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《Journal of University of Science and Technology Beijing》 2010-02
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Delimitation of water conservation areas in the upper Yangtze River and analysis of influencing factors on eco-security

DONG Wei 1,2), JIANG Zhong-an 1), SU De 2), GAO Ji-xi 2) 1) School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China 2) Chinese Research Academy of Environmental Sciences,Beijing 100012,China  
In order to partition water conservation areas in the upper Yangtze River,inner and external indexes in an ecosystem were used to constructed a delimitation index system,and the key water conservation areas were delimitated by the delimitation model in combination with the ArcGIS Spatial Analyst.Based on the actual situation of research areas,a multi-level and multi-structure index system for eco-security assessment was built with the PSR (pressure-state-response) model framework.Eco-security assessment of the key water conservation areas was carried out by a combined application of AHP (analytic hierarchy process),vector similarity and principal component projection method.Gray correlation was added in finding out the main influencing factors on regional eco-security.The results show that these main factors are rainfall,increase rate of GDP,effective utilization rate of water resources,vegetation coverage,and water environmental quality.
【Fund】: 联合国环境规划署UNEP资助项目(No.IMIS:GFL-2328-2740-4822)
【CateGory Index】: X143
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