Research On Construction Of Green Ecological Network Of Jilin Yuebei Town Based On Analytic Network Process

With the rapid development of urbanization, the serious environmental problem gradually come into people’s life and it also affects the healthy development of city, the construction of green land system requires more and more attention, and Gradually become the main way to reduce the city environmental problems, construct reasonable, coherence city ecological green space system can effectively alleviate the city environmental pressure problems, it is played an important role in the ecological function of the city. This paper takes the research object of Yuebei demonstration of Jilin city combined with the feature of present green space resources, researching on the theory and method of constructing green ecological network through summarizing the domestic and abroad, exploreing the more appropriate methods and process of construction of Yuebei demonstration ecological network green space, and chooseing the comprehensive evaluation elements to evaluate the green space network for the purpose of constructing the most appropriate green ecological network form for planning area.This paper based on the ecological suitability overlay chart by geographic information system (GIS) analysis and present situation of ecological green space extraction by ENVI4.0 software, in order on two forms of network constructed by graph theory and network theory as the ratio of the selected object, determine the green ecological network evaluation factors weight by constructing the analysis network (ANP) model so as to realize the different green space network scheme comparison and selection. Finally to achieve the purpose of selecting the best comprehensive benefit optimization of ecological green space network.First, select the ecological sensitivity evaluation factor of Yuebei demonstration local conditions, generate ecological sensitivity superposition graph after the single factor ecological suitability analysis by geographic information system (GIS), in order to determine the reserve of ecological sensitivity and the suitable construction area. Secondly, based on the present situation of Yuebei demonstration, distinguish the present situation of land use, especially the ecological land as the retain green resources by the analysis of remote sensing satellite images using ENVI4.0 software. Then, as the basis, connect green ecological node using different types of networks to build four network belong to two basic network model of branched and cyclic, and thus obtain the reasonable generally network model result by the comparison of corridor structure index and network structure of α,β、γ index. Finally get the best form by a careful assessment of the weight of green ecological network evaluation screening elements of the various elements of analysis network model (ANP) calculated to put forward the concept of corridor path optimization, and enhance the ecological benefits by different land use types from the angle of vegetation selection mode, construction to obtain complete and proper city ecological green space system.By analysis of green ecological sensitivity, structure of corridor network index contrast and analysis network methods can be scientific and evaluate city ecological green space network quality scientific and quantitative, screen the dominant scheme of green ecological network, provide a scientific basis for the ecological green space network planning and management.