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	What are hot and what are not in an urban landscape: quantifying and explaining the land surface temperature pattern in Beijing, China
	Kuang W. H.; Liu, Y.; Dou, Y. Y.; Chi, W. F.; Chen, G. S.; Gao, C. F.; Yang, T. R.; Liu, J. Y.; Zhang, R. H.
	2015
关键词	Urban heat island Land surface temperature Urban landscape Land-use/land-cover MODIS Portable infrared thermometer tangshan metropolitan-area heat-island ecological-systems driving forces variability impacts growth configuration environment emissivity
英文摘要	Understanding how landscape components affect the urban heat islands is crucial for urban ecological planning and sustainable development. The purpose of this study was to quantify the spatial pattern of land surface temperatures (LSTs) and associated heat fluxes in relation to land-cover types in Beijing, China, using portable infrared thermometers, thermal infrared imagers, and the moderate resolution imaging spectroradiometer. The spatial differences and the relationships between LSTs and the hierarchical landscape structure were analyzed with in situ observations of surface radiation and heat fluxes. Large LST differences were found among various land-use/land-cover types, urban structures, and building materials. Within the urban area, the mean LST of urban impervious surfaces was about 6-12 A degrees C higher than that of the urban green space. LSTs of built-up areas were on average 3-6 A degrees C higher than LSTs of rural areas. The observations for surface radiation and heat fluxes indicated that the differences were caused by different fractions of sensible heat or latent heat flux in net radiation. LSTs decreased with increasing elevation and normalized difference vegetation index. Variations in building materials and urban structure significantly influenced the spatial pattern of LSTs in urban areas. By contrast, elevation and vegetation cover are the major determinants of the LST pattern in rural areas. To alleviate urban heat island intensity, urban planners and policy makers should pay special attention to the selection of appropriate building materials, the reasonable arrangement of urban structures, and the rational design of landscape components.
出处	Landscape Ecology
卷	30
期	2
页	357-373
收录类别	SCI
语种	英语
ISSN号	0921-2973
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38685]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Kuang W. H.,Liu, Y.,Dou, Y. Y.,et al. What are hot and what are not in an urban landscape: quantifying and explaining the land surface temperature pattern in Beijing, China. 2015.

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