Study on Urban Lake Ecosystem Health Assessment

摘要

The properties of urban lake ecosystem considered, the index system for its health assessment is built with the pressure-state-response model framework put forward by Organization for Economic Co-operation and Development. The comprehensive index weights are determined with improved analytic hierarchy process and entropy value method. The model based on fuzzy optimum selection theory is used to assess health state of urban lake ecosystem. The application of this model in Lake Dongchang is given as an example. The states of its ecosystem health are assessed. The results conform basically to the reality.