Evaluating Soil Erosion Based on RUSLE Model in Three Gorges Reservoir Area During 2000-2010
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    Abstract:

    [Objective] The aim of this study is to investigate the soil erosion degree in the Three Gorges Reservoir area in order to provide the basis for regional soil erosion control.[Methods] The revised universal soil loss equation (RUSLE) model was used in conjunction with MODIS-NDVI data, DEM elevation data and land use classification data to evaluate the spatial distribution of soil erosion quantitatively in Three Gorges Reservoir area from 2000 to 2010.[Results] ① Soil erosion in Three Gorges Reservoir area was severe except for the western regions during the period from 2000 to 2010. Soil erosion in Yangtze River was dominated by severe and extreme intensity erosion. ② Soil erosion in Three Gorges Reservoir area was improved from 2000 to 2010, and the area of intensive soil erosion was decreased from 1.71×106 hm2 in 2000 to 6.82×105 hm2 in 2010. Average soil erosion modulus decreased from 36.75 t/(hm2·a) in 2000 to 22.79 t/(hm2·a) in 2010. ③ After years of erosion control, the area of intensive, severe and the extremely intensive soil erosion decreased, while the area of mild and moderate soil erosion increased.[Conclusion] Mild and moderate intensity soil erosion control need to be enhanced in the study area.

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王萌,刘云,宋超,李春蕾,肖文发.基于RUSLE模型的2000-2010年长江三峡库区土壤侵蚀评价[J].水土保持通报英文版,2018,38(1):12-17

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History
  • Received:August 02,2017
  • Revised:August 17,2017
  • Adopted:
  • Online: March 08,2018
  • Published: