Journal
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
Volume 14, Issue 4, Pages 1773-1780Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cnsns.2007.07.019
Keywords
Set pair analysis; Ecosystem health; Urban ecosystem
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Funding
- State Key Basic Research and Development Plan of China [2005CB724204]
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Set pair analysis (SPA) is introduced to assess the urban ecosystems, through which the approximate degree of urban ecosystem health to the optimal set is calculated to describe the health level of the urban ecosystems by combining multiple health indices. The urban ecosystem health levels of Beijing, Dalian, Shanghai, Wuhan, Xiamen and Guangzhou from 1995 to 2003 are thereafter evaluated using SPA. The results show that the urban ecosystem health states of Xiarnen and Guangzhou is the best during the study period, while the health states of the others changes over time. Particularly, the change of Beijing's urban ecosystem health from 1992 to 2003 is analyzed in detail. (C) 2007 Elsevier B.V. All rights reserved.
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