Study On Suitability Evaluation System Of Land And Space Development In Yanji City Under Ecological Securit

With the construction of ecological civilization,the state has issued a series of policies on the the territorial space development.The reasonable development of territory and the optimization of territorial development pattern are important ways to achieve national security and green development,and enhance national strength.As the capital of Yanbian Korean Autonomous Prefecture,Yanji city is located in Changbai Mountain range with excellent ecological environment.The overall land use pattern is characterized by eight mountains,one water,half grass and half field.However,the construction land is scarce.In recent years,with the rapid development of the economy,the ecological quality has declined,forming a prominent contradiction between urban development and ecological space.It is necessary to analyze the suitability evaluation of land development through ArcGIS software for the development and protection of territorial space from the perspective of ecological security.Combined with ArcGIS,ecological security pattern theory and other research methods,this paper takes Yanji of Yanbian Korean Autonomous Prefecture as the research object,uses ArcGIS technology,and analyzes the land spatial characteristics of Yanji city from the perspective of ecological security pattern so as to construct the suitability evaluation system of land development,optimize the evaluation system and put forward the implementation of security strategy On the basis of clarifying the importance of ecological construction in Yanji City,four indicators are selected,which most suitable for the construction of ecological security pattern in Yanji city,through the comparative analysis of ecological indicators for suitability evaluation of land space development and ecological security pattern indicators.The four indicators are biodiversity protection,water conservation,soil and water conservation and desertification control.Finally,the appraisal of the suitability of land space development is carried out from the perspective of ecological protection,agricultural production and urban construction.Put forward strategies for planning and implementation management to guide the future development of Yanji City.The research goal of this paper is to study the construction of territorial space development suitability evaluation in Yanji City,by analyzing the resource background of Yanji City and combing the index system of ecological security pattern construction,so as to explore the internal characteristics of land space of ecological security pattern construction and provide the basis and guidance for the territorial space development suitability evaluation of the ecological security pattern of the same type of cities.