A Study On Theory And Method Of Urban Green Space System Planning Based On The Sustainable Development

At present,Chinese social development is undergoing a comprehensive and profound change,in connection with the urban area,this change is mainly focus on the performance of the transition of social system,reform of political system,social stratification remodeling,deterioration of the ecological environment,urban cultural changes,etc.Meanwhile,there are number of contradictions between the system planning of urban green space and construction indeed so far.Obviously,if we still continue to adopt the traditional concept and methods of urban green space system planning,neither will it help solve fundamental problems and contradictions thoroughly,nor it is beneficial to the development of Chinese urban greening.Thus,this study which was based on the background of urban planning and landscape architecture conducts a comprehensive explanation on the essence of urban green space, urban green space system and its planning,And with the guidance of "harmony between human being and nature" concept,from the angle of improving the scientific and rationality of urban planning, discussing the existing method of system planning of urban green space in details,this article tries to find the system which could meet the needs of urban development planning and solve the problems from a technical point of planning the development of urban green space.The results of this study are as follows:1.Explaining the essence of "urban green space" in further by redefining it's concept which is from the point of land,the urban green space is an integrated and natural subject.From an economic point of view,urban green space is the natural capital;from urban planning perspective,urban green space is a green infrastructure;from the perspective of social and political science,urban green space is social public goods.2.By using the wide range of meaning methodology of complex systems,the integration methodology of the urban green space system planning comes into being in this article.What's more,it is also brought forward that operating model of its integrated methods,which is the macro-line system framework of green space system planning.3.On the technique level,starting from the layout of urban green space,the article emphasizes that it is pretty necessary to meet the needs of urban development for the layout of urban green land. After making clear the guidance of "the function of green land" and the layout thought of the classification for existing green land,the article points out the layout methods of the green land based on "adaptive evaluation of green";At the same time,from the perspective of the ecological functions of green space,there are also some evaluation of green practices which are based upon the heat island effect mitigation preliminary.On this basis,in order to improve urban green space system planning methodology,this article also adjusts the process of existing urban green space system planning partially.4.In view of urban space,the layout of the open green spaces is regarded as a keystone,it is also pointed out the three-tier distribution model from the community to the City and to suburb.For the green land construction of park in community,it is highly suggested to integrate with the development planning of urban communities and form the secondary structure of a green land in residential community and the grass root community.The per capita of the green land in residential community is 2 m~2/person,the one of the grass-roots community is0.5 m~2/person,As for the urban level,in order to promote the construction of major parks effectively in the city,the study indicated that the main target for the future should be the construction of major parks.It is suggested that the Per capita area of the construction should be increased to5 m~2/person,The on of large-scale comprehensive park should be 9 m~2/person.