摘要
运用遥感技术进行干旱监测具有不可替代的优势 ,我国近年来在此领域做了不少的探索和研究。本文根据各种遥感干旱监测方法的特点 ,将其归纳为 :基于土壤热惯量的方法 ,基于区域蒸散量计算的方法 ,基于植被指数和温度的方法以及基于土壤水分光谱特征的方法等五类 ,分别介绍了我国利用遥感技术进行干旱监测的主要方法及其进展。
Remote Sensing technique has superiority in drought monitoring. In last years many researches in this area have been developed in china. In this paper, the national main methods of drought monitoring by VIS/NIR/FIR bands of remote sensing was classified into five types based on their own characteristics such as: the methods based on soil thermal inertia, calculation of regional evapotranspiration, vegetative cover index and temperature, and feature of soil water contents spectrum, and so on, The basical theories of them were also summarized,as well as some simple comments are given. It shows that remote sensing has played an important role in drought monitoring, but there are also some problems in practical using.
出处
《遥感信息》
CSCD
2005年第1期55-58,31,共5页
Remote Sensing Information
基金
国家 8 63计划数字农业重大专项 2 0 0 3AA2 0 90 40课题资助
