The cumulative effects of urban expansion on land surface temperatures in metropolitan Jingjintang, China

doi:10.1002/2015JD023653

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 农业减灾研究室

	The cumulative effects of urban expansion on land surface temperatures in metropolitan Jingjintang, China
	Hu, Yonghong 1; Jia, Gensuo 2; Hou, Meiting 3; Zhang, Xiaoxuan 1,4; Zheng, Feixiang 5; Liu, Yonghe 6
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2015
卷号	120 期号:19 页码:-
ISSN号	2169-897X
DOI	10.1002/2015JD023653
通讯作者	Hu, Yonghong
英文摘要	Rapid urbanization has resulted in the permanent conversion of large areas of cropland and natural vegetation to impervious surfaces and therefore greatly modified land surface properties and land-atmosphere interactions. This study sought to examine the urbanization process using Landsat images from 2001 to 2010 in metropolitan Jingjintang (JJT), a rapidly expanding urban cluster in northern China. We aggregated the original results of land use data as fractional cover information in 1 km and 10 km grids. Annual and seasonal land surface temperatures (LSTs) were processed from Moderate Resolution Imaging Spectroradiometer products. We used moving window and gradient analysis methods to examine the differences in LST between urban and other land types, further identifying LST increases in gradients of urbanization levels. Urban extent increased by 1.6 times, and approximately 45% newly developed areas were converted from croplands during this process. Emerging urban land in JJT has caused approximately 0.85 +/- 0.68 degrees C warming in terms of annual mean LST, and the greatest warming occurred in the summer. An increase in urban land of 10% in a 1 km grid in JJT would cause approximately a 0.21 degrees C increase in annual LST. Urbanization also led to increases in daytime LSTs and nighttime LSTs by approximately 1.03 +/- 1.38 degrees C and 0.78 +/- 1.02 degrees C, respectively. The warming trend induced by urbanization exhibits clear seasonal and diurnal differences, and this warming trend is most likely caused by the cumulative effects of changes in land properties, radiation storage, and anthropogenic heat release by urbanization.
学科主题	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000365432800007
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19736]
专题	农业环境与可持续发展研究所_农业减灾研究室
作者单位	1.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm East Asia, Beijing, Peoples R China 3.China Meteorol Adm Training Ctr, Beijing, Peoples R China 4.China Univ Petr, Sch Geosci, Qingdao, Peoples R China 5.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100193, Peoples R China 6.Henan Polytech Univ, Sch Resources & Environm, Jiaozuo, Peoples R China
推荐引用方式 GB/T 7714	Hu, Yonghong,Jia, Gensuo,Hou, Meiting,et al. The cumulative effects of urban expansion on land surface temperatures in metropolitan Jingjintang, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2015,120(19):-.
APA	Hu, Yonghong,Jia, Gensuo,Hou, Meiting,Zhang, Xiaoxuan,Zheng, Feixiang,&Liu, Yonghe.(2015).The cumulative effects of urban expansion on land surface temperatures in metropolitan Jingjintang, China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,120(19),-.
MLA	Hu, Yonghong,et al."The cumulative effects of urban expansion on land surface temperatures in metropolitan Jingjintang, China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 120.19(2015):-.