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[1]LIU Nan,XIE Yong-sheng,SUO Gai-di,et al.Identification of Critical Non-point Source Pollution Areas in Dongbeigou Watershed Based on GIS and MUSLE[J].Research of Soil and Water Conservation,2014,21(02):123-126.

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Identification of Critical Non-point Source Pollution Areas in Dongbeigou Watershed Based on GIS and MUSLE

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 02 Page number: 123-126 Column: Public date: 2014-04-28

Title:: Identification of Critical Non-point Source Pollution Areas in Dongbeigou Watershed Based on GIS and MUSLE

Author(s):: LIU Nan¹, XIE Yong-sheng^1,2, SUO Gai-di¹, JING Min-xiao¹, CHEN Lei²; 1. Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: non-point pollution; critical areas; GIS; MUSLE

CLC:: X171.5;TP79

DOI:: -

Abstract:: Based on DEM and the survey data of land use and soil of Dongbeigou watershed, this paper combined GIS and MUSLE model to identify the critical non-point source pollution areas, and then graded the areas. The results showed that: (1) in descending order, the critical areas were ranged as low risk area, high risk area and moderate risk area. The critical areas mainly distributed along the river; (2) among the critical areas, the agricultural land took 37.3 percent of total agricultural land in the watershed, the proportion of the agricultural land increased significantly as the risk level upgraded, the agricultural lands distributing along the river were the main sources of the pollution, which was in accord with actual situation. The result can provide the basis for further pollution control. Combined with GIS technology, MUSLE model can rapidly identify the critical non-point source pollution areas. This method is scientific and reasonable, and it is of strong adaptability.

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