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[1]CAI Wen-bo,CAI Yong-li.GIS-Based Assessment on the Sensitivity of Soil and Water Loss in Lugu Lake Watershed[J].Research of Soil and Water Conservation,2014,21(03):79-83.

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GIS-Based Assessment on the Sensitivity of Soil and Water Loss in Lugu Lake Watershed

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 03 Page number: 79-83 Column: Public date: 2014-06-28

Title:: GIS-Based Assessment on the Sensitivity of Soil and Water Loss in Lugu Lake Watershed

Author(s):: CAI Wen-bo, CAI Yong-li; Shanghai Key Laboratory of Ecology of Urbanization Process and Eco-restoration, Department of Geography, East China Normal University, Shanghai 200241, China

Keywords:: soil and water loss sensitivity; Lugu Lake watershed; GIS

CLC:: S157

DOI:: -

Abstract:: There are many rare alpine species and a unique matriarchal culture (the special Mosuo culture) in the Lugu Lake Watershed. Lugu Lake is a deep alpine fresh water lake with first class water quality. However, with the rapid development of tourism, the risk of soil and water loss has begun to be found. In this study, land use types, soil types, gully density and geographic gradient were selected as indicators used to assess the soil and water loss sensitivity. Based on RS and GIS technology, the spatial distribution of the soil and water loss sensitivity of the Lugu Lake Watershed was studied. The results show that 52.61% of the watershed is insensitive and slightly sensitive, 38% of the watershed is moderate sensitive and 9.39% of the watershed is strong sensitive or extremely sensitive. There are significant differences in the spatial distribution of the soil and water loss sensitivity in the Lugu Lake Watershed and the strong and extreme soil and water sensitive areas mainly distributed around the lake. The change of the land cover caused by human activities (such as road construction and farming) and the easily eroded soil are the important impact factors on local high soil and water sensitivity. Our study provides useful references for the prevention and control of soil and water loss and the ecological conservation in the Lugu Lake Watershed.

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