1st National Geographic Conditions Census of China

and Its Applications in Poverty Alleviation, Food Security

and Sustainable Development

Dr. ZHOU Xu

National Geomatics Center of China

History

• Oct. 2010, National Administration of Survying, Mapping

and Geoinformation(NASG) started to propose the

program

• Sep.2011,the Sate Council approved the proposal

• Sep.2012, the program initiated with fund from center

government

• Mar. 2013, the Sate Council claimed to conduct 1st nation-

wide geographic conditions census

Imagery data processing

Information Extract

Field Check Data Editing and compiling

Overview of the Process

总体过程

More than 50,000 technicians spend 3 years from 2013 to 2015 , and ￥8.6 Billion, capturing data. We constructed a integrated database and published the report in Apr. 2017

All d

ata

results

：302

.9 T

B

所有最终数据成果总量

Land Cover Data

地表覆盖数据

Feature Data

地理要素数据

Geotagged Photo

解译样本数据

Spatial Metadata

空间元数据

>260 million parcels 超过2.6亿图斑

Entity of road、water body and

geographic unit, >25 million 道路、水体、地理单元实体，超过2500万个

Geotagged Photo,2.95 million, 10.39 TB

Tracks of field check: 10.62 million km 其中外业核查路线超过1000万千米

Terrain data

地形数据

Ortho-imagery

正射影像 90% resolution best than 1m，280 TB 其中90%的影像分辨率优于1米

DEM、Slope、Aspect: 10.79 TB 包括高程、坡度、坡向等数据

>320GB

the 1st National Geographic Conditions Census

第一次全国地理国情普查主要成果

Data Sources 数据源 Satellites Data type Spectral（nm） Band No. Res.（m） Num. of Bands

WorldView-1 panchromatic 400-900 0.5 1

WorldView-2

panchromatic 450-800 0.5 1

multispectral

450-510(蓝) 1

1.84 4 510-580(绿) 2

630-690(红) 3 770-895(红外1) 4

QUICKBIRD

panchromatic 610-720 0.61 1

multispectral

450-520(蓝) 1

2.44 4 520-600(绿) 2

630-690(红) 3

760-900(近红外) 4

SPOT5

panchromatic 490-690 2.5 1

multispectral 490-610(绿) 1

10 3 610-680(红) 2

780-890(近红外) 3

SPOT6

panchromatic 455-745 1.5 1

multispectral

455-525(蓝) 1

6 4 530-590(绿) 2

625-695(红) 3

760-890 (近红外) 4

ZY-3

panchromatic 500-800 2.1 1

multispectral

450-520(蓝) 1

6 4 520-590(绿) 2

630-690(红) 3

770-890(近红外) 4

IKONOS

panchromatic 450-900 1 1

multispectral

450-520(蓝) 1

4 4 510-600(绿) 2

630-700(红) 3

760-850(近红外) 4

GeoEye-1

panchromatic 450-800 0.41 1

multispectral

450-510 (蓝) 1

1.65 4 510-580 (绿) 2

655-690 (红) 3

780-920 (近红外) 4

pléiade-1A/1B

panchromatic 480-830 0.5 1

multispectral

430-550(蓝) 1

2.0 4 490-610(绿) 2

600-720(红) 3

750-950(近红外) 4

And k

inds o

f dig

ital a

eria

l photo

data

Sat.

Aerial Aerial

Aerial

Aerial

Data Results Sample: Land Cover Data 数据成果实例：地表覆盖数据

High resolution imagery data

Crops

Woods

Bulding

s

Roa

d

Garden

Grass

wate

r

Building

site

Classification system for land cover

地表覆盖分类系统

8

No. 1st level class 2nd level class 3rd level class

01 Crops 耕地 2 2

02 Garden 园地 7 11

03 Woods 林地 8 12

04 Grass 草地 2 8

05 Buildings 房屋建筑（区） 5 10

06 Road 道路 2 2

07 Structures 构筑物 8 19

08 Disarranged 人工堆掘地 4 14

09 Bared 裸露地表 5 5

10 Water 水域 2 4

总计 10 45 87

3 levels, 1st level: 10 ，2nd level: 45 ，3rd level: 87。

Basins and Rivers

Feature Data：Water 地理要素数据：水系

Railways and roads

Feature Data：Transportation 地理要素数据：交通

Counties Towns Villages Residential sites

Feature Data：Geographic Units 地理要素数据

Following work: Geographic Conditions Monitoring

持续工作：地理国情监测

• Monitoring 监测

– To update the data annually since 2016 每年数据更新

– Data source: 2 meters imagery data for the whole

country, better than 1 meter imagery data for about 2

million square km frequently changing area

– 全国使用2米分辨率影像，重点区域采用由于1米分辨率的影像

• Application 应用

– To set up a geographic computing center 建立云计算平台

– To provide online analytical processing service 提供在线

分析服务

– To develop derived data products 衍生数据产品开发

Application in Poverty Alleviation

Distribution of the poor

Application in Poverty Alleviation

Information of poor individuals

Planning of

relocating the poor

Application in Poverty Alleviation

development-orientated

poverty reduction

就地开发扶贫

Application in Poverty Alleviation

Monitor the progress of developing

Application in food security management

• Based on the data, every year we can get the

correct area of planted land, and the structure

of the planted crops.

• According to the data, the government can get

accurate production to make decision on food

security management

country level applications in Sustainable Development

• Ministry of Environment Protection

– nature reserves management

– delineation of ecological area borders

• National Bureau of Statistics

– natural resources balance sheet，used for performing

audits on officials activities when they leave office

• Ministry of Housing and Urban-Rural development

– Evaluation of urban planning implementation

– Polluted water treatment in urban area

• Other Ministries

– plans coordination and Integration

Overlay on our data to fix the

conflicts

Conflicts between plans

Urban and Environment planning

Land use and forestry planning

Land use and Urban planning

Urban and Farmland planning

plans coordination

Thanks!