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Position: Home > Articles > Comparative Research on Different Methods of Drought Remote Sensing Monitoring Based on MODIS in Sichuan Province Hubei Agricultural Sciences 2015 (9) 2097-2101

基于MODIS的四川省干旱遥感监测不同方法的比较

作  者:
姚丹丹;苗放;陈军
单  位:
成都理工大学地质灾害防治与地质环境保护国家重点实验室;成都信息工程学院资源环境学院;成都理工大学地球探测与信息技术教育部重点实验室
关键词:
干旱;MODIS;温度植被干旱指数法;植被供水指数法;温差植被干旱指数法
摘  要:
针对四川省干旱的特点,以中分辨率成像光谱仪(MODIS)数据为基础,选择温度植被干旱指数法(TVDI)、植被供水指数法(VSWI)、温差植被干旱指数法(DTVDI)三种算法进行比较。首先对数据进行预处理,获取指数信息和地表温度信息,然后利用获取的信息进行分析与计算,最后将这三种方法的干旱指标与实测土壤含水量进行线性相关分析,得到最适合四川省的干旱遥感监测算法。结果表明,TVDI的效果最好,DTVDI和VSWI次之。
译  名:
Comparative Research on Different Methods of Drought Remote Sensing Monitoring Based on MODIS in Sichuan Province
作  者:
YAO Dan-dan;MIAO Fang;CHEN Jun;Key Laboratory of Earth Exploration & Information Techniques of Ministry of Education, Chengdu University of Technology;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology;College of Resources and Environment,Chengdu University of Information Technology;
关键词:
drought;;MODIS;;TVDI;;VSWI;;DTVDI
摘  要:
According to the characteristics of the drought in Sichuan province, three algorithms were chosen to compare based on the moderate-resolution imaging spectroradiometer(MODIS) data, they were temperature vegetation dryness index method(TVDI), vegetation supply water index method(VSWI) and difference temperature vegetation dryness index method(DTVDI).Data was preprocessed to get the index information and the surface temperature information, and then the information was used for analysis and calculation. At last, linear correlation was analyzed between the drought indexs of the three methods and the measured soil moisture content, in order to get the optimal drought remote sensing monitoring algorithm which was the most suitable method for Sichuan province. The results showed that, TVDI was better than DTVDI and VSWI.

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