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A text-mining approach to assess impacts and benefits of
Nature-Based Solutions Leydy Alejandra Castellanos Díaz (1), Pierre Antoine Versini (1),
Ioulia Tchiguirinskaia (1) and Olivier Bonin (2)
(1) HM&Co, Ecole des Ponts ParisTech, UPE, Champs-sur-Marne, France ([email protected]),(2) LVMT, Ecole des Ponts ParisTech, UPEM, IFSTTAR, Champs-sur-Marne, France
Urban Sustainability Challenges
Urban sprawlClimate changes effects
Nature-based Solutions
NbS “living solutions inspired and continuously supported by nature, which aredesigned to address various societal challenges in a resource-efficient andadaptable manner and to provide simultaneously economic, social, andenvironmental benefits” EC, 2015
Urban resilience
Green walls
Green roofs
Green swales
Pervious pavements
Urban parks
Urban wetlands…
Framework of design, development, implementation and
assessment of NbS in the urban context.
Mapping and assessment of ecosystems condition and their
services.
NbS assessment tool for urban areas with their economic
implications.
Physic, social and economic impacts and
benefits?
Funding European projects: Review of scientific literature
Nature-based Solutions
Converting text data into a meaningful structured analysis, allowing to recognize concepts as well as
to identify stakeholders and their position.
Literature review onNature-based solutions
Text-Mining
Objective analysis and comparison of documents
Metadata on scientific publications (abstracts, keywords, title, date of publication and author).
Traditional analysis
Each report divided in smaller units.
This analysis
Literature review onNature-based solutions
Text-Mining
Data visualization and statistical analysis
Network:• Node: key terms• Edge: connections between nodes• Clusters: communities of nodes
Occurrence of terms in the report
Statistical analysis: • Degree of nodes: number of edges connected to a node • Edge weight: strength of link between nodes
311
207175
171
884226
Accumulated Degree
3430
18
30
1511
7
1 2 3 4 5 6 7
Number of nodes
47
36 3428
19 18
1 2 3 4 5 6
Number of nodes
420
266
260
117
9792
Accumulated Degree
21 19 21
12 11
1 2 3 4 5
Number of nodes
137
110109
91
54
Accumulated Degree
Urban planning
Nature-based SolutionsEcosystem
Services provision
Effectiveness assessment
Deployment
ESS categories: MEA, 2003
RegulationProvision
CulturalSupport
Spatial scale:• EU•Meso-scale• Local
Stakeholders:• EC, EEA, States• Local authorities (city council)• Local communities-citizens
Indicators
Quality and condition
Value of nature
Multi-Spatial scale
Temperature and stormwater
Usability of ESS
•Decision making•Public and private investment
Participatory planning
