flectingthesupp
ortin
groleof
marinetalentsinthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0043
Financialself-sufficiency
rate
Reflectingthefi
nancialsup
portofgovernmentfi
nancetotheh
igh-qu
ality
transformationof
marineecon
omy
0010
Nationalp
olicysupp
ort
Reflectingtheguidance
ofnatio
nalp
olicyenvironm
enttothehigh
-qualitydevelopm
ento
fmarineecon
omy
0114
Fluctuationof
marineecon
omic
grow
thRe
flectingtherestrictionof
theflu
ctuatio
nrisk
forthe
high
-qualitydevelopm
ento
fmarine
econ
omy
0009
Marineindu
strial
structure
Con
tributionrateof
marinesecond
aryindu
stry
andtertiary
indu
stry
Internal
indu
strial
structurerequ
irem
ents
reflectinghigh
-qualitydevelopm
entof
marine
econ
omy
0044
Value
addedfrom
major
marineindu
stries
Reflectingtheflo
atingdegree
ofmajor
marineindu
stries
intheprocessof
high
-quality
transformationof
marineecon
omy
0039
Advancedindexof
marineindu
stry
Reflectingtherelatio
nshipbetweentheadvanced
degree
ofmarineindu
strialstructureand
thehigh
quality
ofmarineecon
omy
0038
Locatio
nentrop
yof
marineindu
stry
Reflectingtheim
pactof
thechange
ofmarineindu
strialstructureandland
linkage
onthe
high
-qualitydevelopm
entof
marineecon
omy
0061
Con
versionrateof
nonfi
sherymarineindu
strial
structure
Reflectingtheinflu
ence
oftheop
timizationspeedof
marineindu
stry
compo
sitionon
the
high
quality
ofmarineecon
omy
0063
Marinesocial
welfare
Marine-relatedem
ployment
Reflectingtheem
ploymentwelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marine
econ
omy
0062
Marinefishing
yield
Reflectingthelifewelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marineecon
omy
0065
Disp
osable
incomeof
coastalu
rban
resid
ents
Reflectingtheincom
eand
welfarebrou
ghtb
yhigh
-qualitydevelopm
entofm
arinee
cono
my
0033
Num
berof
marinescientificresearch
institu
tions
Reflectingthescientifi
cand
techno
logicalbenefitsbrou
ghtb
ytheh
igh-qu
ality
developm
ent
ofmarineecon
omy
0033
Marineecological
environm
ent
Num
berof
marinenature
reserves
Environm
entalp
rotectionforhigh
quality
developm
entof
marineecon
omy
0031
Directe
cono
mic
loss
ofmarinedisaster
Reflectingtheenvironm
entalc
osts
paid
forthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0007
Noteindexdataarec
ollected
bythec
itiesin
thec
oastalareasandtheo
riginaldataa
redimensio
nlessp
rocessedC
hinarsquosmarined
ataa
remainlyfrom
ChinarsquosMarineS
tatisticalYe
arbo
okw
hileotherresearchdata
arefrom
thegovernmentw
orkrepo
rtssocialdevelopm
entstatisticsb
ulletin
sdepartmentalpoliciesanddo
cumentsof
coastalcities-
roughthep
urchasecollectionprocessin
gandcomparisonof
marined
ata
wefoun
dthat
themarinedata
fortheresearch
areasarerelativ
elycompleteandsufficientas
wella
sscientificandob
jectivefortheperiod
2006
to2016thereforethisresearch
cyclewas
chosen
4 Complexity
all industries in the region)(output of marineindustries in the countrygross output of all in-dustries in the country)
(viii) Ratio of structural changes in marine industries(except fisheries)
1113936ni1((Ni minus G)2 times Ki)G
1113969
whereNi is the output of marine industries (except fisheries)G refers to the average annual growth rate of gross oceanproduct and K represents the proportion of the output ofmarine industries (except fisheries) in the gross oceanproduct
22 Entropy Method -e entropy method is a mathe-matical method used to judge the dispersion degree of anindex -e greater the degree of dispersion the greater theimpact of this index is on the comprehensive evaluation Itis an objective weighting method adopted to determine theweight of the relevant indicators in order to improve theaccuracy and validity of the score for the high-qualitydevelopment of the marine economy [26 27] By stan-dardizing the original data [28] and then calculating theweight of relevant indicators (which can be used to evaluatethe high-quality development of the marine economy inspatial samples) we can then calculate the total score forChina
23 Kernel Density Estimation Kernel density estimation(KDE) is used to estimate the probability density functionof a random variable in the probability theory which canreveal the evolution of the high-quality development of themarine economy in a temporal dimension [22 29] Timeseries analysis of the waveform position and kurtosis of aKDE curve can reveal the pattern of dynamic changes of thehigh-quality development of the marine economy on thetime scale For data x1 x2 x3 xn its KDE can beexpressed as
^fh(x) 1
nh1113944
n
i1K
x minus xi
h1113874 1113875 (1)
where the kernel function K is a weight function h refers tothe bandwidth and x minus xi represents the distance between xand xi Commonly used kernel functions include uniformtriangle gamma and Gaussian kernel functions Accordingto the density of the selected data Gaussian kernel functionwas adopted for this study
Gaussian 12π
radic eminus (12)t2
(2)
-e bandwidth hwas selected as h 09SN minus 08 based onSilvermanrsquos rules and S was the standard deviation of theobserved value of the random variable [30]
3 Results
31 Characteristics of Temporal Evolution -e entropymethod was used to calculate the score for the high-qualitydevelopment of the marine economy and the temporal
variation of the development was investigated using the KDE(Figure 3(a)) In terms of the shape of the kernel the KDEwaveform showed a multimodal distribution -e kerneldensity distribution corresponding to the peak of the curvein 2006 was scattered the difference in scores between re-gions was relatively small -e kernel density distributioncorresponding to the peak of the curve in 2016 was relativelyconcentrated and the gap in the quality of marine eco-nomics between regions widened From 2006 to 2016 thepeaks of the kernel density curve all shifted to the right withhigher fluctuations of the score the high-quality develop-ment of the marine economy steadily improved indicatingldquoclub convergencerdquo
In order to explore the time evolution of the high-qualitydevelopment of the marine economy in China over a longerperiod of time the development was divided into threestagesndashprimary fluctuation and stable stages with 004(standard deviation set) as the cutoff point -e quantitativedivision of the stages of development against scores is moreobjective than qualitative division From 2006 to 2009 thedevelopment of Chinarsquos marine economy was in the primarystage that is it was of relatively low quality From 2010 to2014 the development of Chinarsquos marine economy was inthe fluctuation stage and was of medium quality Between2015 and 2016 the development of Chinarsquos marine economyentered a stable stage of high quality (Figure 3(b)) Chinarsquosmarine economic growth has significantly decreasedmdashthemarine economy has changed from a high-speed growthstage to a high-quality development stage with such atransformation being urgently required (Figures 3(c) and3(d))
32 Characteristics of Spatial Evolution Natural breakclassification was adopted to divide the primary inter-mediate and advanced stages of the high-quality devel-opment to explore the spatial evolution of the marineeconomy From 2006 to 2016 the coastal areas of theYangtze River Delta (YRD) continued to be the hot spots ingeneral -e coastal areas of the Pearl River Delta (PRD)and the Bohai Economic Rim (BER) showed a mix of hotand cold spots -e spatial evolution of the high-qualitydevelopment of the marine economy was basically estab-lished based on this data
In 2006 Guangdong Shanghai Zhejiang and Shan-dong Provinces were in the advanced stage of high-qualitydevelopment Tianjin Jiangsu Fujian and HainanProvinces were in the intermediate stage and GuangxiHebei and Liaoning Provinces were in the primary stageIn 2010 Guangdong Shanghai and Shandong Provinceswere in the advanced stage Tianjin Jiangsu ZhejiangFujian and Hainan Provinces were in the intermediatestage and Guangxi Hebei and Liaoning Provinces werein the primary stage In 2014 Guangdong ShanghaiZhejiang Tianjin and Shandong Provinces were in theadvanced stage Jiangsu Fujian Hainan and LiaoningProvinces were in the intermediate stage Guangxi andHebei Provinces were in the primary stage By 2016 thehigh-quality development of Chinarsquos marine economy
Complexity 5
became multipolar alternating between high mediumand low qualities showing a multipeak distribution(Figure 4)
33 Type Identification Coastal areas in China were cate-gorized into three types based on their scores for high-quality development of the marine economy using themean-standard deviation classification [31] -e mean-standard deviation classification is mainly based on thedeviation of the data itself which fits the actual situationbetter than the other classification methods types MgtAsuggests an advanced-level area A minus SDltMltA refers to anintermediate-level area andMltA minus SD indicates a primary-level area where M is the score for the high-quality de-velopment of the sample marine economy A is the averageannual score and SD is the standard deviation From 2006 to2016 the average score (A) for the high-quality developmentof Chinarsquos marine economy (M) was 035 and the standarddeviation (SD) was 013 -erefore the score range foradvanced-level areas was 035ndash100 the score range for
intermediate-level areas was 022ndash035 and the score rangefor primary-level areas was 000ndash022
34 Advanced-Level Areas Tier I areas are advanced-levelareas which include Guangdong Shanghai ShandongZhejiang and Tianjin -e following describes each area inrelation to sustainable growth in the marine economy
(1) Guangdong Province benefits from a large numberof land-based economies and its marine economy isstrongly driven by economic hinterland marketabsorption offshore finance and high technologies-e rapid expansion of Guangdongrsquos marine econ-omy forms a solid foundation for the transformationof the marine economy from high-speed to high-quality development
(2) Shanghai is the core area in the YRD region Itexhibits unique advantages for the development ofthe marine economy given its importance in na-tional strategies identity as an international city
Den
sity
00
04
08
12
16
20
24
28
32
00 01 02 03 04 05 06 07 08ndash01Score of high-quality development of marine economy
20062010
20142016
(a)
Primary stage
Fluctuation stage Stablestage
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006025
027
029
031
033
035
037
039
041
(Sco
re)
(b)
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
(Yua
n)
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006
GOPGDP
(c)
000
005
010
015
020()
025
030
035
2008 2010 2012 2014 20162006
GOPGDP
(d)
Figure 3 Time evolution and stage division of the high-quality development of marine economy (a) Nuclear density distribution (b) Timestage (c) GOP and GDP output (d) Growth rate of GOP and GDP
6 Complexity
gathering of talents in marine science and technol-ogy and superior geographical location and richmarine resources Shanghai has historically alwaysbeen in a unique position in Chinarsquos marineeconomy
(3) As a large coastal province in Eastern ChinaShandong Province has achieved high added valuesfrom several industries such as marine fishery andmarine transportation which were at the forefront ofthe country After the proposal of developing a ldquoBlue
2006 2010
2014 2016
0 0kmkm
0km
0km
South China Sea
Diaoyu Islands
800 800
800800
Primary stageIntermediate stageAdvanced stage
N
(a)
2006 2010 2014 2016
00097ndash0168001681ndash0238102382ndash0308203083ndash0378303784ndash04486
01211ndash0199101992ndash0227102772ndash0355103552ndash0433104332ndash05112
01528ndash0236102362ndash0319303194ndash0402604027ndash0485904860ndash05692
01680ndash0257702578ndash0347503476ndash0437204372ndash0526905270ndash06168
(b)
Figure 4 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 7
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
Tabl
e1
Evaluatio
nsystem
ofthehigh
-qualitydevelopm
entof
marineecon
omy
Firstlevelind
exSpecificindicators
Indexinterpretatio
nWeigh
t
Com
prehensiv
estreng
thof
marineecon
omy
Gross
oceanprod
uct(G
OP)
Reflectingthematerialb
asisprovided
bythescaleexpansionof
marineecon
omyforthe
high
-qualitytransformationof
marineecon
omy
0041
Actualu
tilizationof
foreigncapital
Reflectingtheimpactof
openingup
ontheh
igh-qu
ality
transformationof
marinee
cono
my
0046
Internationalc
ontainer
traffi
cRe
flectingthecontribu
tionof
marineinfrastructure
constructio
nto
thehigh
-qualityof
marineecon
omy
0058
Econ
omic
density
ofcoastline
Reflectingtheprod
uctio
nvitalityof
marineecon
omyin
coastala
reas
0065
Marineresource
cond
ition
sRe
flectingtherelatio
nshipbetweenmarinespacebiology
mineral
resourcesandhigh
-qu
ality
developm
entof
marineecon
omy
0054
Marketo
rganizationindex
Reflectingthem
arketh
interla
ndrsquosabilityto
accept
theh
igh-qu
ality
structureprod
uctsand
services
ofthemarineecon
omy
0042
Fixedassets
investment
Reflectingtheservicestreng
thof
searelatedcapitaltomarineecon
omywith
high
quality
0043
Marineprofessio
nala
ndtechnicalp
ersonn
elRe
flectingthesupp
ortin
groleof
marinetalentsinthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0043
Financialself-sufficiency
rate
Reflectingthefi
nancialsup
portofgovernmentfi
nancetotheh
igh-qu
ality
transformationof
marineecon
omy
0010
Nationalp
olicysupp
ort
Reflectingtheguidance
ofnatio
nalp
olicyenvironm
enttothehigh
-qualitydevelopm
ento
fmarineecon
omy
0114
Fluctuationof
marineecon
omic
grow
thRe
flectingtherestrictionof
theflu
ctuatio
nrisk
forthe
high
-qualitydevelopm
ento
fmarine
econ
omy
0009
Marineindu
strial
structure
Con
tributionrateof
marinesecond
aryindu
stry
andtertiary
indu
stry
Internal
indu
strial
structurerequ
irem
ents
reflectinghigh
-qualitydevelopm
entof
marine
econ
omy
0044
Value
addedfrom
major
marineindu
stries
Reflectingtheflo
atingdegree
ofmajor
marineindu
stries
intheprocessof
high
-quality
transformationof
marineecon
omy
0039
Advancedindexof
marineindu
stry
Reflectingtherelatio
nshipbetweentheadvanced
degree
ofmarineindu
strialstructureand
thehigh
quality
ofmarineecon
omy
0038
Locatio
nentrop
yof
marineindu
stry
Reflectingtheim
pactof
thechange
ofmarineindu
strialstructureandland
linkage
onthe
high
-qualitydevelopm
entof
marineecon
omy
0061
Con
versionrateof
nonfi
sherymarineindu
strial
structure
Reflectingtheinflu
ence
oftheop
timizationspeedof
marineindu
stry
compo
sitionon
the
high
quality
ofmarineecon
omy
0063
Marinesocial
welfare
Marine-relatedem
ployment
Reflectingtheem
ploymentwelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marine
econ
omy
0062
Marinefishing
yield
Reflectingthelifewelfare
brou
ghtb
ythehigh
-qualitydevelopm
entof
marineecon
omy
0065
Disp
osable
incomeof
coastalu
rban
resid
ents
Reflectingtheincom
eand
welfarebrou
ghtb
yhigh
-qualitydevelopm
entofm
arinee
cono
my
0033
Num
berof
marinescientificresearch
institu
tions
Reflectingthescientifi
cand
techno
logicalbenefitsbrou
ghtb
ytheh
igh-qu
ality
developm
ent
ofmarineecon
omy
0033
Marineecological
environm
ent
Num
berof
marinenature
reserves
Environm
entalp
rotectionforhigh
quality
developm
entof
marineecon
omy
0031
Directe
cono
mic
loss
ofmarinedisaster
Reflectingtheenvironm
entalc
osts
paid
forthehigh
-qualitydevelopm
ento
fmarine
econ
omy
0007
Noteindexdataarec
ollected
bythec
itiesin
thec
oastalareasandtheo
riginaldataa
redimensio
nlessp
rocessedC
hinarsquosmarined
ataa
remainlyfrom
ChinarsquosMarineS
tatisticalYe
arbo
okw
hileotherresearchdata
arefrom
thegovernmentw
orkrepo
rtssocialdevelopm
entstatisticsb
ulletin
sdepartmentalpoliciesanddo
cumentsof
coastalcities-
roughthep
urchasecollectionprocessin
gandcomparisonof
marined
ata
wefoun
dthat
themarinedata
fortheresearch
areasarerelativ
elycompleteandsufficientas
wella
sscientificandob
jectivefortheperiod
2006
to2016thereforethisresearch
cyclewas
chosen
4 Complexity
all industries in the region)(output of marineindustries in the countrygross output of all in-dustries in the country)
(viii) Ratio of structural changes in marine industries(except fisheries)
1113936ni1((Ni minus G)2 times Ki)G
1113969
whereNi is the output of marine industries (except fisheries)G refers to the average annual growth rate of gross oceanproduct and K represents the proportion of the output ofmarine industries (except fisheries) in the gross oceanproduct
22 Entropy Method -e entropy method is a mathe-matical method used to judge the dispersion degree of anindex -e greater the degree of dispersion the greater theimpact of this index is on the comprehensive evaluation Itis an objective weighting method adopted to determine theweight of the relevant indicators in order to improve theaccuracy and validity of the score for the high-qualitydevelopment of the marine economy [26 27] By stan-dardizing the original data [28] and then calculating theweight of relevant indicators (which can be used to evaluatethe high-quality development of the marine economy inspatial samples) we can then calculate the total score forChina
23 Kernel Density Estimation Kernel density estimation(KDE) is used to estimate the probability density functionof a random variable in the probability theory which canreveal the evolution of the high-quality development of themarine economy in a temporal dimension [22 29] Timeseries analysis of the waveform position and kurtosis of aKDE curve can reveal the pattern of dynamic changes of thehigh-quality development of the marine economy on thetime scale For data x1 x2 x3 xn its KDE can beexpressed as
^fh(x) 1
nh1113944
n
i1K
x minus xi
h1113874 1113875 (1)
where the kernel function K is a weight function h refers tothe bandwidth and x minus xi represents the distance between xand xi Commonly used kernel functions include uniformtriangle gamma and Gaussian kernel functions Accordingto the density of the selected data Gaussian kernel functionwas adopted for this study
Gaussian 12π
radic eminus (12)t2
(2)
-e bandwidth hwas selected as h 09SN minus 08 based onSilvermanrsquos rules and S was the standard deviation of theobserved value of the random variable [30]
3 Results
31 Characteristics of Temporal Evolution -e entropymethod was used to calculate the score for the high-qualitydevelopment of the marine economy and the temporal
variation of the development was investigated using the KDE(Figure 3(a)) In terms of the shape of the kernel the KDEwaveform showed a multimodal distribution -e kerneldensity distribution corresponding to the peak of the curvein 2006 was scattered the difference in scores between re-gions was relatively small -e kernel density distributioncorresponding to the peak of the curve in 2016 was relativelyconcentrated and the gap in the quality of marine eco-nomics between regions widened From 2006 to 2016 thepeaks of the kernel density curve all shifted to the right withhigher fluctuations of the score the high-quality develop-ment of the marine economy steadily improved indicatingldquoclub convergencerdquo
In order to explore the time evolution of the high-qualitydevelopment of the marine economy in China over a longerperiod of time the development was divided into threestagesndashprimary fluctuation and stable stages with 004(standard deviation set) as the cutoff point -e quantitativedivision of the stages of development against scores is moreobjective than qualitative division From 2006 to 2009 thedevelopment of Chinarsquos marine economy was in the primarystage that is it was of relatively low quality From 2010 to2014 the development of Chinarsquos marine economy was inthe fluctuation stage and was of medium quality Between2015 and 2016 the development of Chinarsquos marine economyentered a stable stage of high quality (Figure 3(b)) Chinarsquosmarine economic growth has significantly decreasedmdashthemarine economy has changed from a high-speed growthstage to a high-quality development stage with such atransformation being urgently required (Figures 3(c) and3(d))
32 Characteristics of Spatial Evolution Natural breakclassification was adopted to divide the primary inter-mediate and advanced stages of the high-quality devel-opment to explore the spatial evolution of the marineeconomy From 2006 to 2016 the coastal areas of theYangtze River Delta (YRD) continued to be the hot spots ingeneral -e coastal areas of the Pearl River Delta (PRD)and the Bohai Economic Rim (BER) showed a mix of hotand cold spots -e spatial evolution of the high-qualitydevelopment of the marine economy was basically estab-lished based on this data
In 2006 Guangdong Shanghai Zhejiang and Shan-dong Provinces were in the advanced stage of high-qualitydevelopment Tianjin Jiangsu Fujian and HainanProvinces were in the intermediate stage and GuangxiHebei and Liaoning Provinces were in the primary stageIn 2010 Guangdong Shanghai and Shandong Provinceswere in the advanced stage Tianjin Jiangsu ZhejiangFujian and Hainan Provinces were in the intermediatestage and Guangxi Hebei and Liaoning Provinces werein the primary stage In 2014 Guangdong ShanghaiZhejiang Tianjin and Shandong Provinces were in theadvanced stage Jiangsu Fujian Hainan and LiaoningProvinces were in the intermediate stage Guangxi andHebei Provinces were in the primary stage By 2016 thehigh-quality development of Chinarsquos marine economy
Complexity 5
became multipolar alternating between high mediumand low qualities showing a multipeak distribution(Figure 4)
33 Type Identification Coastal areas in China were cate-gorized into three types based on their scores for high-quality development of the marine economy using themean-standard deviation classification [31] -e mean-standard deviation classification is mainly based on thedeviation of the data itself which fits the actual situationbetter than the other classification methods types MgtAsuggests an advanced-level area A minus SDltMltA refers to anintermediate-level area andMltA minus SD indicates a primary-level area where M is the score for the high-quality de-velopment of the sample marine economy A is the averageannual score and SD is the standard deviation From 2006 to2016 the average score (A) for the high-quality developmentof Chinarsquos marine economy (M) was 035 and the standarddeviation (SD) was 013 -erefore the score range foradvanced-level areas was 035ndash100 the score range for
intermediate-level areas was 022ndash035 and the score rangefor primary-level areas was 000ndash022
34 Advanced-Level Areas Tier I areas are advanced-levelareas which include Guangdong Shanghai ShandongZhejiang and Tianjin -e following describes each area inrelation to sustainable growth in the marine economy
(1) Guangdong Province benefits from a large numberof land-based economies and its marine economy isstrongly driven by economic hinterland marketabsorption offshore finance and high technologies-e rapid expansion of Guangdongrsquos marine econ-omy forms a solid foundation for the transformationof the marine economy from high-speed to high-quality development
(2) Shanghai is the core area in the YRD region Itexhibits unique advantages for the development ofthe marine economy given its importance in na-tional strategies identity as an international city
Den
sity
00
04
08
12
16
20
24
28
32
00 01 02 03 04 05 06 07 08ndash01Score of high-quality development of marine economy
20062010
20142016
(a)
Primary stage
Fluctuation stage Stablestage
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006025
027
029
031
033
035
037
039
041
(Sco
re)
(b)
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
(Yua
n)
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006
GOPGDP
(c)
000
005
010
015
020()
025
030
035
2008 2010 2012 2014 20162006
GOPGDP
(d)
Figure 3 Time evolution and stage division of the high-quality development of marine economy (a) Nuclear density distribution (b) Timestage (c) GOP and GDP output (d) Growth rate of GOP and GDP
6 Complexity
gathering of talents in marine science and technol-ogy and superior geographical location and richmarine resources Shanghai has historically alwaysbeen in a unique position in Chinarsquos marineeconomy
(3) As a large coastal province in Eastern ChinaShandong Province has achieved high added valuesfrom several industries such as marine fishery andmarine transportation which were at the forefront ofthe country After the proposal of developing a ldquoBlue
2006 2010
2014 2016
0 0kmkm
0km
0km
South China Sea
Diaoyu Islands
800 800
800800
Primary stageIntermediate stageAdvanced stage
N
(a)
2006 2010 2014 2016
00097ndash0168001681ndash0238102382ndash0308203083ndash0378303784ndash04486
01211ndash0199101992ndash0227102772ndash0355103552ndash0433104332ndash05112
01528ndash0236102362ndash0319303194ndash0402604027ndash0485904860ndash05692
01680ndash0257702578ndash0347503476ndash0437204372ndash0526905270ndash06168
(b)
Figure 4 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 7
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
all industries in the region)(output of marineindustries in the countrygross output of all in-dustries in the country)
(viii) Ratio of structural changes in marine industries(except fisheries)
1113936ni1((Ni minus G)2 times Ki)G
1113969
whereNi is the output of marine industries (except fisheries)G refers to the average annual growth rate of gross oceanproduct and K represents the proportion of the output ofmarine industries (except fisheries) in the gross oceanproduct
22 Entropy Method -e entropy method is a mathe-matical method used to judge the dispersion degree of anindex -e greater the degree of dispersion the greater theimpact of this index is on the comprehensive evaluation Itis an objective weighting method adopted to determine theweight of the relevant indicators in order to improve theaccuracy and validity of the score for the high-qualitydevelopment of the marine economy [26 27] By stan-dardizing the original data [28] and then calculating theweight of relevant indicators (which can be used to evaluatethe high-quality development of the marine economy inspatial samples) we can then calculate the total score forChina
23 Kernel Density Estimation Kernel density estimation(KDE) is used to estimate the probability density functionof a random variable in the probability theory which canreveal the evolution of the high-quality development of themarine economy in a temporal dimension [22 29] Timeseries analysis of the waveform position and kurtosis of aKDE curve can reveal the pattern of dynamic changes of thehigh-quality development of the marine economy on thetime scale For data x1 x2 x3 xn its KDE can beexpressed as
^fh(x) 1
nh1113944
n
i1K
x minus xi
h1113874 1113875 (1)
where the kernel function K is a weight function h refers tothe bandwidth and x minus xi represents the distance between xand xi Commonly used kernel functions include uniformtriangle gamma and Gaussian kernel functions Accordingto the density of the selected data Gaussian kernel functionwas adopted for this study
Gaussian 12π
radic eminus (12)t2
(2)
-e bandwidth hwas selected as h 09SN minus 08 based onSilvermanrsquos rules and S was the standard deviation of theobserved value of the random variable [30]
3 Results
31 Characteristics of Temporal Evolution -e entropymethod was used to calculate the score for the high-qualitydevelopment of the marine economy and the temporal
variation of the development was investigated using the KDE(Figure 3(a)) In terms of the shape of the kernel the KDEwaveform showed a multimodal distribution -e kerneldensity distribution corresponding to the peak of the curvein 2006 was scattered the difference in scores between re-gions was relatively small -e kernel density distributioncorresponding to the peak of the curve in 2016 was relativelyconcentrated and the gap in the quality of marine eco-nomics between regions widened From 2006 to 2016 thepeaks of the kernel density curve all shifted to the right withhigher fluctuations of the score the high-quality develop-ment of the marine economy steadily improved indicatingldquoclub convergencerdquo
In order to explore the time evolution of the high-qualitydevelopment of the marine economy in China over a longerperiod of time the development was divided into threestagesndashprimary fluctuation and stable stages with 004(standard deviation set) as the cutoff point -e quantitativedivision of the stages of development against scores is moreobjective than qualitative division From 2006 to 2009 thedevelopment of Chinarsquos marine economy was in the primarystage that is it was of relatively low quality From 2010 to2014 the development of Chinarsquos marine economy was inthe fluctuation stage and was of medium quality Between2015 and 2016 the development of Chinarsquos marine economyentered a stable stage of high quality (Figure 3(b)) Chinarsquosmarine economic growth has significantly decreasedmdashthemarine economy has changed from a high-speed growthstage to a high-quality development stage with such atransformation being urgently required (Figures 3(c) and3(d))
32 Characteristics of Spatial Evolution Natural breakclassification was adopted to divide the primary inter-mediate and advanced stages of the high-quality devel-opment to explore the spatial evolution of the marineeconomy From 2006 to 2016 the coastal areas of theYangtze River Delta (YRD) continued to be the hot spots ingeneral -e coastal areas of the Pearl River Delta (PRD)and the Bohai Economic Rim (BER) showed a mix of hotand cold spots -e spatial evolution of the high-qualitydevelopment of the marine economy was basically estab-lished based on this data
In 2006 Guangdong Shanghai Zhejiang and Shan-dong Provinces were in the advanced stage of high-qualitydevelopment Tianjin Jiangsu Fujian and HainanProvinces were in the intermediate stage and GuangxiHebei and Liaoning Provinces were in the primary stageIn 2010 Guangdong Shanghai and Shandong Provinceswere in the advanced stage Tianjin Jiangsu ZhejiangFujian and Hainan Provinces were in the intermediatestage and Guangxi Hebei and Liaoning Provinces werein the primary stage In 2014 Guangdong ShanghaiZhejiang Tianjin and Shandong Provinces were in theadvanced stage Jiangsu Fujian Hainan and LiaoningProvinces were in the intermediate stage Guangxi andHebei Provinces were in the primary stage By 2016 thehigh-quality development of Chinarsquos marine economy
Complexity 5
became multipolar alternating between high mediumand low qualities showing a multipeak distribution(Figure 4)
33 Type Identification Coastal areas in China were cate-gorized into three types based on their scores for high-quality development of the marine economy using themean-standard deviation classification [31] -e mean-standard deviation classification is mainly based on thedeviation of the data itself which fits the actual situationbetter than the other classification methods types MgtAsuggests an advanced-level area A minus SDltMltA refers to anintermediate-level area andMltA minus SD indicates a primary-level area where M is the score for the high-quality de-velopment of the sample marine economy A is the averageannual score and SD is the standard deviation From 2006 to2016 the average score (A) for the high-quality developmentof Chinarsquos marine economy (M) was 035 and the standarddeviation (SD) was 013 -erefore the score range foradvanced-level areas was 035ndash100 the score range for
intermediate-level areas was 022ndash035 and the score rangefor primary-level areas was 000ndash022
34 Advanced-Level Areas Tier I areas are advanced-levelareas which include Guangdong Shanghai ShandongZhejiang and Tianjin -e following describes each area inrelation to sustainable growth in the marine economy
(1) Guangdong Province benefits from a large numberof land-based economies and its marine economy isstrongly driven by economic hinterland marketabsorption offshore finance and high technologies-e rapid expansion of Guangdongrsquos marine econ-omy forms a solid foundation for the transformationof the marine economy from high-speed to high-quality development
(2) Shanghai is the core area in the YRD region Itexhibits unique advantages for the development ofthe marine economy given its importance in na-tional strategies identity as an international city
Den
sity
00
04
08
12
16
20
24
28
32
00 01 02 03 04 05 06 07 08ndash01Score of high-quality development of marine economy
20062010
20142016
(a)
Primary stage
Fluctuation stage Stablestage
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006025
027
029
031
033
035
037
039
041
(Sco
re)
(b)
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
(Yua
n)
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006
GOPGDP
(c)
000
005
010
015
020()
025
030
035
2008 2010 2012 2014 20162006
GOPGDP
(d)
Figure 3 Time evolution and stage division of the high-quality development of marine economy (a) Nuclear density distribution (b) Timestage (c) GOP and GDP output (d) Growth rate of GOP and GDP
6 Complexity
gathering of talents in marine science and technol-ogy and superior geographical location and richmarine resources Shanghai has historically alwaysbeen in a unique position in Chinarsquos marineeconomy
(3) As a large coastal province in Eastern ChinaShandong Province has achieved high added valuesfrom several industries such as marine fishery andmarine transportation which were at the forefront ofthe country After the proposal of developing a ldquoBlue
2006 2010
2014 2016
0 0kmkm
0km
0km
South China Sea
Diaoyu Islands
800 800
800800
Primary stageIntermediate stageAdvanced stage
N
(a)
2006 2010 2014 2016
00097ndash0168001681ndash0238102382ndash0308203083ndash0378303784ndash04486
01211ndash0199101992ndash0227102772ndash0355103552ndash0433104332ndash05112
01528ndash0236102362ndash0319303194ndash0402604027ndash0485904860ndash05692
01680ndash0257702578ndash0347503476ndash0437204372ndash0526905270ndash06168
(b)
Figure 4 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 7
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
became multipolar alternating between high mediumand low qualities showing a multipeak distribution(Figure 4)
33 Type Identification Coastal areas in China were cate-gorized into three types based on their scores for high-quality development of the marine economy using themean-standard deviation classification [31] -e mean-standard deviation classification is mainly based on thedeviation of the data itself which fits the actual situationbetter than the other classification methods types MgtAsuggests an advanced-level area A minus SDltMltA refers to anintermediate-level area andMltA minus SD indicates a primary-level area where M is the score for the high-quality de-velopment of the sample marine economy A is the averageannual score and SD is the standard deviation From 2006 to2016 the average score (A) for the high-quality developmentof Chinarsquos marine economy (M) was 035 and the standarddeviation (SD) was 013 -erefore the score range foradvanced-level areas was 035ndash100 the score range for
intermediate-level areas was 022ndash035 and the score rangefor primary-level areas was 000ndash022
34 Advanced-Level Areas Tier I areas are advanced-levelareas which include Guangdong Shanghai ShandongZhejiang and Tianjin -e following describes each area inrelation to sustainable growth in the marine economy
(1) Guangdong Province benefits from a large numberof land-based economies and its marine economy isstrongly driven by economic hinterland marketabsorption offshore finance and high technologies-e rapid expansion of Guangdongrsquos marine econ-omy forms a solid foundation for the transformationof the marine economy from high-speed to high-quality development
(2) Shanghai is the core area in the YRD region Itexhibits unique advantages for the development ofthe marine economy given its importance in na-tional strategies identity as an international city
Den
sity
00
04
08
12
16
20
24
28
32
00 01 02 03 04 05 06 07 08ndash01Score of high-quality development of marine economy
20062010
20142016
(a)
Primary stage
Fluctuation stage Stablestage
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006025
027
029
031
033
035
037
039
041
(Sco
re)
(b)
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
(Yua
n)
2007 2008 2009 2010 2011 2012 2013 2014 2015 20162006
GOPGDP
(c)
000
005
010
015
020()
025
030
035
2008 2010 2012 2014 20162006
GOPGDP
(d)
Figure 3 Time evolution and stage division of the high-quality development of marine economy (a) Nuclear density distribution (b) Timestage (c) GOP and GDP output (d) Growth rate of GOP and GDP
6 Complexity
gathering of talents in marine science and technol-ogy and superior geographical location and richmarine resources Shanghai has historically alwaysbeen in a unique position in Chinarsquos marineeconomy
(3) As a large coastal province in Eastern ChinaShandong Province has achieved high added valuesfrom several industries such as marine fishery andmarine transportation which were at the forefront ofthe country After the proposal of developing a ldquoBlue
2006 2010
2014 2016
0 0kmkm
0km
0km
South China Sea
Diaoyu Islands
800 800
800800
Primary stageIntermediate stageAdvanced stage
N
(a)
2006 2010 2014 2016
00097ndash0168001681ndash0238102382ndash0308203083ndash0378303784ndash04486
01211ndash0199101992ndash0227102772ndash0355103552ndash0433104332ndash05112
01528ndash0236102362ndash0319303194ndash0402604027ndash0485904860ndash05692
01680ndash0257702578ndash0347503476ndash0437204372ndash0526905270ndash06168
(b)
Figure 4 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 7
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
gathering of talents in marine science and technol-ogy and superior geographical location and richmarine resources Shanghai has historically alwaysbeen in a unique position in Chinarsquos marineeconomy
(3) As a large coastal province in Eastern ChinaShandong Province has achieved high added valuesfrom several industries such as marine fishery andmarine transportation which were at the forefront ofthe country After the proposal of developing a ldquoBlue
2006 2010
2014 2016
0 0kmkm
0km
0km
South China Sea
Diaoyu Islands
800 800
800800
Primary stageIntermediate stageAdvanced stage
N
(a)
2006 2010 2014 2016
00097ndash0168001681ndash0238102382ndash0308203083ndash0378303784ndash04486
01211ndash0199101992ndash0227102772ndash0355103552ndash0433104332ndash05112
01528ndash0236102362ndash0319303194ndash0402604027ndash0485904860ndash05692
01680ndash0257702578ndash0347503476ndash0437204372ndash0526905270ndash06168
(b)
Figure 4 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 7
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
Economic Zonerdquo (BEZ) on the Shandong Peninsulaa plan was quickly initiated -e development of themarine economy in Shandong started relatively latebut its scale has been increasing steadily It is likelythat Shandong may catch up and take a leadingposition in the marine economy with GuangdongProvince
(4) In 2011 the State Council approved the demon-stration zone for marine economic development inZhejiang Province Since then the marine economyhas started to play an increasingly important role inZhejiangrsquos national economic development In 2015the national port integration initiative was proposedand the Ningbo Port and Zhoushan Port in Zhejiangwere integrated in 2016 Following the port inte-gration the pace of high-quality development ofZhejiangrsquos marine economy has been accelerating
(5) Tianjin Province is a typical coastal city in the BERregion and marine exploitation planning and de-velopment are key to its development Its geo-graphical advantages provide a good basis for thedevelopment of the marine economy the provincehas supportive polices and its advantages in scienceand technology enable it to promote the transfor-mation of the marine economy In addition theldquoTianjin modelrdquo has offered other coastal cities in theBER region a valuable reference for the developmentof the marine economy
35 Intermediate-Level Areas Tier II areas are intermediate-level areas including Fujian Jiangsu Hainan and Liaoning-e following describes each area in relation to sustainablegrowth in the marine economy
(1) Fujian Province has obvious advantages in five majormarine industries marine fishery marine trans-portation marine tourism marine engineering andmarine ships However the improvement of itsmarine economic competitiveness has been re-stricted in the short term as it has insufficient timeand space to resolve excess capacity issues upgradeand optimize industrial structures and achieve in-novation-driven development
(2) Jiangsu Province has rich marine resources a goodmaterial basis for the development of the marineeconomy In addition it has achieved remarkableprogress in its marine technological innovation andtransformation However the development of themarine economy in Jiangsu has resulted in minorissues a low level of development and great eco-logical pressure Considering the proportion of theocean in some of the strong marine provinces thescale of Jiangsursquos marine economy is relatively smallto the overall promotion of the high-quality devel-opment of the marine economy in the province
(3) -e Xisha Nansha and Zhongsha islands of HainanProvince are actually traditional military controlareas and the front line of coastal defense Except for
coastal tourism other marine industries in Hainanneed to be improved (as the research data were onlyup to 2016 there is a certain time lag in the effec-tiveness of the promotion of the Hainan pilot free-trade zone which was excluded from this study)
(4) Since the proposal for the construction of ldquoLiaoningat seardquo and the continuous growth of the develop-ment and exploitation of the ocean the landformsalong the coast of Liaoning continue to be destroyedincreasing the pressure on the marine ecologicalenvironment It is an important challenge forLiaoning to scientifically adjust the layout of themarine industry in the coastal areas of the provinceand change the pattern of marine economic devel-opment in a timely manner in order to achieve thehigh-quality development of the marine economy
36 Primary-Level Areas Tier III areas are primary-levelareas which include Hebei and Guangxi -e followingdescribes each area in relation to sustainable growth in themarine economy
(1) 90 of ocean-related enterprises in Hebei Provinceare located in Qin-Tang-Cang zones As the sea hasbeen separated from the land for a long time theintegration of land and sea has not been consideredin Hebei Moreover it provides low economicbenefits from the comprehensive utilization of ma-rine resources so the overall strength of Hebeirsquosmarine economy is relatively inferior in the BERregion
(2) Guangxi is a coastal area that only developed recentlyand has been facing issues expected of a small marineeconomy such as weak maritime industrial struc-tures and many challenges in economic transfor-mation -us it has a weak material basis forcontributing to the high-quality development ofChinarsquos marine economy
4 Discussions
With the growing understanding of the concept of sus-tainable development it has been a consensus among coastalcountries around the world to develop the marine economyin the context of globalization and a shared future [4 5]From a perspective of sustainability seeking external en-vironmental strategies and internal dynamic mechanisms tooptimize the development model of the marine economywill be the key areas of science research and the developmentof the marine economy [6 9] As policies on the develop-ment and utilization of sea areas have gradually changed theoperation mode and structural characteristics of micro-marine economies have begun to change as well (Figure 5)Coastal areas are typical areas of rapid urbanization anddevelopment of the marine economy -is study has takenthe coastal areas in China as spatial samples to study thehigh-quality development of the marine economy and metcurrent political requirements and practical needs -e
8 Complexity
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
discussion on the pattern of the high-quality development ofmarine economy can provide a reference to other coastalcountries in the world
-e pattern of the high-quality development of themarine economy is a key issue that needs to be consideredfor the development of coastal areas it poses as an importantpath for coastal countries to actively explore to help themachieve sustainable growth -e global economy is under-going a cyclical slowdown -erefore the risks of suddenunusual and irregular fluctuations continue to intensify theuncertainty of economic development meaning that tra-ditional theories of economic growth would not be appli-cable to the sustainable growth of the marine economy-anks to the promotion of several international scienceprograms the establishment of sustainable science has laidthe theoretical foundation for solving marine-relatedproblems [32] It has gradually become the core objective ofmarine economic development to transform shifting fromthe quantity of sustainable growth to the quality of sus-tainable growth and seek growth that has low consumptionless pollution and high output
From the perspective of sustainable development thetheoretical framework and evaluation system of the high-quality development of the marine economy have not yetbeen established and empirical analysis in this area stillneeds to be improved -e study has combined analysis oftypical cases and we study the pattern of high-quality de-velopment using coastal areas in China as examples in-creasing the reliability of research results -e case study ofthis paper is different from the case analysis of the optimaleconomic management of the local coastal zone in a singlearea [22 23] or the qualitative division of stages of marineeconomic development -e study has adopted a combi-nation of the index method and the threshold model toquantitatively compare the marine economy in variouscoastal areas regarding their stage of high-quality devel-opment state of operation and spatial-temporal evolutionof development -is method can accurately identify thedevelopment orientation of the marine economy in coastalcities In addition it is different from the economic high-quality development model [33] -is research intends to
propose solutions to resolve the bottlenecks of marineeconomic development and marine ecological environmentin the coastal areas and we attempt to construct models forsustainable development in terms of ecological benefit andeconomic benefits
-e study is significant in alleviating the pressure ofhigh-density agglomeration high-intensity developmenthigh-level pollution and high-risk ecological environmentdue to the rapid growth of the marine economy in coastalcities It also seeks the ldquoeconomic-ecologicalrdquo interaction-coupling model of sustainable development [34]
-e limitations of this study are as follows Based on theavailability and representativeness of the national oceano-graphic data the research team only collected screened andprocessed relevant data in the period between 2006 and 2016and then quantitatively analyzed the state of the high-qualitydevelopment of the marine economy in Chinarsquos coastalareas Coastal agglomerated areas were mainly taken as coreresearch objects and the development of the upstream anddownstream industrial chains related to marine industriesinland was not considered which may have had a certainimpact on the research results
5 Conclusions
-is study has systematically analyzed the features of thecross-scale transfer of the high-quality development of themarine economy has constructed a model for the evolutionof development in time and space and has integratedmultiple agents elements and systems Chinarsquos coastal areasin the period between 2006 and 2016 were taken as spatialsamples to assess its spatial-temporal evolution and give typeclassifications -e results of the research have found that
(1) -e high-quality development of Chinarsquos marineeconomy shows remarkable policy-oriented char-acteristics -e issue of coastal policies has evolvedover time from a brief and scattered pattern to asystematic and intensive pattern while the focus ofthe policies has shifted from the growth rate to thequality of marine economic development
Aggregation of micromarine
economiesMaritime sector
Coastal city node appears Subsenior coastal area
Forming coastal city groups
Other coastal city groups
Other coastal city groups
Bohai Rim RegionYangtze River Delta
Pearl River Delta
Spatial agglomeration marine elements industrial upgrading and prior development
Spatial spillover technological progress industrial transfer and driving role
Spatial agglomeration
Administrative jurisdiction
Chinarsquos marine economyldquoNortheast revitalizationrdquo
ldquoCentral Riserdquoldquothe Belt and Roadrdquo
Cross regional linkage
Figure 5 Spatial features of the high-quality development of Chinarsquos marine economy
Complexity 9
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
(2) In terms of time evolution differences in the high-quality development of Chinarsquos marine economyincreased with time but the high-quality devel-opment steadily improved and showed club con-vergence indicating a development process fromthe primary stage to the fluctuation stage to thestable stage In terms of spatial evolution thecoastal areas of the YRD from 2006 to 2016 con-tinued to be the hot spots in general -e coastalareas of the PRD and the BER showed a mix of hotand cold spots -e spatial evolution pattern ofhigh-quality development of the marine economybasically formed a multipolar distribution alter-nating between high medium and low qualities-e pattern of development presents the charac-teristics of regional spatial linkage rather than amonolithic development
(3) Classification of high-quality development of marineeconomy Based on the score ranges advanced-levelareas include Guangdong Shanghai ShandongZhejiang and Tianjin intermediate-level areas in-clude Fujian Jiangsu Hainan and Liaoning andprimary-level areas include Hebei and Guangxi
From a perspective of sustainable development researchon the high-quality development of the marine economyneeds to address scientific issues such as high-level inte-gration and interdisciplinary research unification of con-ceptual framework and establishment of theoretical systemsdetermination of evaluation scales and thresholds andimprovement of marine economic statistical systems in thefuture
Data Availability
-e data used in this paper are given in the governmentstatistical yearbook
Conflicts of Interest
-e authors have no conflicts of interest
Acknowledgments
-is work was supported by the general program of theNational Natural Science Foundation of China (41976207)
References
[1] R E Smalley Our Energy Challenge Columbia UniversityNew York City NY USA 2003
[2] J Yang W Liu Y H Li X M Li and Q S Ge ldquoSimulatingintraurban land use dynamics under multiple scenarios basedon fuzzy cellular automata a case study of jinzhou districtdalianrdquo Complexity vol 2018 Article ID 7202985 17 pages2018
[3] J Yang P Xie J C Xi Q S Ge X M Li and Z D MaldquoLUCC simulation based on the cellular automata simulationa case study of dalian economic and techological developmentzonerdquo Acta Geographica Sinica vol 70 no 3 pp 461ndash4752015
[4] E Ostrom ldquoA general framework for analyzing sustainabilityof social-ecological systemsrdquo Science vol 325 no 5939pp 419ndash422 2009
[5] M Xie J Wang and K Chen ldquoCoordinated developmentanalysis of the ldquoresources-environment-ecology-economy-societyrdquocomplex system in Chinardquo Sustainability vol 8 no 6pp 582ndash604 2016
[6] K Pakalniete J Aigars M Czajkowski S Strake E Zawojskaand N Hanley ldquoUnderstanding the distribution of economicbenefits from improving coastal and marine ecosystemsrdquoScience of the Total Environment vol 584-585 pp 29ndash402017
[7] J-B Marre T Olivier S Pascoe S Jennings J Boncoeur andL Coglan ldquoIs economic valuation of ecosystem services usefulto decision-makers lessons learned from Australian coastaland marine managementrdquo Journal of Environmental Man-agement vol 178 pp 52ndash62 2016
[8] K Chakraborty K Das and T K Kar ldquoModeling and analysisof a marine plankton system with nutrient recycling anddiffusionrdquo Complexity vol 21 no 1 pp 229ndash241 2014
[9] D Ferrol-Schulte M Wolff S Ferse and M Glaser ldquoSus-tainable livelihoods approach in tropical coastal and marinesocialndashecological systems a reviewrdquo Marine Policy vol 42no 14 pp 253ndash258 2013
[10] K Inaba ldquoJapanese marine biological stations preface to thespecial issuerdquo Regional Studies in Marine Science vol 2pp 154ndash157 2015
[11] G Nilsen ldquoSurplus production andmarine resource use in thenorth norwegian iron agerdquo International Journal of NauticalArchaeology vol 46 no 2 pp 231ndash252 2017
[12] MWhite and G OrsquoSullivan ldquoImplications of EUROGOOS onmarine policy making in a small maritime economyrdquo ElsevierOceanography Series vol 62 pp 278ndash285 1997
[13] S E Schutz and A-M Slater ldquoFrom strategic marine plan-ning to project licencesndashstriking a balance between predict-ability and adaptability in the management of aquaculture andoffshore wind farmsrdquo Marine Policy vol 110 Article ID103556 2019
[14] B Li Z Y Shi Z L Han and C Tian ldquoSpatio-temporaldifference and influencing factors of environmental adapt-ability measurement of human-sea economic system in BohaiRim regionrdquo Acta Geographica Sinica vol 73 no 6pp 1121ndash1132 2018
[15] R A M Lauerburg R Diekmann B Blanz et al ldquoSocio-ecological vulnerability to tipping points a review of empiricalapproaches and their use for marine managementrdquo Science ofthe Total Environment vol 705 Article ID 135838 2020
[16] T Agardy M Cody S Hastings et al ldquoLooking beyond thehorizon an early warning system to keep marine mammalinformation relevant for conservationrdquoAquatic ConservationMarine and Freshwater Ecosystems vol 29 no S2 pp 71ndash832019
[17] L H Gao and Q Gao ldquoValidation and calculation of thecoordination degree of interactive relationships in the marineeco-economic systemrdquo Resources Science vol 34 no 1pp 173ndash184 2012
[18] D Jia ldquoCoupling and coordination of marine high-end hu-man resources and marine innovative economic developmentabilityrdquo Journal of Coastal Research vol 94 no sp1pp 573ndash576 2019
[19] S-H Wang Y-C Wang and M-L Song ldquoConstruction andanalogue simulation of TERE model for measuring marinebearing capacity in Qingdaordquo Journal of Cleaner Productionvol 167 pp 1303ndash1313 2017
10 Complexity
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11
[20] Y Zhang and A Kendall ldquoConsequential analysis of algalbiofuels benefits to ocean resourcesrdquo Journal of CleanerProduction vol 231 pp 35ndash42 2019
[21] J J Freer G A Tarling M A Collins J C Partridge andM J Genner ldquoPredicting future distributions of lanternfish asignificant ecological resource within the Southern OceanrdquoDiversity and Distributions vol 25 no 8 pp 1259ndash1272 2019
[22] B Li C Tian and Z Y Shi ldquoSpatio-temporal analysis andtype classification of marine economic growth quality inBohai Rim regionrdquo Resources Science vol 39 no 11pp 2052ndash2061 2017
[23] B Li C Tian Z Y Shi and Z L Han ldquoSpatial characteristicsand influencing factors of marine economic growth quality inLiaoning coastal areasrdquo Progress in Geography vol 38 no 7pp 1080ndash1092 2019
[24] K-H Lee J S Noh and J S Khim ldquo-e blue economy andthe united nationsrsquo sustainable development goals challengesand opportunitiesrdquo Environment International vol 137Article ID 105528 2020
[25] M D Smith J Lynham J N Sanchirico and J A WilsonldquoPolitical economy of marine reserves understanding the roleof opportunity costsrdquo Proceedings of the National Academy ofSciences vol 107 no 43 pp 18300ndash18305 2010
[26] MW Lin C Huang and Z S Xu ldquoTOPSIS method based oncorrelation coefficient and entropy measure for linguisticpythagorean fuzzy sets and its application to multiple attri-bute decision makingrdquo Complexity vol 2019 Article ID6967390 16 pages 2019
[27] M-S Yang and Z Hussain ldquoFuzzy entropy for pythagoreanfuzzy sets with application tomulticriterion decisionmakingrdquoComplexity vol 2018 Article ID 2832839 14 pages 2018
[28] S H Jin J Yang E X Wang and J Liu ldquo-e influence ofhigh-speed rail on icendashsnow tourism in northeastern ChinardquoTourism Management vol 78 Article ID 104070 2020
[29] R Ding ldquo-e complex network theory-based urban land-useand transport interaction studiesrdquo Complexity vol 2019Article ID 4180890 14 pages 2019
[30] B W Silverman Density Estimation for Statistics and DataAnalysis CRC Press Boca Raton FL USA 1986
[31] S Wallenstein C L Zucker and J L Fleiss ldquoSome statisticalmethods useful in circulation researchrdquo Circulation Researchvol 47 no 1 pp 1ndash9 1980
[32] R W Kates W C Clark R Corell et al ldquoSustainabilitySciencerdquo Science vol 292 no 5517 pp 641-642 2001
[33] Q B Di Z Yu and L X Xu ldquoSpatial-temporal coordinationmode of marine economic development under the back-ground of high quality growth based on the empirical study ofprefecture-level cities in Circum-Bohai Seardquo Scientia Geo-graphica Sinica vol 39 no 10 pp 1621ndash1630 2019
[34] F Y Guo L J Tong Z G Liu H J Zhao and A L HouldquoSpatial-temporal pattern and influencing factors of industrialecology in Shandong province based on panel data of 17citiesrdquo Geographical Research vol 38 no 9 pp 2226ndash22382019
Complexity 11