Resource-exhausted Cities Ecological Security Evaluation UES-PSIR Model And Countermeasures—Xuzhou Vertical And Horizontal Analysis

With the rapid development of the economy, the overall economic development of our country at an important transition phase, Lewis turning point approaches, reveals the characteristics of unlimited supply of labor began to disappear, highlighting the problem of aging, the overall standard of living of the city as the population continues to increase, limited capacity of ecological bad environment, sustainable ecological development subject to challenge, the recent emergence of haze, water pollution, regional climate instability phenomenon, reflecting the fragile ecology in the process of human society has been severely affected. After the "eighteen" held our ecological security issues once again put forward a new theory and constructive measures. Tough times for the country’s resource-exhausted cities currently is in transition, the ecological environment is worrying, by studying the urban ecological security evaluation of resource-exhausted cities to evaluate the ecological security analysis of the state is of great significance.This paper uses the ecology, sociology, management, economics and other multi-disciplinary theories and methods for in-depth study of urban ecological security connotation and evaluation in ecological security evaluation model and index optimization methods to analyze and optimize the foundation on, built on pressure- state- impact- response(PSIR) model of urban ecological security(Urban Ecological Security) evaluation index system, using AHP and Entropy Combination determine the index weight, through a comprehensive index method Xuzhou in time ecological security of the dimension and spatial dimension two dimensions of evaluation and analysis, whereby comparative study of social resource-exhausted cities- natural ecological security issues arising from complex ecosystems, and gives the corresponding countermeasures- the economy.