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

WANG Meng; LIU Yun; SONG Chao; LI Chunlei; XIAO Wenfa

doi:10.13961/j.cnki.stbctb.2018.01.003

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

- Evaluating Soil Erosion Based on RUSLE Model in Three Gorges Reservoir Area During 2000-2010
- Bulletin of Soiland Water Conservation Vol. 38, Issue 1, Pages: 12-17(2018)
- 作者机构：
  
  1. 北京农学院北京林果业生态环境功能提升协同创新中心,北京,102206
  2. 中国林业科学研究院森林生态与环境保护研究所,北京,100000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2018.01.003
  CLC：
- Published：2018
- 稿件说明：
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WANG Meng, LIU Yun, SONG Chao, et al. Evaluating Soil Erosion Based on RUSLE Model in Three Gorges Reservoir Area During 2000-2010[J]. Bulletin of Soiland Water Conservation, 2018, 38(1): 12-17.
DOI：

WANG Meng, LIU Yun, SONG Chao, et al. Evaluating Soil Erosion Based on RUSLE Model in Three Gorges Reservoir Area During 2000-2010[J]. Bulletin of Soiland Water Conservation, 2018, 38(1): 12-17. DOI： 10.13961/j.cnki.stbctb.2018.01.003.

摘要

[目的

]

探究三峡库区土壤侵蚀程度，为区域土壤侵蚀合理化治理提供依据。[方法

]

采用RUSLE模型，结合多源数据（MODIS-NDVI，DEM，土地利用等），定量评价长江三峡库区2000-2010年的土壤侵蚀时空分布。[结果

]

①三峡库区除西部地区外，其它地区土壤侵蚀情况严重；2000-2010年，长江沿岸以剧烈侵蚀和极强度侵蚀为主；②三峡库区土壤侵蚀状况在2000-2010年间得到一定程度的改善，强度以上土壤侵蚀面积由2000年的1.71×10

下降为2010年的6.82×10

；库区内平均侵蚀模数由2000年的36.75 t/（hm

·a）下降为2010年的22.79 t/（hm

·a）；③三峡库区经过多年侵蚀治理，强度、极强度、剧烈侵蚀面积逐渐减少的同时，轻度、中度土壤侵蚀面积在逐渐增加。[结论

]

研究区需要进一步加强对轻度、中度土壤侵蚀的治理。

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.

关键词

Keywords

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