摘要
利用我国新发射的环境一号小卫星数据,以2010年3月26日环境一号卫星的红外波段为例,尝试根据同步MODIS数据反演大气水汽含量参数,采用Jimenez-Munoz和Sobrino的普适性单通道算法反演地表温度,经MODIS地表温度产品验证,地表温度反演精度满足要求.将人工目视解译的2009年太湖流域土地利用、地表温度和归一化植被指数作相关性分析.结果表明:当林地和农田、草地植被指数相同时,林地的地表温度比农田和草地低,因此林地比农田和草地的调节温度效果好,在城市中增加林地的面积,对缓解城市热岛效应的作用最大.
Based on thermal infrared images of the Taihu Lake Basin taken by the newly-launched HJ-1 satellite on March 26,2010,atmospheric moisture content was inverted using synchronous modis data,and land surface temperature（LST） was inverted with the generalized single-channel algorithm（Jimenez-Munoz Sobrino,2003）.LST could satisfy the accuracy requirement,as validated by using the temperature product of MODIS.Correlation analysis between artificial visual interpreting LST,Normalized Difference Vegetation Index（NDVI） and land use data of the Taihu Lake Basin in 2009 indicated that LST of forest was lower than that of farmland and grassland when the vegetation index of forest was same as that of farmland and grassland.Forest had better a temperature regulating effect compared with farmland and grassland.Increase of forest area in cities could effectively alleviate the urban heat island effect.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2011年第11期1291-1296,共6页
Research of Environmental Sciences
基金
国家"十一五"科技支撑计划重点项目(2008BAC34B07-03
2008BAC34B01-2)
国家水体污染控制与治理科技重大专项(2008ZX07528-005)
关键词
地表温度
归一化植被指数
环境一号卫星
太湖流域
land surface temperature
Normalized Difference Vegetation Index
HJ-1 satellite
Taihu Lake Basin
