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[1]ZHANG Tong-yan,HE Jing-ying,LI Guang-lu,et al.Method of Watershed Landscape Pattern Analysis Based on the Risk of Soil and Water Loss[J].Research of Soil and Water Conservation,2012,19(03):175-179,184.

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Method of Watershed Landscape Pattern Analysis Based on the Risk of Soil and Water Loss

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 03 Page number: 175-179,184 Column: Public date: 2012-06-20

Title:: Method of Watershed Landscape Pattern Analysis Based on the Risk of Soil and Water Loss

Author(s):: ZHANG Tong-yan¹, HE Jing-ying¹, LI Guang-lu¹, ZHU Shou-jun¹, ZHOU Mao-ling²; 1. College of Resources and Environmental Science, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Soil and Water Conservation Working Station of Yangxian, Yangxian, Shaanxi 723300, China

Keywords:: landscape pattern; risk of soil and water loss; location-weighted landscape contrast index; Danjiang River watershed

CLC:: Q143

DOI:: -

Abstract:: Based on Source-sink principle and Lorentzian curve, this paper analyzed the landscape pattern of nine watersheds in Danjiang River Basin and constructed landscape slope index and location-weighted landscape contrast index. The results showed that the landscape in the watersheds of the northern basin was dominated by soil water loss ‘source’ landscape with bigger landscape slope index and smaller location-weighted landscape contrast index.The risk of soil water loss in those watersheds was very high.The landscape of the upper watersheds in the southern basin was dominated by ‘sink’ landscape with bigger landscape slope index, while ‘source’ landscape was dominated in the down reach. The distributions of ‘source’ and ‘sink’ landscapes were uneven in the watersheds, which made a higher risk of soil water loss.

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