Impact of urban greenspace on the urban thermal environment: A case study of Shenzhen, China

被引：14
作者：
Bai, Yu [1 ,2 ]
Liu, Menghang [2 ,3 ]
Wang, Weimin [4 ,5 ,6 ]
Xiong, Xiangyun [4 ,5 ,6 ]
Li, Shenggong [1 ,7 ]
机构：
[1] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China
[4] Shenzhen Ecol Environm Monitoring Ctr Guangdong Pr, Shenzhen 518049, Peoples R China
[5] Natl Observat & Res Stn, Guangdong Greater Bay Area, Change & Comprehens Treatment Reg Ecol & Environm, Shenzhen 523722, Peoples R China
[6] State Environm Protect Sci Observat & Res Stn Ecol, Shenzhen 518000, Peoples R China
[7] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
来源：
SUSTAINABLE CITIES AND SOCIETY | 2024年 / 112卷
关键词：
Urban thermal environment; Urban greenspace; Land surface temperature (LST); Diurnal temperature range (DTR); Thermal remote sensing; LAND-USE; CLIMATE; SURFACE; TEMPERATURE; ALBEDO; MODIS; DEFORESTATION; INDICATORS; FEEDBACKS; DYNAMICS;
D O I：
10.1016/j.scs.2024.105591
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Rapid urban expansion has significantly altered the urban surface energy balance, consequently impacting the urban thermal environment. Urban greenspace (UG) plays a crucial role in regulating urban climate. This study utilizes a seamless land surface temperature (LST) dataset to elucidate the spatio-temporal patterns of LST and diurnal temperature range (DTR) in Shenzhen, a rapidly urbanizing city in China, and the influence of UG on urban thermal environment. The UG showed a notable decrease of 16.3 % from 2000 to 2020. Over the past 21 years, both daytime LST (LSTD) and nighttime LST (LSTN) exhibited an upward trend, while DTR showed a significant downward trend, especially in autumn. Significant spatial changes in LSTD, LSTN, and DTR were observed in winter across the entire city. Moreover, our results emphasize that the impact of UG on LSTD displays non-uniform cooling and varies significantly in terms of season, greenspace quality, and geographical location. Our assessment of changes in the urban thermal environment in Shenzhen and the role of UG on LST can offer theoretical support for policymakers in developing effective urban cooling measures and healthy urban development.
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页数：13
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