The Study On Green System Planning Of Yibin City In Sichuan Province

With the rapid development of urbanization, the problem of urban environment becomes serious day by day. "Sustainable development" has become the basic connotation of construction. Improving the urban living environment and protecting the biodiversity in the city has been seriously relating to the sustainable development of this city. Being a eco-tourism city, Yibin badly need to solve a lot of problems on the environment which is caused by the rapid expand of city scale and the development of tourism economy. So under this situation the first work is to compile a scientific and reasonable green space system planning.Based on the analysis on the existing conditions and development of green space in Yibin city, the ecological principle and landscape ecology principle were used to study on the green space system mainly in four aspects:(1) Applying ecology theory and GIS technology to analysis on the eco-sensitivity about some urban used land, it down to the following ecological regions: extremely sensitive area, sensitive area and area having a thick skin.(2) Based on eco-sensitivity analysis, keep a foothold of incorporation of country and city, we plan systematic construction consisting of big system , middle system and small system.(3) From the aspect of urban ecosystem: urban forest, urban wetland (including water field) to explore the rational planning manner ofYibin' s green space and put forward to some vegetation mode such forest, wetland vegetation and so on.(4) In order to embody Yibin' s distinguishing feature of historical cultural city, we pose creating the local special scene by way of excavating human and historical landscape and at the same time which will be brought into line with natural landscape.In order to make Yibin become a harmonious, humanistic landscape-, human function and full of local characteristics city, create a modernized city with good ecological environment, this paper could be used as a basicdata , a thought director to the planning of urban green space system and construction of Yibin city.