Study On The Evaluation Of Ecological Carrying Capacity In Yangzhou

Based on the theories of ecological carrying capacity and sustainable development, combined with the specific circumstances of Yangzhou city, an evaluation index system and a classification method of ecological carrying capacity are put up.The specific contents including:(1) Introduces the physical geography, resources, environment, socio-economic situation of Yangzhou city .Then by analyzing the actual utilization and existed problems of regional water resources land resources, the comprehensive evaluation index system of ecological carrying capacity of Yangzhou is established from the three aspects of ecological flexibility, resources - environmental bearer, socio-economic coordination on the foundation of domestic and foreign research.(2) By summing-up the methods on ecological carrying capacity, considering the characteristics of Yangzhou evaluation index system on ecological carrying capacity , selecting the method of amended principal component analysis, using SPSS software as technology platform , Yangzhou's ecological carrying capacity in subsystem during 1998-2007 is calculated and analyzed .(3) Based on the results of Yangzhou ecological carrying capacity in sub-system, calculates the final weighted results of ecological carrying capacity and grade rating by using the methods of AHP and principle of maximum membership degree on fuzzy mathematics.(4) According to the changes in ecological carrying capacity of Yangzhou City , a series of measures based on improving the using efficiency of water resources and land resources, adjusting the industrial structure, reducing pollutant emissions are proposed to enhance the ecological carrying capacity Yangzhou strategy.