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《Geographical Research》 2010-02
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The health assessment of the urban ecosystem of Xining city

CHEN Ke-long1,SU Mao-xin1,LI Shuang-cheng2,LU Jing-hua3,CHEN Ying-yu4,ZHANG Fei1,LIU Zhi-jie1(1.Department of Geography and Resource Environment,Qinghai Normal University,Xining 810008,China;2.College of Urban and Environmental Sciences,Peking University,Beijing 100871,China;3.College of Tourism and Geographical Science,Jilin Normal University,Siping 136000,Jilin,China;4.Department of Geological Engineering,Qinghai University,Xining 810006,China)  
Research of ecosystem health is becoming a comprehensive cutting-edge discipline focusing on human activity,socio-economic organizations,the natural systems and human health,which has attracted more and more attention in China since the beginning of the 21st century.Urban ecosystem health assessment is an important direction of development in ecosystem health research,especially in the health of urban living environment,which well runs the city as a community or an eco-system.Based on the connotations of the health assessment of urban ecosystem,five indexes are selected to build an evaluation system,including dynamics,organizational structure,resilience,ecosystem services and the health status of populations.Besides the method of fuzzy mathematical models is applied to analyze and evaluate the health of the urban ecosystem of Xining city from 2000 to 2008.The results show that the health status of the ecosystem of Xining city was mainly at a pathological level and tended to be improving year by year during the nine years.Per capita GDP,urban population density,per capita green area,sewage treatment rate,the Engel's coefficient and the number of well-educated people have exerted influence on the healthy development of Xining.It is forecasted that the sick and unhealthy status will have a declining trend in the next three years,while the healthy and very healthy status will have a rising trend,suggesting that the ecosystems of Xining will be further improved.And the health in the three years will be mainly in a sub-health state.In fact,forensic analysis will greatly enrich the health of China's urban ecosystem as a case study.It is of great practical significance to monitor urban ecological environmental changes in urban planning.Ecosystem health assessment studies on sustainable development are a contemporary hot spot,and how to accurately predict the status of the future healthy development needs to be further explored.
【Fund】: 973项目(2005CB422000);; 国家科技支撑项目(2007BAC03A08-5)
【CateGory Index】: X826
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