| Dingbian is a typical town of wind-sand grass shoal area in northern shaanxi,There are many problems in its spatial development,such as the fragile ecological environment,the shortage of constructive land resources and the extensive use of the space,the spatial scale of disorderly expansion and fragmentation It is necessary to construct the development of small cities and towns in this area,so this paper chooses Dingbian county as the research object,and carries on the study on the spatial shape optimization of Dingbian county under the rule of land.The research content of this paper is divided into four parts.The first part puts forward the background,purpose and significance of the research,and establishes the research method,content and frame on the basis of the concept definition.At the same time,the paper is prepared for the development of relevant theoretical research.The second part is the core of the article.In this part,the study of the spatial pattern of the Dingbian county is mainly based on the spatial boundary,spatial structure and spatial layout,this is based on the perspective of "limit",for the purpose of protecting ecological,And then the internal expansion of its boundary is estimated by the expansion-rate model.This is based on the scale of the city from the perspective of the "growth" of the city.Finally,there are two factors in the internal and external factors.On the basis of the boundary,the spatial boundary of the Dingbian County is selected by comparing the fractal dimension of the spatial boundary.Through the calculation,finally get Dingbian county compact space boundary line.The spatial structure of the city is analyzed by the spatial grammatical mathematical model,Firstly analyzing the spatial structure of the city,Secondly,according to the characteristics of urban spatial development and simulation the three situation of spatial structures,Finally,the minimum impedance model is used to evaluate the spatial structure of the optimization and the present situation,and it is verified that it is the spatial structure of the Dingbian county.Through the calculation,it is concluded that the urban spatial structure optimization and development plan is the fusion space development structure(the core of eastern life,the core of western industry and the central ecology corridor)of the two nuclear areas.Based on Fragstats,the quantitative analysis of the six plots in Dingbian county is carried out,and the development characteristics of urban spatial layout and the problems of land use are obtained.Secondly,Six kinds of land plots,the paper puts forward the optimization suggestion of the spatial layout of the balanced county based on the section.In the third part,the spatial structure,the spatial structure and the spatial layout of the section are introduced to generate the spatial pattern of the Dingbian County,and combined with the overall planning of Dingtian County 2014.From the spatial boundary,spatial structure,Spatial layout,the paper puts forward the suggestions on the optimization of the spatial form of the county along the border area,and the corresponding method is used to test the scheme before and after the optimization.Hoping to provide advice for the development of the land in Dingbian County.The fourth part is the conclusion and the prospect.Summarizes the spatial form of the spatial form of the Dingbian county,and summarizes the shortcomings in the construction process,and then puts forward the prospect of further research.Based on the quantitative analysis of the ecological suitability evaluation,the extension-rate model,the fractal dimension method,the spatial syntax,the minimum impedance model and the Fragststs and other mathematical tools,this paper summarizes the spatial pattern of the Dingbian County Optimization of the proposed recommendations to guide the future development and construction of Dingbian county,also for other similar ecological fragile areas of small town space development guide has a certain reference. |
PDF Full Text Request