Quantitative modeling of soil erosion by water in large-scale river basin using remotely sensed data

Although RUSLE is used widely in United States and worldwide, it is limited in the application on large scale area, because of it´s conventional parameterization methods. In this paper, a water erosion model based on remote sensing and GIS-(Revised RUSLE, R²USLE model) will be developed to resolve the problem of erosion assessment at catchment-scale. It can be used to do event-based soil erosion evaluation as well as the moth or year evaluation. In this model, multi-sourced remotely sensed data and geographic information tools will be used together. The application in Daling river basin shows that R²USLE is good tool to estimate the soil erosion and sediment yield in large river basin scale, but it emphasis the erosion in high degree.