Objective  The change law of soil erosion will be revealed in Qianjiangyuan National Park from 2000 to 2019, as well as the differences in different functional zones and slope ranges.

  Method  Dynamic changes of soil erosion in Qianjiangyuan National Park from 2000 to 2019 were obtained based on the RUSLE model. Then the average simulated soil erosion rate of different functional zones and different slope ranges were analyzed.

  Result  The results showed that the simulated soil erosion rate of Qianjiangyuan National Park from 2000 to 2019 showed a linear decreasing trend. About 80% of the Qianjiangyuan National Park was slight erosion, and the area of slight erosion showed an increasing trend. The simulated soil erosion rate in 2008 was 424.83 t km⁻² a⁻¹, which was significantly higher than other years due to the snow disaster. The average simulated soil erosion rates of different functional zones were significantly different, with the order of Recreational Display area > Traditional Use area > Core Protection area > Ecological Conservation area. The soil erosion of the Core Protection area was almost not affected by the snow disaster. The simulated soil erosion rate of each slope range showed a decreasing trend year by year. There were no significant differences in the simulated soil erosion rates between the two slope ranges of 5°-8° and 8°-15°, and the average simulated soil erosion rates of other slope ranges had significant differences.

  Conclusion  The simulated soil erosion rates of the whole Qianjiangyuan National Park, each functional zone and each slope range show a linear decreasing trend. And the average simulated soil erosion rates differ significantly between different functional zones and between different slope ranges. This study can provide reference for soil erosion control and soil and water conservation measures planning in Qianjiangyuan National Park.