Research on Soil Erosion in Karst Area Based on GIS and RUSLE Model——A Case Study in Guizhou Province

SUN Deliang; ZHAO Weiquan; LI Wei; WU Jianfeng; YANG Zhenhua; LYU Sisi

doi:10.13961/j.cnki.stbctb.2016.03.047

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Research on Soil Erosion in Karst Area Based on GIS and RUSLE Model——A Case Study in Guizhou Province

- Research on Soil Erosion in Karst Area Based on GIS and RUSLE Model——A Case Study in Guizhou Province
- Bulletin of Soiland Water Conservation Vol. 36, Issue 3, Pages: 271-276(2016)
- 作者机构：
  
  1. 重庆师范大学地理与旅游学院 GIS应用研究重庆市高校重点实验室,重庆,400047
  2. 贵州科学院山地资源研究所,贵州,贵阳,550004
  3. 贵州师范学院地理与旅游学院,贵州,贵阳,550018
  4. 贵州师范大学喀斯特研究院,贵州,贵阳,550001
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.03.047
  CLC：
- Published：2016
- 稿件说明：
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SUN Deliang, ZHAO Weiquan, LI Wei, et al. Research on Soil Erosion in Karst Area Based on GIS and RUSLE Model——A Case Study in Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2016, 36(3): 271-276.
DOI：

SUN Deliang, ZHAO Weiquan, LI Wei, et al. Research on Soil Erosion in Karst Area Based on GIS and RUSLE Model——A Case Study in Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2016, 36(3): 271-276. DOI： 10.13961/j.cnki.stbctb.2016.03.047.

摘要

［目的］对贵州省土壤侵蚀进行快速定量研究，为土壤侵蚀治理工作和土地利用决策提供科学依据。［方法］在GIS技术的支持下，利用日降雨量、土壤类型、土地利用、DEM，MODIS-NDVI等数据，结合RUSLE模型估算研究区土壤侵蚀量。［结果］研究区的2010年年均土壤侵蚀模数为880.81 t/（km

·a），属轻度侵蚀。大部分区域主要以小于500 t/（km

·a）的微度侵蚀为主，占研究区总面积的59.60%。土壤侵蚀面积（轻度侵蚀以上）达71 164.14 km

，占总面积的40.40%。强度以上土壤侵蚀面积达10 431.60 km

，占总面积的5.91%，主要分布在研究区西北部和东北部，以及北部大楼山、武陵山、东南部苗岭以及西部乌蒙山等地势较高以及中东部乌江，西南部北盘江等河流流域。［结论］林地、耕地和草地以及海拔在600～1 600 m之间的区域是今后水土流失防治的重点区域。

Abstract

[Objective] A rapid and quantitative study has been done on soil erosion in Guizhou Province in order to provide scientific basis for the management of soil erosion and land use decision.[Methods] With the support of GIS technology and data on the rainfall

soil type

land use

DEM and MODIS-NDVI

we used RUSLE model to estimate of soil erosion.[Results] The annual average soil erosion modulus of the study area was 880.81 t/km2

which belongs to mild erosion. Most area belongs to the micro erosion with soil erosion modulus less than 500 t/(km2·a)

which accounted for 59.60% of the total study area. Soil erosion area(above the mild erosion) reached 71 164.14 km2

which accounted for 40.40% of the total area. The area above strong erosion level was 10 431.60 km2

which accounted for 5.91% of the total area and mainly distributed in the northwest and northeast of the research area

and in the Northern Dalou Mountain

Wuling Mountain

Southeastern Miaoling Mountain and Western Wumeng Mountain with high altitude and middle east of Wujiang River

southwest of North Panjiang and other river basins.[Conclusion] Woodland

farmland

grassland and region between elevation of 600~1 600 m is the key area for soil and water conservation in the future.

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