干旱区生态环境知识资源中心(Arid): Divergent trends of urban thermal environmental characteristics in China

Arid

DOI	10.1016/j.jclepro.2020.125053
	Divergent trends of urban thermal environmental characteristics in China
	Zheng, Yuhan; Huang, Lin; Zhai, Jun
通讯作者	Zhai, J (corresponding author), Minist Ecol & Environm, Satellite Environm Ctr, Beijing 100094, Peoples R China.
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2021
卷号	287
英文摘要	Due to the rapid urbanization in China, urban expansion has gradually shifted from large cities to small cities, causing spatiotemporal changes in the urban thermal environment. The differential thermal environmental characteristics of 334 cities at different hierarchy caused by urbanization are investigated in this study. Then, the spatiotemporal changes of land surface temperature (LST), albedo, and emissivity among urban areas and their surrounding buffer areas are analyzed during 2000-2015. We found that the urban warming effect is usually prominent in the daytime, with an obvious seasonal differentiation between 0.32 degrees C[0.27, 0.38] in summer and -0.14 degrees C[-0.20, -0.07] in winter. The nighttime warming effect during summer resembles that in winter, in the range 0.23-0.25 degrees C. In addition, the number of cities with intensifying trends of the warming effect in summer daytime account for 50% of the total cities, but only 9% in winter nighttime, 23% in summer nighttime, and 25% in winter daytime. Large cities usually have obvious warming effects compared with small cities. But the highest warming effect is found in megacities during the daytime and in medium cities during the nighttime. In southern subtropical cities, the warming of urban zones is high in the daytime and low in the nighttime, while it is opposite in arid and semiarid regions, especially in winter. The negative correlations between the difference of surface albedo (emissivity) and LST in megacities and metropolitan areas emphasize that nighttime warming primarily results from radiation absorption and release affected by urbanization. This study may advance the understanding of the heterogeneity in the warming effects of different cities in China and support policy formulation and regulation to adapt to urban warming. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Urbanization Warming effect Urban scales Bio-physical processes China
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000611890600004
WOS关键词	LAND-COVER CHANGE ; HEAT-ISLAND ; TEMPORAL TRENDS ; AIR-TEMPERATURE ; LONG-TERM ; SURFACE ; CLIMATE ; URBANIZATION ; IMPACTS ; EXPANSION
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368951
作者单位	[Zheng, Yuhan] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China; [Zheng, Yuhan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Huang, Lin] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; [Zhai, Jun] Minist Ecol & Environm, Satellite Environm Ctr, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Yuhan,Huang, Lin,Zhai, Jun. Divergent trends of urban thermal environmental characteristics in China[J]. 中国科学院地理科学与资源研究所,2021,287.
APA	Zheng, Yuhan,Huang, Lin,&Zhai, Jun.(2021).Divergent trends of urban thermal environmental characteristics in China.JOURNAL OF CLEANER PRODUCTION,287.
MLA	Zheng, Yuhan,et al."Divergent trends of urban thermal environmental characteristics in China".JOURNAL OF CLEANER PRODUCTION 287(2021).