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《Journal of Anhui Agricultural Sciences》 2010-11
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Ecological Safety Evaluation of Land Use in Jian City Based on the Principal Component Analysis

LIU Fei-yue et al (Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, Guangdong 510640 )  
According to the ecological safety evaluation index data of land use change in Jian City from the year 1999 to 2008, positive treatment on selected reverse indices was conducted by Reciprocal Method. Meanwhile, Index Method was used to standardize the selected indices; and Principal Component Analysis was applied by using year as a unit. FB was obtained, which was related with the ecological safety of land use change in the years 1999-2008. According to the scientific, integrative, hierarchical, practical and dynamic principles, ecological safety evaluation index system of land use change in Jian City was established. Principal Component Analysis and evaluation model were used to calculate the four parameters, including the natural resources safety index of land use, the socio-Feconomic safety index of land use, the eco-environment safety index of land use, and the ecological safety degree of land use in Jian City. Result indicated that the ecological safety degree of land use in Jian City showed upward trends as a whole with a slowed-down tendency. At the same time, ecological safety degree of land use change was relatively low in Jian City with the safety value of 0.645, which was at a weak safety zone and needed further monitoring and maintenance.
【Fund】: 国家重点基础研究发展计划(973)项目(2009CB219401);; 国家自然科学基金重点项目(40534019)
【CateGory Index】: F301.24
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