Construction the correlation equation for empirical of erosion (apply for Duoi Sap and Phieng Hieng basin in Son La province)

Abstract

     Soil detachment by raindrop impact depends on many parameters and there are also many parameters involving in the formation of sediment transport in the watershed. For each type of soil, there are specific coefficients of soil erosion, inter-rill and rill erosion because they have different physical and chemical properties. Sensitivity analysis method is used to show which parameters are most important, and vice versa in the process of calculating rill and interrill erosion in the watershed.