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《亚洲农业研究(英文版)》 2010-02
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Ecological Safety Evaluation of Land Use in Ji'an City Based on the Principal Component Analysis

LIU Fei-yue1,2,WAN Shao-kai3* 1.Guangzhou Institute of Geochemistry,Guangzhou 510640,China;2.Graduate University of China Academy of Sciences,Beijing 130039,China;3.Department of Economics and Trade,Jiangxi Blue Sky University,Nanchang 330098,China  
According to the ecological safety evaluation index data of land-use change in Ji'an City from 1999 to 2008,positive treatment on selected reverse indices is conducted by Reciprocal Method.Meanwhile,Index Method is used to standardize the selected indices,and Principal Component Analysis is applied by using year as a unit.FB is obtained,which is related with the ecological safety of land-use change from 1999 to 2008.According to the scientific,integrative,hierarchical,practical and dynamic principles,ecological safety evaluation index system of land-use change in Ji'an City is established.Principal Component Analysis and evaluation model are used to calculate four parameters,including the natural resources safety index of land use,the socio-economic safety indicators of land use,the eco-environmental safety index of land use,and the ecological safety degree of land use in Ji'an City.Result indicates that the ecological safety degree of land use in Ji'an City shows a slow upward trend as a whole.At the same time,ecological safety degree of land-use change is relatively low in Ji'an City with the safety value of 0.645,which is at a weak safety zone and needs further monitoring and maintenance.
【Fund】: Supported by Major Project of Chinese National Programs for Fundamental Research and Development Program(2009CB219401);; Key Project of Natural Science Foundation of China(40534019)
【CateGory Index】: X826;F301
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