Evaluation on urban ecosystem health by employing Set Pair Analysis:a case study in Lanzhou, China
Chen Xing-peng1, Zhang Wei-wei1, Xue Bing1,2, Lu Chen-yu3, Fu Jia2,4, Geng Yong2,4
1. Institute of Human Geography, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China; 2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 3. College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China; 4. Key Laboratory of Regional Environment and Eco-Remediation(Shenyang University), MOE, Shenyang, 110044, China
Evaluation of urban ecosystem health is urgently needed because it is the developmental basis of urban social-economic system.As a systematic analysis method to deal with uncertainty issues,Set Pair Analysis(SPA)is employed to evaluate the urban ecosystem health in this paper by taking Lanzhou as a case.We study the urban ecosystem by employing SPA from the index aspects consisting of productivity power,living status,ecological ascendancy and vital force,representing the situation of urban economic subsystems,social subsystem,natural subsystem,and ecological regulatory subsystem.The results show that healthy degree of Lanzhou city ecosystem rises continuously.Connection degree of health increased from 0.4751 in 2002 to 0.5179 in 2008,but generally the level is not high.The results can provide scientific reference for regional sustainable development.
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Chen Xing-peng1, Zhang Wei-wei1, Xue Bing1,2, Lu Chen-yu3, Fu Jia2,4, Geng Yong2,4. Evaluation on urban ecosystem health by employing Set Pair Analysis:a case study in Lanzhou, China. , 2011, 30(2): 135-141.
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