Mapping soil degradation by topsoil grain size using MODIS data
- Publisher: Chiba University. Center for Environmental Remote Sensing
Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集,
[ABSTRACT] MODIS BRDF reflectance data at the end of April 2004 was selected to make a desertification map base on topsoil grain size by using Gain Size Index at arid and semiarid Asia. After data processing, GSI was applied into desertification mapping, and we find that high GSI area distributed at the desert and its’ marginal area, degraded grassland, desert steppe. The desertification map was output according to the correlation between GSI and grain size distribution, the classification of desertification is no desertification, light desertification, middle desertification, and severe desertification. The result can manifest the soil degradation very well.