بررسی قابلیت استفاده از نقشۀ واحدهای خاک به‌منظور برآورد تغییرات مکانی فاکتور فرسایش‌پذیری خاک

Soil erodibility is one of the six components affecting water erosion of the universal soil loss equation (USLE). K-factor ‎is best obtained from direct measurements on natural plots. This is an infeasible task on large scales. To overcome this ‎problem measured K-factor values have been related to soil properties and the soil classification maps are used. The ‎current research examines the ability of the soil maps for calculation of erodibility factor in the watershed scale. This ‎subject was followed by investigation of difference of erodibility components among the soil types of Darabkola ‎Watershed. Also, geostatistical technique with Kriging method are used for representation of the spatial distribution of ‎K-factor. Results showed that among the K-factor components, percent of silt, structure class and permeability had ‎significant difference between some of soil types, and other components and K-factor didn’t have significant ‎difference. In conclusion any coincidence seemed between erodibility map and soil types map.