Urban Ecological Security Evaluation and Analysis Based on Fuzzy Mathematics

Abstract

With rapid development of society and economy, more and more problems on ecological security stand out. As a populous and complex ecosystem, urban ecosystem is more fragile and unsteady. Urban ecological security is the basis and core of regional and national ecological security. Therefore, evaluation and management of urban ecological security has become a hotspot in concerned sciences. The paper introduced fuzzy mathematics into urban ecological security evaluation and established an evaluation model. Then the paper evaluated ecological security conditions of Hefei city from 2000 to 2009. The results show that ecological security conditions of Hefei belong to insecure grade from 2000 to 2001, belong to relatively insecure grade from 2002 to 2006, and belong to critically secure grade from 2007 to 2009. Ecological security conditions of Hefei show a tendency of gradual improvement. The results can provide references for the formulation of urban sustainable development strategies.