The two main types of **data** used in this study are spatial **data** and statistical yearbook data. Spatial Data. (1) Administrative boundary vector **data** of Three Gorges Reservoir area (SHP format). (2) Soil dataset provided by Harmonized World Soil Database (HWSD) and Cold Arid Regions, Available online: http://www.westdc.westgis.ac.cn (accessed on 17 April 2019), which contains the spatial coordinates and properties of the soil (GRID format).