Study On The Boundary Of Urban Development Boundary In Xuzhou Metropolitan Area Based On Land Suitability Evaluation

In the context of rapid urbanization,China's urban space began to appear disorderly expansion trend,the rapid decline in the number of cultivated land,the rapid deterioration of urban ecological environment,seriously affect the city's future sustainable development capacity.In order to promote the intensive use of urban land,improve the urban ecological environment and protect the urban food supply,it is necessary to control the development scale of urban space,delineate the urban development boundary and guide the rational and guide the orderly development of urban spaceUrban development boundary is an important measure to curb urban sprawl and guide the orderly development of urban space.It has become a hot topic in urban planning research.There is a lot of research from the origin of urban development boundary to the introduction and practice of China.In order to enrich the study and explore a reasonable and feasible method of the delineation of urban development boundary.In this paper,Xuzhou urban area is used as the research area,and the urban spatial evolution of Xuzhou built area is analyzed by using the expansion intensity index and equal fan analysis.The expansion intensity of Xuzhou built area in different time and different directions is obtained.And then calculate the degree of the sprawl of the built area.According to the conclusion and the spatial evolution trend of the built area,the stage and future expansion direction and expansion intensity of Xuzhou urban spatial expansion are determined.It is found that Xuzhou is in the stage of rapid urbanization,the intensity of expansion and expansion is high,and the direction of expansion is mainly eastward and southeast.At the same time,urban space in the sprawl of the state of development,Based on this,it is necessary to control the urban space expansion of Xuzhou and delineate the urban development boundary of Xuzhou metropolitan area.According to the characteristics of coal resources exhausted cities,the final selection of delimitation of urban development boundary from the perspective of ecological protection.In order to better and comprehensively delimit the urban development boundary of Xuzhou metropolitan area,the ecological security evaluation of Xuzhou metropolitan area and the social and economic conditions are also carried out.In the process of ecological security evaluation,Innovative introduction of eco-space occupancy evaluation model.Finally,according to the ecological safety evaluation of Xuzhou metropolitan area,combined with the evaluation of traffic location and the evaluation of social and economic location,the minimum cumulative resistance model was used to evaluate the suitability of Xuzhou metropolitan area,and the urban area of Xuzhou metropolitan area was delineated Development of the border,at the same time put forward the corresponding management strategy,hoping to other similar cities to develop the boundaries of the work to provide some experience and reference.