Study On Boundary Of Urban Growth Boundary Based On CA-Markov

As an important task of urban development and construction,the process of urbanization,driven by high-speed promotion,has also brought about negative effects on the expansion of urban space,such as the chaos of urban space development and the scale of urban scale.Sequence spread and other phenomena intensified.In order to control the scale of the city and guide the healthy development of the city,the new "Urban Planning Method" was formally implemented in 2006,which clearly pointed out the necessity of urban growth boundary delineation for urban spatial growth management,and demanded that the urban master plan and center Urban planning in a clear scale,delineation of land use.The analysis of the practical experience at home and abroad found that the delimitation of urban growth boundary has a positive effect on alleviating the contradiction between economic development and resource shortage.In this paper,the urban growth boundary is delineated as the core of the study,and the technical methods are discussed in depth.The empirical research is carried out in the town of Shenmu County as the research object,with a view to the scientific planning of the urban growth boundary for future planning.Control to provide reference.This paper starts from the background of the research,clarifies the purpose and significance of the research,summarizes the relevant research results and basic theory at home and abroad.Then,the author makes a comparative analysis of the method of delimiting the boundary of urban space,and puts forward the method of combining CA model and Markov model This paper analyzes the urban spatial expansion boundary by analyzing the land use change and urban spatial growth constraints in 2009 and 2015.Based on the introduction of Shenzhou County and the data preprocessing,this paper analyzes the spatial expansion of urban space,Markov model predicts the land use situation in 2020,combined with the analysis of the rigid non-construction elements of the central town of Shenmu County,and comprehensively delineates the spatial growth boundary of the central town of Shenmu County in 2020 and compares it with the "Shenmu County Land Use Master Plan(2006-2020)" Comparative analysis,combined with the actual,proposed Shenmu County town center space growth control measures.The main conclusions of this paper are as follows:(1)The trend of land use change in the center town of Shenmu County between 2009 and 2015 is as follows: the scale of construction land has increased sharply,the scale of water and grassland has been reduced obviously,and the scale of forest land and other land has increased slightly.,The conversion between the grass is more active.(2)into the dynamic simulation ideas,to "forward planning" and "reverse planning" combination of the designated way is conducive to the scientific delimitation of urban space growth boundary,delineation of the results to achieve a reasonable expansion of urban space to guide the protection of regional ecological The purpose of security at the end.(3)CA-Markov model with its powerful spatial simulation function to make the results more scientific,the process more operational,planning for the delimitation of urban boundaries provides a practical idea.At the same time,however,the CA-Markov model does not apply to mutations in response to external factors in the simulation of land use,which should be further improved in future studies.