Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of Shenzhen
Under the background of rapid urbanization, the urban heat island (UHI) effect is becoming increasingly significant. It is very important for the sustainable development of cities to carry out quantitative research on the mitigation of the UHI effect at an urban scale. Taking Shenzhen as an example,...
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doaj-df85c48a8082478bba08e6b80a1ebf312020-11-25T03:28:17ZengMDPI AGSustainability2071-10502020-07-01125903590310.3390/su12155903Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of ShenzhenJiansheng Wu0Si Li1Nan Shen2Yuhao Zhao3Hongyi Cui4Key Laboratory for Urban Habitat Environmental Science and Technology, School of Urban Planning and Design, Peking University, Shenzhen 518055, ChinaKey Laboratory for Urban Habitat Environmental Science and Technology, School of Urban Planning and Design, Peking University, Shenzhen 518055, ChinaKey Laboratory for Urban Habitat Environmental Science and Technology, School of Urban Planning and Design, Peking University, Shenzhen 518055, ChinaKey Laboratory for Urban Habitat Environmental Science and Technology, School of Urban Planning and Design, Peking University, Shenzhen 518055, ChinaCollege of Social Science, Shenzhen University, Shenzhen, Guangdong 518060, ChinaUnder the background of rapid urbanization, the urban heat island (UHI) effect is becoming increasingly significant. It is very important for the sustainable development of cities to carry out quantitative research on the mitigation of the UHI effect at an urban scale. Taking Shenzhen as an example, this paper puts forward a method for building a cooling corridor for the city with multiscenarios based on the theory of ecological security pattern (ESP), which can realize quantitative planning of the spatial layout of urban green infrastructure (UGI) to alleviate the UHI effect. In this study, cooling sources are identified from the three dimensions of habitat quality, landscape connectivity, and the capacity to provide cooling ecosystem services. The cooling corridors that are superior at cooling, isolation, and ventilation are selected and optimized. The results show that the identified ecological cooling source area accounts for 33.18% of the total area of Shenzhen, and more than 85% of the area falls within the scope of the basic ecological control line of Shenzhen. There are 48 cooling corridors with a total length of 289.17 km in the cooling priority scenario, which mostly pass through the high-temperature and subhigh-temperature areas of each administrative region and city, providing a good cooling effect but poor feasibility. There are 48 corridors with a total length of 326.66 km in the isolation priority scenario, which mostly pass through the administrative region boundary and have a weak connection with the urban heat island, avoiding the built-up areas with strong human activities. As consequence, cooling is relatively achievable, but its effect is not ideal. There are 47 corridors with a total length of 368.06 km in the ventilation priority scenario, including many urban main roads and river systems that fully utilize the area’s strong natural wind conditions and realize various functions; however, the cooling effect is suboptimal. Corridors with great potential in cooling, isolation, ventilation, and noise reduction were determined after comprehensive optimization.https://www.mdpi.com/2071-1050/12/15/5903urban heat island effecturban green infrastructuremultiscenariocooling corridorShenzhen |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jiansheng Wu Si Li Nan Shen Yuhao Zhao Hongyi Cui |
spellingShingle |
Jiansheng Wu Si Li Nan Shen Yuhao Zhao Hongyi Cui Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of Shenzhen Sustainability urban heat island effect urban green infrastructure multiscenario cooling corridor Shenzhen |
author_facet |
Jiansheng Wu Si Li Nan Shen Yuhao Zhao Hongyi Cui |
author_sort |
Jiansheng Wu |
title |
Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of Shenzhen |
title_short |
Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of Shenzhen |
title_full |
Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of Shenzhen |
title_fullStr |
Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of Shenzhen |
title_full_unstemmed |
Construction of Cooling Corridors with Multiscenarios on Urban Scale: A Case Study of Shenzhen |
title_sort |
construction of cooling corridors with multiscenarios on urban scale: a case study of shenzhen |
publisher |
MDPI AG |
series |
Sustainability |
issn |
2071-1050 |
publishDate |
2020-07-01 |
description |
Under the background of rapid urbanization, the urban heat island (UHI) effect is becoming increasingly significant. It is very important for the sustainable development of cities to carry out quantitative research on the mitigation of the UHI effect at an urban scale. Taking Shenzhen as an example, this paper puts forward a method for building a cooling corridor for the city with multiscenarios based on the theory of ecological security pattern (ESP), which can realize quantitative planning of the spatial layout of urban green infrastructure (UGI) to alleviate the UHI effect. In this study, cooling sources are identified from the three dimensions of habitat quality, landscape connectivity, and the capacity to provide cooling ecosystem services. The cooling corridors that are superior at cooling, isolation, and ventilation are selected and optimized. The results show that the identified ecological cooling source area accounts for 33.18% of the total area of Shenzhen, and more than 85% of the area falls within the scope of the basic ecological control line of Shenzhen. There are 48 cooling corridors with a total length of 289.17 km in the cooling priority scenario, which mostly pass through the high-temperature and subhigh-temperature areas of each administrative region and city, providing a good cooling effect but poor feasibility. There are 48 corridors with a total length of 326.66 km in the isolation priority scenario, which mostly pass through the administrative region boundary and have a weak connection with the urban heat island, avoiding the built-up areas with strong human activities. As consequence, cooling is relatively achievable, but its effect is not ideal. There are 47 corridors with a total length of 368.06 km in the ventilation priority scenario, including many urban main roads and river systems that fully utilize the area’s strong natural wind conditions and realize various functions; however, the cooling effect is suboptimal. Corridors with great potential in cooling, isolation, ventilation, and noise reduction were determined after comprehensive optimization. |
topic |
urban heat island effect urban green infrastructure multiscenario cooling corridor Shenzhen |
url |
https://www.mdpi.com/2071-1050/12/15/5903 |
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