The Evaluation Model of Island Sustainable Development Based on Multi-Objective Variable Fuzzy Set Theory—Taking Changhai County in Liaoning Province as an Example

With the vulnerable ecological environment of sea islands,protecting the ecosystem of islands as well as their surrounding waters,reasonably exploiting and utilizing the natural resource of sea islands,and promoting the sustainable development of island economy and society have become basic purpose of Legislation of Sea Island Protection of PRC.This essay attempts to refer to the idea of land area sustainable development index system,select indexes in terms of four aspects including survival support,ecological environment,economic development,social and intellectual support,integrating the natural environment of islands and the particularity of society and economy,determine the weight of evaluation index of island sustainable development with the integration of entropy weight method and the nonstructural decision fuzzy set theory model,and build the index system of island sustainable development;the essay also further imports variable fuzzy evaluation method of the unity of the opposites and quality interaction law,set up the comprehensive evaluation model of island sustainable development based on the theory of variable fuzzy set,evaluate and verify the condition of sustainable development in Changhai County from 2001 to 2011,and identify key factors,existing problems and restrictive factors affecting the capability of sustainable development.This provides scientific analyst data for improving the level of sustainable development of economy and society.