Abstract: The data from Soil types dataset of Sichuan is based on the Second National Soil Survey, China Science Publishing in 1994, is one of the summary of Sichuan land resources survey. The primary coverage of Soil types database including the distribution of soil type, the area, the main characters, the land-use and the product performance. On the basis of a series of standardization work, an data model was constructed which included the relation between location and soil type, and the classification relation according to Genetic Soil Classification of China. It results in a data product which contains 25 groups, 63 subgroups , 380 typical profiles, and 1162 soil horizons and physical chemical properties. The dataset is widely used for land degradation assessments, environmental impact studies, soil carbon reserves studies, and as a soil-based data to guide agricultural production.
Keywords: Sichuan; Chongqing; soil type; second national soil survey