SOIL MOISTURE STATUS ESTIMATION OVER THREE GORGES AREA WITH LANDSAT TM DATA BASED ON TEMPERATURE VEGETATION DRYNESS INDEX
Soil moisture is the important indicator of climate, hydrology, ecology, agriculture and other parameters of the land surface and atmospheric interface. Soil moisture plays an important role on the water and energy exchange at the land surface/atmosphere interface. Remote sensing can provide information on large area quickly and easily, so it is significant to do research on how to monitor soil moisture by remote sensing. This paper presents a method to assess soil moisture status using Landsat TM data over Three Gorges area in China based on TVDI. The potential of Temperature– Vegetation Dryness Index (TVDI) from Landsat TM data in assessing soil moisture was investigated in this region. After retrieving land surface temperature and vegetation index a TVDI model based on the features of Ts-NDVI space is established. And finally, soil moisture status is estimated according to TVDI. It shows that TVDI has the advantages of stability and high accuracy to estimating the soil moisture status.
Soil moisture Landsat TM TVDI Ts-NDVI Space
Lina Xu Ruiqing Niu Jiong Li Yanfang Dong
China University of Geosciences, Wuhan 430074, China School of Remote Sensing and Information Engine China University of Geosciences, Wuhan 430074, China Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China
国际会议
桂林
英文
1-6
2011-11-01（万方平台首次上网日期，不代表论文的发表时间）