RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2008, Vol. 17 >> Issue (1): 133-133.

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VULNERABILITY ASSESSMENT AND PRESSURE ANALYSIS ON ECOLOGICAL ENVIRONMENT OF TYPICAL WETLAND IN POYANG LAKE

LIAO Fuqiang1|2| LIU Ying2| YE Muya2| ZHENG Lin2   

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-01-20

Abstract:

The paper dealt with the ecological vulnerability of typical wetland.In terms of purpose，integrity，dominance，dynamic and relevant principles，a completely assessment index system of ecological vulnerability on typical wetland of Poyang Lake was established.These indices could be divided into three kinds of subcategory：wetland ecological feature，wetland overall function and wetland social environment.By consulting expert advices，evaluation criteria were determined，the target weight was identified，and weight vector was established；then a multilevel integrated fuzzy assessing model was established by constructing affiliation matrix of qualitative evaluation indicators.Finally，the ecological environment vulnerability of typical wetland in Poyang Lake was assessed.The results indicates that vulnerability value of typical wetland ecological environment is 0768，in a light fragile state.In the subcategory，the vulnerability value of ecological environment of wetland is 0732，in a light fragile state.The vulnerability value of wetland overall function is 0868，in a little fragile state.And the vulnerability value of wetland social environment is 0668，also in a light fragile state.The pressure mainly came from the socioeconomic environment，including inning and withdrawing farmland to lake，undesirable prevention measures of schistosomiasis，poverty，management system.

Key words: ecological environment, vulnerability assessment, pressure analysis, typical wetland, Poyang Lake

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