Simulation effect analysis of RUSLE model on slope soil erosion restored by reclaimed vegetation in Loess Plateau

1.NORTHWEST A&2.F UNIVERSITY;3.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources

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Coupling mechanism of road erosion and hydrological connectivity in a small watershed in the Loess Hilly-gully region

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    In order to explore the effect of RUSLE model on soil erosion simulation on the slope of reclaimed vegetation on the Loess Plateau, this study is based on the monitoring data of rainfall production and sediment loss of 10 runoff plots in Fangta small watershed of Ansai District, Northern Shaanxi Province during 2016-2022. Through the transformation combination of different commonly used algorithms of various factors of RUSLE model, In this paper, the soil erosion of the restored slope under the combination of 144 factors was simulated, and Nash efficiency coefficient NSE and root mean square error RMSE were used to evaluate the effectiveness of the model. The results show that: The RUSLE model was used to simulate soil erosion with 144 factors. The NSE coefficient of the returned farmland vegetation restoration slope ranged from -38.47 to 0.19, and the root mean square error RMSE ranged from 1.92 to 12.65 t/(hm2·a). The simulation effect of RUSLE model on the returned farmland vegetation restoration slope was poor. The existing factor algorithms are difficult to adapt to the evaluation of soil loss on the slope of vegetation restoration, so it is necessary to further improve the factors of RUSLE model.

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  • Received:April 20,2023
  • Revised:June 08,2023
  • Adopted:July 17,2023
  • Online: January 16,2024
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