环境减灾卫星数据在干旱监测中的应用  

Application of HJ-1 Satellite Data in Drought Monitoring

作　　者：钟仕全[1] 罗永明[1] 莫建飞[1] 贾德伟[2] 

机构地区：[1]广西壮族自治区气象减灾研究所/国家卫星气象中心遥感应用试验基地,南宁530022 [2]广西师范学院,南宁573001

出　　处：《中国农业气象》2011年第4期593-597,共5页Chinese Journal of Agrometeorology

基　　金：广西科学研究与技术开发计划项目"基于3S的广西重大农业气象灾害监测预警技术研究与开发"(桂科攻0816006-8)

摘　　要：环境减灾卫星是首个以防灾减灾和环境监测为直接应用目标的小卫星星座。本文尝试利用环减星HJ-1B上的CCD相机的红光和近红外波段计算归一化植被指数,用IRS光谱仪热红外波段反演地表温度,采用植被供水指数建立干旱监测模型。通过对2010年初广西隆林、田林、西林3县的干旱情况的遥感监测研究,结果表明:遥感干旱监测结果与旱情实况分布基本一致。说明该方法比较可靠,再加上环减星重访周期短、空间分辨率高,据此可以为广西抗旱救灾工作提供快速准确的信息服务。HJ-1 is the first small satellite constellation which dedicated to environment and disaster monitoring and forecasting in China.The land surface temperature（LST） over the arid regions were calculated by using the China Centre for Resources Satellite Data and HJ-1B data,and the vegetation supply water index（VSWI） was obtained by fitting method with the aid of the normalized difference vegetation index（NDVI） of different underlying surface.Drought monitoring was studied by using VSWI in Longlin county,Tianlin county and Xilin county.The results showed that drought monitoring with the aid of HJ-1B data was a credible way.HJ-1 was wide image width and relative high spatial resolution,which could provide decision support services for drought monitoring.

关 键 词：环境减灾卫星 干旱监测 广西 

分 类 号：S423[农业科学—植物保护]