Study On The Layout Of Green Space System In Tongguan Central Urban Area

Green space,as an important open space in the city,not only undertakes the bottom line role of maintaining ecological security,but also serves as an important carrier for urban residents to get close to nature and enjoy daily recreation.With the transformation of the basic social contradictions in our country,people’s pursuit of material life will gradually be upgraded to the level of spiritual life.The new development demands put forward higher quality construction requirements for urban green space,and at the same time determine that its functions will be more diverse.Tongguan,as the east gate of Shaanxi,its special geographical location has created the natural terrain of "six ditches crossing Tong" within the county,making Tongguan rich in ecological and cultural resources.However,the relatively lagging green space construction in Tongguan is not enough to give full play to the value attributes of various resources,and it is difficult to support the people’s increasingly diverse living needs in the new era.In order to adapt to the new development demands,give full play to the value of ecological and cultural resources,and realize the high-quality construction and high-quality development of the central urban area of Tongguan,this paper takes the central urban area of Tongguan as the research object and forms the "current situation characteristics and problem analysislayout optimization and result verification" development of research paths.According to the guidance of national policies,return to the current construction characteristics and problems of the central urban area of Tongguan,and then optimize the layout of the green space system in the central urban area,and verify the layout results to ensure the scientificity and rationality of the layout.The main research content and conclusions are divided into the following four parts:The first part is the analysis of the characteristics of the current situation.Through relevant data sorting,on-the-spot investigation and visits,mathematical model analysis and other methods,a qualitative and quantitative comprehensive analysis of the green space in terms of composition distribution,scale ratio,and current use was carried out to determine the regionalization and distribution of green space in the central urban area of Tongguan.According to the characteristics of the current situation of globalization and scale adaptation,and according to the relevant national norms and standards and the demands of construction and development,it summarizes three problems: weak ecological value,lack of social service ratio,and insufficient display of cultural characteristics.The second part is the construction of suburban ecological network.Starting from the current situation of the green space system in the central urban area of Tongguan,combined with the development goals of the green space system,with the dual orientation of "problem + goal",determine the ecological space for evaluation in terms of safety,functionality and service,and use the least resistance model to finally construct The suburban ecological network pattern of "connected by mountains and rivers,coembedded by a corridor,and blending of old and new" in the central urban area of Tongguan is used to guide the construction and layout of the green space system.The third part is the construction of urban green space system.Based on the macro guidance of the suburban ecological network in the central urban area of Tongguan,on the basis of the classic organization mode of the relevant green space system and combined with the characteristics of the natural and artificial environment of Tongguan,the function-oriented hierarchical green space structure organization mode of the central urban area of Tongguan was determined,and the organization mode of "garden-mountaingarden" in the central urban area of Tongguan was proposed according to the distribution relationship between living space and ravine.Finally,the overall structure of the green space system of "two screens,three verticals,four horizontals,and multiple points" was constructed,which not only effectively linked the ecological resources of the region and the urban area,but also conformed to the construction characteristics under the special environmental constraints of the central urban area of Tongguan,and provided a basis for the land layout of the green space system.The fourth part is the verification of the layout of the green space system.Through the prediction of green space indicators and population distribution,the overall scale of future green space construction in the central urban area of Tongguan will be determined,and the green space system structure determined above will be followed.Based on the leading functions and construction goals of regional green spaces,protective green spaces,and park green spaces,for each level The green space is placed in space.Regional green spaces and protective green spaces are mainly laid out with reference to planar ecological sources and linear ecological corridors in the green space structure,while park green spaces are based on point green patches,combined with candidate sites determined by evaluation and field surveys,and The number,position and scale are optimized and adjusted to achieve the greatest degree of perfection and configuration of the green space system.The layout results were verified in three aspects: basic indicators,social services,and cultural manifestations.The green space hierarchy system was more complete,the service scope was more complete,and the cultural theme was more prominent.The indicator increased from 3.71 ㎡/person to 16.33 ㎡/person,and the service coverage increased from 42.48% to 99.53%.The planned green space system in the central urban area of Tongguan has achieved the expected goal.In the future,Tongguan will form a high-quality urban green space system with 300 meters of gardens and 500 meters of greenery,highlighting cultural characteristics.