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《Acta Scientiae Circumstantiae》 2013-04
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Urban ecosystem health assessment model and its application:A case study of Tianjin

ZHAO Shuai1,CHAI Lihe1,*,LI Pengfei2,CHENG Hongxin1 1.School of Environmental Science and Engineering,Tianjin University,Tianjin 300072 2.North China Municipal Engineering Design & Research Institute,Tianjin 300074  
Health of urban ecosystem is attributed to the development in five aspects,e.g.vigor,structure,resilience,function maintenance and population health.Although many assessment models have been established to depict the urban ecosystem health,few of them can premeditate the interaction between the various indicators.In this paper,we propose a novel model based on maximum flux principle that can overcome limitations of the existing models.Employing the self-organization feature map(SOM),the new model can better represent the characteristics of urban health.We obtained the health status from 2001—2009 in Tianjin using this model,and urban ecosystem health status in each year is acquired,which shows an increasing trend.Thanks to its ability in revealing the evolution of the dynamic mechanism and the temporal-spatial evolution of the urban ecosystem,our model shows great advantage in the unban ecosystem assessment and prediction of the health status.
【Fund】: 国家自然科学基金项目(No.71071110 71273185)~~
【CateGory Index】: X826
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