DEM correction using TVDI to evaluate soil moisture status in China
DAN Qiong-；Zhang-Ceng-Xiang-；Zhang-Guo-Beng-；Zhou-Quan-Bin
1.Institute of Remote Sensing Applications, CAS, 100101; 2.National Satellite Meteorological Center, Chinese Meteorological Administration, 100081:
Beijing, China
Abstract：The factors that affect the retrieval of soil moisture status using TVDI method are discussed. Considering the geographical characteristics in China, a method of correcting t s with DEM before constructing ts-NDVI space is suggested. Measured topsoil moisture from around China is used to determine the parameter in the correction. Comparison between the TVDI obtained before and after the correction shows that the TVDI obtained after DEM correction can better reflect the spatial distribution of soil moisture in China.
冉琼1；张增祥1；张国平2；周全斌1. 温度植被干旱指数反演全国土壤湿度的DEM订正[J]. 中国水土保持科学, 2005, 3(2): 32-36.
DAN Qiong-；Zhang-Ceng-Xiang-；Zhang-Guo-Beng-；Zhou-Quan-Bin. DEM correction using TVDI to evaluate soil moisture status in China. SSWCC, 2005, 3(2): 32-36.
2005, Vol. 3 
