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

Yunfang Jiang (), Xiaolin Li and Jing Huang
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Yunfang Jiang: School of Urban and Regional Science, East China Normal University, Shanghai 200241, China
Xiaolin Li: School of Urban and Regional Science, East China Normal University, Shanghai 200241, China
Jing Huang: Shenzhen Overseas Chinese Town Middle School, Shenzhen 518053, China

IJERPH, 2022, vol. 19, issue 23, 1-32

Abstract: 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.

Keywords: urban heat island (UHI); blue–green space; riverfront area; spatial morphology; urban cooling effect (UCI); boosted regression trees (BRT); marginal effect (ME); Shanghai (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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