Estimating Method of Regional Evapotranspiration over South Ningxia Using Satellite Remote Sensing Data

It is a very complicated problem to estimate evapotranspiration (ET) over a large area natural surface.Based on the information of satellite remote sensing and geography,the natural surface is divided into 6 categories,and then the evapotranspiration for each category is calculated.By analyzing the satellite remote sensing and weather station data,the result of regional evapotranspiration over south Ningxia is given,and the result is also analyzed and verified.