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《Journal of Anhui Agricultural Sciences》 2009-19
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Assessment on the Eco-environmental Vulnerability of Anding Area in Dingxi City of Gansu Province

LI Dong et al (Forestry College,Gansu Agricultural University,Lanzhou,Gansu 730070)  
[Objective] The study aimed to judge the ecological vulnerability level in in Anding Area in Dingxi City.[Method] With he Anding Area as the reaearch object,18 factors from the three aspects of resource-environmental condition,socio-economic level and the degree of ecological balance were selected as the evaluating factors to build the evaluation index system,so as to quantitatively evaluate the ecological environment in the Anding Area.The combination of AHP and the mean square difference method was used to confirm the index weight and then calculate the degree of eco-environment vulnerability.[Result] The index of ecological vulnerability in Anding Area had an descending trend in fluctuation with time since the ecological governance of this area in the 90's,decreasing from 0.713 2 in 1993 to 0.2 868 in 2003.Anding Area first went thought the middle vulnerability stage in 1993,and then went into relative stable stage of general vulnerability in 1999 and lastly changed over no vulnerability stage,so its eco-environment developed toward the good stage.Based on the evaluation results,some countermeasures and suggestions were provided on the construction of eco-environment.[Conclusion] The evaluation results obtained by the index system evaluation accorded for the actual instance,which provided a scientific basis for the ecological building in this area in the future.
【Fund】: 甘肃省自然科学基金暨中青年科技基金项目(3ZS061-A25-011);; 中国-全球环境基金项目
【CateGory Index】: X826
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