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[1]ZHANG Xin,CAI Huan-jie.Assessment of Ecological Vulnerability Based on Set Pair Analysis in Typical Loess Plateau Watershed[J].Research of Soil and Water Conservation,2010,17(04):96-99.

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Assessment of Ecological Vulnerability Based on Set Pair Analysis in Typical Loess Plateau Watershed

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 04 Page number: 96-99 Column: Public date: 2010-08-20

Title:: Assessment of Ecological Vulnerability Based on Set Pair Analysis in Typical Loess Plateau Watershed

Author(s):: ZHANG Xin, CAI Huan-jie; College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: Loess plateau; set pair analysis; basin; ecological vulnerability

CLC:: X171.1

DOI:: -

Abstract:: An important basis is provided ecological vulnerability assessment for ecologically fragile watershed ecosystem economic systems restoration and reconstruction.Based on an analysis of the Impact factors on the ecological vulnerability in the basin,an ecological fragility assement index system is built to consider the causes and the results of manifestations in JiaLu river basin,and the quality of the population and other cultural information is contained in the index system of ecological fragility.The set pair analysis method is utilized to evaluate the ecological vulnerability in contrast to the first method in JiaLu River basin.The results show that: when i=0,μ（A，B_Ⅰ) of the largest connection degree is equal to 0.5,indicating the ecological vulnerability of the basin is highly vulnerable state; when i=(a-c)/(a+c),whether a,c take what the value,μ（A，B_Ⅱ) as a constant,using inter-stage evaluation of comparison,the value of μ（A，B_Ⅰ) than the μ（A，B_Ⅲ) closer to μ（A，B_Ⅱ),the ecological vulnerability that is in between Ⅰ~Ⅱ in JiaLu River Basin,at a relatively high vulnerability state.The Set Pair analysis is an calculation convenient method with simpleness and judge the results of objective,rational characteristics to compare with the first method,a new way is provided for a comprehensive assessment of watershed ecological vulnerability.

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