Spatial and Temporal Dynamics of Urban Heat Island and Their Relationship with Land Cover Changes in Urbanization Process: A Case Study in Suzhou, China
文献类型: 外文期刊
第一作者: Xu, Yongming
作者: Xu, Yongming;Xu, Yongming;Qin, Zhihao;Wan, Hongxiu;Qin, Zhihao;Wan, Hongxiu
作者机构:
关键词: Urban heat island;Land cover;Remote sensing;Buffer analysis;Spatial and temporal dynamics
期刊名称:JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING ( 影响因子:1.563; 五年影响因子:1.485 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: One of the significant environmental consequences of urbanization is the urban heat island (UHI). In this paper, Landsat TM images of 1986 and 2004 were utilized to study the spatial and temporal variations of heat island and their relationships with land cover changes in Suzhou, a Chinese city which experienced rapid urbanization in past decades. Land cover classifications were derived to quantify urban expansions and brightness temperatures were computed from the TM thermal data to express the urban thermal environment. The spatial distributions of surface temperature indicated that heat islands had been largely broadened and showed good agreements with urban expansion. Temperature statistics of main land cover types showed that built-up and bare land had higher surface temperatures than natural land covers, implying the warming effect caused by the urbanization with natural landscape being replaced by urban areas. In addition, the spatial detail distributions of surface temperature were compared with the distribution of land cover by means of GIS buffer analysis. Results show remarkable show good correspondence between heat island variations with urban area expansions.
分类号: TP7
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