中文摘要：

研究一种基于MODIS遥感数据的快速且易于实际应用的农业旱情监测方法及其系统实现。监测方法基于植被供水指数的思想，利用NDVI进行植被盖度分级来计算，标准化作物供水指数，再耦合近8旬的综合降水距平指数，由此实现对旱情的监测。在介绍监测方法的同时，又针对应用数据的特点，设计了有效的数据管理系统，为高效管理各种数据而服务。

英文摘要：

Objective of the study is to develop a system of crop drought monitoring using MODIS data. The system is based on the improved method of vegetation water index of drought monitoring. Using NDVI classification and considering the drought affection from red, near infrared and thermal infrared bands, we improve the vegetation water supply index into a drought index to reflect the actual drought condition in a regional scale. An operational system based on the method has been designed to process and manage all data required for the drought index computation in order to provide a quick monitoring of crop drought distribution in entire China.