The Study On Urban Development Boundary For The Central City Region Of AnKang

With the unrestricted expansion of urban space,the low density of urban development has caused a sharp contradiction between human and land,which seriously threatens the sustainable development of cities and the ecological environment.In order to solve the "spread" of cities,urban development is facing a transition from extensive extension to connotation-intensive development.The scientific delineation and effective implementation of the urban development boundary is the key to ensuring the bottom line of the ecological environment,optimizing the urban structure,and intensively intensively and efficiently developing the development.The policy-oriented regions actively respond to each other,and the 19 th National General Conference will develop borders as an effective means to ensure ecological security,marking the The development of borders has become an effective measure to deal with urban problems.However,due to the lack of conceptual connotation and demarcation methods of the urban development boundary,it is difficult for the boundary effect to be effective.This article focuses on the lack of scientific rationality in the process of delineation of urban development and the difficulties in the development of the boundary and implementation difficulties.It compares domestic and foreign relevant theories and practical cases,and studies in depth the purpose and concept of the development boundary.The development boundary is a bullet."Combine",the boundary line of urban construction land that controls urban expansion and guides rational development within a certain period of time,and the combination of technical line and policy line that can be implemented on the ground.Taking this as an entry point,it analyzes and demonstrates the practice of delineating the boundaries of urban development,summarizes and summarizes,learns from experience,and avoids deficiencies.It comprehensively considers the impact factors of the development boundary and builds a complete and rational scientific development boundary delineation method.Combined with the empirical research on the boundary delineation of urban development in Ankang city center,based on the premise of “combination of multiple regulations” of Ankang city,the scale of urban development can be reasonably predicted,and the rigid control factors can be integrated to determine the urban rigid control boundary,and the suitability of land use can be analyzed.From the perspective of form,the urban development trend is judged,the urban development structure is demonstrated,and the promotion and restriction conditions in the process of urban development are fully taken into account,the superposition elements comprehensively determine the urban development,the spatial selection is made under the total urban development scale,and the sub-region conducts detailed demonstration.The use of ARCGIS preliminary demarcation line,boundary correction,combined with the actual,scientific coordination demonstration,improve the accuracy of the development boundary,optimize the boundary demarcation,and achieve the scientific nature of the development of the boundary planning technology.The combination of research and demonstration aims to provide reference and experience for the delineation of urban development boundaries,establish and delineate the working process path,make the development boundary “fall down” and “controllable” so as to solve urban development problems and actively respond to urban development transformation.