Impacts of Built-Up Area Expansion in 2D and 3D on Regional Surface Temperature

doi:10.3390/su9101862

	Impacts of Built-Up Area Expansion in 2D and 3D on Regional Surface Temperature
	Cai, Hongyan; Xu, Xinliang
刊名	SUSTAINABILITY
	2017-10-01
卷号	9 期号:10 页码:16
关键词	building height urbanization land surface temperature Beijing-Tianjin-Hebei SPOT5 Gaofen2
ISSN号	2071-1050
DOI	10.3390/su9101862
通讯作者	Cai, Hongyan(caihy@igsnrr.ac.cn) ; Xu, Xinliang(xuxl@lreis.ac.cn)
英文摘要	Many studies have reported the thermal effects of urban expansion from non-built-up land; however, how changes in building height in built-up land influence the regional thermal environment is still uncertain. Thus, taking the transitional region between the Chinese megacities of Beijing and Tianjin as the study area, this study investigated the impacts of built-up land expansion in 2D and 3D on regional land surface temperature (LST). The expansion in 2D refers to the conversion from non-built-up land to built-up land, whereas the expansion in 3D characterized the building height change in the built-up land, referring to the conversion from low- and moderate-rise building (LMRB) to high-rise building (HRB) lands. The land use change from 2010 to 2015 was manually interpreted from high spatial resolution SPOT5 and Gaofen2 images, and the LST information in the corresponding period was derived from Landsat5/8 thermal images using an image-based method. The results showed that between 2010 and 2015, approximately 87.25 km(2) non-built-up land was transformed to built-up land, and 13.21 km(2) LMRB land was built into HRB land. These two types of built-up land expansions have induced opposing thermal effects in regard to regional surface temperature. The built-up land expansions from cropland and urban green land have raised the regional LST. However, the built-up land expansion from LMRB to HRB lands has induced a cooling effect. Thus, this study suggested that for the cooling urban design, the building height should also be considered. Furthermore, for future studies on thermal impacts of urbanization, it should be cautioned that, besides the urban area expansion, the building height change should also be emphasized due to its potential cooling effects.
资助项目	National Key Research and Development Program of China[2017YFC0503803] ; National Science Foundation of China[41421001] ; National Science Foundation of China[41771460] ; National Science and Technology Pillar Program[2012BAI32B07] ; National Science and Technology Pillar Program[2012BAI32B06]
WOS关键词	URBAN HEAT-ISLAND ; LAND-USE CHANGE ; AIR-TEMPERATURE ; TEMPORAL PATTERNS ; UNITED-STATES ; CHINA ; URBANIZATION ; CLIMATE ; RETRIEVAL ; SHANGHAI
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000414896200192
资助机构	National Key Research and Development Program of China ; National Science Foundation of China ; National Science and Technology Pillar Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/56758]
专题	中国科学院地理科学与资源研究所
通讯作者	Cai, Hongyan; Xu, Xinliang
作者单位	Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Cai, Hongyan,Xu, Xinliang. Impacts of Built-Up Area Expansion in 2D and 3D on Regional Surface Temperature[J]. SUSTAINABILITY,2017,9(10):16.
APA	Cai, Hongyan,&Xu, Xinliang.(2017).Impacts of Built-Up Area Expansion in 2D and 3D on Regional Surface Temperature.SUSTAINABILITY,9(10),16.
MLA	Cai, Hongyan,et al."Impacts of Built-Up Area Expansion in 2D and 3D on Regional Surface Temperature".SUSTAINABILITY 9.10(2017):16.