The Ecological Security Assessment And Space Control Of Urban Planning Implementation

With the reform and opening up, China's urbanization level has developed rapidly. But behind this high-speed urbanization, there are many unsustainable developments. The enhancement of social economy is often at the cost of ecological security in city, e.g. ecological land is eroded, the ecological structure is destroyed and the ecological environment is polluted, which greatly limited the city's future development. And urban planning, as the main means to guide the city to the harmonious development, failed to put forward adjusting strategy timely to improve the ecological system, for lacking of make commenting on ecological safety after the implementation of urban planning. Then make city construction fall into a vicious circle.This paper describes the problem on current system of urban planning in China and the serious consequences of these problems, by summing-up the theory as well as methods about urban planning implementation and ecological security assessment among western countries and China, summarizes a set of indicator system for post-urban planning implementation, finally make evaluation analysis with Chongqing New North Zone as an example. Based on the evaluation result of Chongqing New North Zone, this paper analyzes the implementation mechanism on ecological security during urban planning implementation, including the failure mechanism and the effective mechanism, and trying to find out the reason of the failure of the implementation mechanism on ecological security from the point of the three major urban planning system, then summarize effective experience by the implementation process and results. At last this paper summarizes the research results, focusing on the space element, then according to ecological security patterns in Chongqing New North Zone, it also puts forward space regulation strategy, building ecological structure and guidance for the next round of planning proposals.In a word, the lack of city ecological security has become a tricky problem in process of rapid urbanization in China. This paper tries to explore a road for city Sustainable Development, which bases on the study of urban planning implementation, ecological security assessment, implementation mechanism and space regulation strategy, then make Urban Planning serve for harmonious city development indeed.