Zoning Optimization Method of a Riverfront Greenspace Service Function Oriented to the Cooling Effect: A Case Study in Shanghai

Blue-green space commonly provides multiple ecological service functions, especially thermal environment comfort for citizens. The greenspace of the riparian buffers along 22 river channels in Shanghai was selected as the study object, and remote sensing and GIS technologies were used to obtain the...

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Bibliographic Details
Published in:International journal of environmental research and public health 2022-12, Vol.19 (23), p.16191
Main Authors: Jiang, Yunfang, Li, Xiaolin, Huang, Jing
Format: Article
Language:English
Subjects:
China
Cities
City Planning
Cold Temperature
Composition
Cooling
Cooling effects
Differentiation
Ecological effects
Environmental Monitoring - methods
Hot Temperature
Humidity
Land surface temperature
Mathematical models
Microclimate
Morphology
Optimization
Remote sensing
Riparian buffers
Riverfronts
Rivers
Rural areas
Simulation
Software
Spatial distribution
Statistical analysis
Suburban areas
Thermal environments
Vegetation
Water temperature
Zoning
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Summary:Blue-green space commonly provides multiple ecological service functions, especially thermal environment comfort for citizens. The greenspace of the riparian buffers along 22 river channels in Shanghai was selected as the study object, and remote sensing and GIS technologies were used to obtain the quantitative composition and morphological indices of riverfront greenspace and the spatial distribution data of the land surface temperature in the study area. Through BRT modelling and statistical analyses, the interactive correlations among the three aspects, namely, the spatial patterns of riverfront greenspace, their specific functional zoning, and cooling island differentiation characteristics, were explored. The results showed that different river types served for different functional zones of the city, namely, high-density built-up zoning, new urban-growth zoning in built-up areas, suburban areas, and rural areas, and had specific regular patterns of morphosis and service function of riverfront greenspace. These also led to a significant spatial differentiation pattern of cooling intensity levels, which generally appeared in the approximate circle differentiation structure of the cooling island in the city riverfront area. The study further proposed the key factors and corresponding strategies for optimizing the greenspace pattern to strengthen the cooling intensity levels of different river types. This study summarizes the landscape composition paradigm of riverfront greenspaces at the urban mesoscale and provides adaptive planning methods for better local microclimate conditions.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph192316191