基于TVDI的广西干旱遥感监测研究

干旱是世界上广为分布的自然灾害,位于中国南部的广西地处低纬度,也经常受到干旱的困扰。目前广为应用的用以评价干旱情况的温度植被干旱指数(TVDI)仍存在算式易饱和、空间拟合不准确及具有时间局限性的缺点。针对以上问题利用MODIS数据,在温度植被干旱指数(TVDI)的基础上进一步进行干旱监测的方法探究。

Drought monitoring in Guangxi Based on TVDI

As a natural disaster, the drought is wide spread around the world. Guangxi is located in the low latitude where the drought often happens .The TVDI is the most widely used way to measure the grade of drought, but it still exists many problems. Such as the formula can be easily saturated, the space fitting is inaccurate, and the problem of time limitations. To solve the problems above, we will use MODIS product to do more explore based on TVDI, so we can find a better way to monitor the drought.