Spatial Distribution of Aeolian Erosion of Soil and Its Driving Factors in China
Based on the remote sensing and geographic information system,the spatial distribution of national wide soil erosion of wind are studied, and the 1:100 000 national soil map of wind erosion is made. Wind speed, soil dryness, NDVI, soil property and land surface slope are the key factors to the soil wind erosion. The relations between the soil wind erosion and each factor are discussed. The method of Principal Component is used to pick up the information included in the five factors, and the Soil Wind Erosion Dynamic Index (SWEDI) is established. Its comparison with the RS/GIS derived data shows that SWEDI can reflect the potential capacity of the soil erosion by wind. The dynamic process of soil wind erosion is studied, to reveal the distribution of the most intense heaviest soil erosion regions and the dominant factors in these regions. All these studies may greatly help for the mitigation of the aeolian erosion of soil.
NETL
NSTL
万方数据
维普
