基于COST模型的热岛效应时空演变特征分析  

Analysis on spatial and temporal variation of urban heat island effect based on COST model

作　　者：李海峰[1,2] 郭科[1] 但尚铭[3] 卢正[2] 许辉熙[2] 

机构地区：[1]成都理工大学,成都610059 [2]四川建筑职业技术学院测量工程研究所,四川德阳618000 [3]四川省农业气象中心,成都610072

出　　处：《测绘科学》2012年第2期164-166,共3页Science of Surveying and Mapping

基　　金：四川省环境保护局资助项目(2008HBY002;2010HBY003);数学地质四川省高校重点实验室资助项目(SCSXDZ2009018);四川建筑职业技术学院资助项目

摘　　要：本文选取中等城市绵阳为研究对象,以2000年、2007年TM/ETM+遥感影像为数据源,首先应用COST模型完成大气校正;然后采用Artis等提出的算法进行地表温度反演,并利用均值标准差法进行温度等级划分,获得绵阳市地表温度分布图和温度等级分布图。结果表明:①2000-2007年热岛区与建成区在空间发展趋势上基本一致,其中2000年热岛区面积为11.49 km2,到2007年增加为43.12 km2,热岛区面积所占比例增加36.36%;②7年间温度等级升高的区域面积为56.09km2,占建成区总面积的64.47%,其中从温度较低区转化为热岛区比例占42.40%。Taking Mianyang City as the study area and the TM/ETM ＋ images of 2000 and 2007 as the data source, first of all, the author used the COST model to correct atmosphere, and then applied the algorithm proposed by Artis to calculate the land surface temperature（ LST）, at last, mean-standard deviation method was also used to divide temperature rating, so as to obtain the LST maps and the LST rating maps. The result showed that： （1）from 2000 to 2007, the built-up area and the area of urban heat island had the same trends in the space, the heat island area was about 11.49 km2 in 2000, and the figure added up to 43.12 km2in 2007, the heat island area increased 36. 36% ; （2）during the past seven years, the regional area of the increased temperature level is 56. 09km2, it took up 64. 47% of the total urban built-up area, the proportion from the lower temperature zone to the heat island area was about 42. 40%_

关 键 词：辐射定标 COST大气校正模型 地表温度反演 热岛效应 绵阳市 

分 类 号：P208[天文地球—地图制图学与地理信息工程]