Research On The Current Situation Evaluation And Layout Optimization Of Small Town Global Park System Based On Open Source Data

The park system is an important part of the green space system,is the main place for urban and rural residents outdoor leisure,and is also the key factor to improve and enhance the urban and rural ecological environment.With the proposal of land space planning,under the overall framework of "five levels,three categories and four systems",park system planning is carried out on the "one blueprint" of land space overall planning,which is conducive to balance the relationship between urban construction and environmental protection,and build a more harmonious and healthy living environment.The existing research on park system planning is mainly concentrated in large cities and medium-sized cities,while the related research on small towns is less.The small town in this thesis refers to the county level of administrative divisions.The integration and allocation of park and green space resources at the county level can effectively improve the integrity and comprehensiveness of planning,better maintain social fairness and justice,and provide a more pleasant living environment for residents.The emergence and application of big data,especially open source data,provide a basis for objectively understanding the law of urban development and making various plans more scientifically.It has become a trend to deal with the increasing complexity and comprehensive problems in the development process by acquiring and processing massive,multi-source open source data.Planning and design based on big data analysis has become a hot research topic in various fields.It studies complex and diverse environmental space from a more open perspective.The research will build the evaluation and optimization strategy of small town global park system planning under the background of open source data from the theoretical framework,method system to practical application.Taking Pingyi County,Linyi City,Shandong Province as the research object,based on a variety of open network platforms,such as Baidu map,Open Street Map website,NASA website and other enterprise and open organization websites,we can obtain elevation data,population data,population data POI data and other types of open source data.By using Arc GIS and other spatial analysis software,this thesis attempts to analyze and evaluate the global park system of Pingyi County through AHP,word frequency statistics and semantic analysis,and optimize the layout of the global park system.The specific research contents are as follows.First,the related concepts of park system and open source data are clarified,and the historical development process is sorted out,and the research progress of park system at home and abroad is summarized.This thesis introduces the research content,research methods and technical route of this study.Secondly,select the appropriate evaluation method and the required evaluation model,and obtain the evaluation data according to the needs of the model,so as to build the evaluation system of small town global park system.Thirdly,based on the current situation of green space development in Pingyi County,this thesis introduces the characteristics and access of the required network open source data,and preprocesses them.Fourthly,based on big data,the multi-dimensional evaluation system is adopted to analyze the current situation of Pingyi County’s global park system,and AHP spatial analysis are used to evaluate the global recreation suitability;The OD cost matrix and Baidu map accessibility analysis are used to evaluate the overall recreational accessibility;Through the statistical analysis of word frequency and visual expression,this thesis analyzes the key core vocabulary of the park system,combined with the emotional perception evaluation analysis of network comments based on semantic analysis,obtains the emotional color of the network evaluation of Pingyi County Tourism and main scenic spots,and provides reference suggestions for the subsequent related planning.Fifthly,based on the above analysis,the layout of the whole area park in Pingyi County is carried out: combined with the whole area tourism resources of Pingyi County,the recreational space is arranged in groups,and the "points" and "surfaces" are divided.Then,based on the principle of accessibility and the maximization of the comprehensive benefits of landscape resources,the "line" of the whole area tourism path is constructed,and the points and surfaces are connected in series by the route selection,Optimize the spatial layout of the global park system.Finally,through theoretical research and empirical analysis,the thesis puts forward the layout optimization measures and improvement suggestions of Pingyi County global park system,analyzes the shortcomings and limitations of the research,and prospects the application prospect of open source data and new technology methods.