土地覆盖类型对城市热岛效应的响应分析  

Response Analysis of Land Cover Types on Urban Heat Island Effect

作　　者：裔传祥 胡继超[1] 李小军 

机构地区：[1]南京信息工程大学应用气象学院,江苏南京210044 [2]中国科学院遥感与数字地球研究所遥感科学国家重点实验室,北京100101

出　　处：《测绘通报》2018年第1期72-76,116,共6页Bulletin of Surveying and Mapping

基　　金：国家自然科学基金(41371360)

摘　　要：利用夏季MODIS地表温度和土地覆盖产品,结合Landsat等辅助遥感数据,分别提取济南、武汉、重庆3个城市2003年、2008年、2013年的土地覆盖与地表温度信息,确定3个城市不同年份的热岛效应等级分布。在此基础上,对济南、武汉、重庆这3个城市的地表温度分布特征、热岛效应等级分布特征与土地覆盖类型各因子之间的关系展开分析。结果表明:城市用地是城市热岛的主要贡献因素,相关系数达到0.42;最能缓解城市热岛效应的是林地,平均相关系数为-0.41;3个城市中最能缓解城市热岛效应的土地覆盖类型并不完全相同:济南市为林地和耕地,武汉市为水体,重庆市为林地。This paper uses MODIS surface temperature data and land cover products in summer, combines with Landsat and other remote sensing data to extract the information of land cover and land surface temperature in Jinan, Wuhan and Chongqing in 2003, 2008,2013, to determine the distribution of heat island grades in the three cities in different years. On this basis, it analyzes the relationship between the characteristics of land surface temperature, the distribution of heat island and the factors of land cover types in Jinan, Wuhan and Chongqing. The resuhs show that urban land use is the main contributing factor of urban heat island, and the correlation coefficient is 0.42.The most effective way to alleviate the urban heat island effect is forest land, and the average correlation coefficient is -0.41.The best land type to alleviate the urban heat island is not exactly the same in three cities： Jinan＇s is forest land and cultivated land,Wuhan＇ s is water,Chongqing＇ s is forest land.

关 键 词：城市热岛 土地覆盖 MODIS 地表温度 

分 类 号：P237[天文地球—摄影测量与遥感]