Study On Eco-sensitivity Evaluation Of Ecological Park Of City

Urban ecological park is an important part of urban ecological system, and the key base for urban ecological protection and recovery. As one of the most important ways to coordinate the contradiction between ecological protection and urban development, the construction of ecological park plays a crucial part in construction and development of Chinese cities evidently day by day. An effective and important way to determine the priority or key part of construction and protection for ecological environment in urban ecological park is to analyze its Eco-sensitivity, to explore the index system for sensitivity analysis, to analyze the comprehensive Eco-sensitivity in the park, which provide key guide for the construcion of ecological environment in urban ecological park, the determination of protection area and the orientation for function and nature of the park.The thesis takes regulatory detailed planning projects of Zi Shanhu piece in Yiyang city as basis research,uses osition technique of geographic information system (GIS) combining with the analytic hierarchy process and weighted superposition method,and applies systematic analysis and comparison on the ecological sensitive analysis, evaluation methods and process for research.Hope it can establish countermove framework which is for perfect and reasonable environmental protection and ecological construction, and it will provide a meaningful reference for sustainable development of ecological construction.(1) It systematic analyzes and summarizes the development of urban ecological park construction process and the existing problems in and out of home, illustrates that the sensitivity analysis have unique superiority in urban ecological park construction,points out the ecological significance of research.(2) It introduces the ususal methods in practice process for ecological sensitivity analysis and points out the application and problems of present ecological sensitivity analysis method. Taking Zi Shanhu ecological park for example,through methods of the literature, collect data, using GIS of superposition technique and ahp, and weighted superposition,the thesis builds sensitivity evaluation index system and generate single factor analysis picture, sensitivity analysis picture and ecological environment protection picture.(3) According to the distribution characteristics of Zi Shanhu park's ecological sensitivity,it divides three grade for ecological function protection, and pertinently puts forward the corresponding protective measures which provide the scientific basis to coordinate the contradiction between the development and construction of the park.Ecological sensitivity analysis and evaluation method still present imperfections, and it still needs planners to improve the professional level,establish ecological sensitivity evaluation index system which are relatively uniform, form the technical guidelines of ecological sensitivity evaluation and ecological sensibility partition standardization. Ecological sensitivity analysis and evaluation method provides the reasonable scientific evidence for main-functional zone division of different level, ecological function regionalization and overall city plan.