Research On The Development Of Market Town Settlement System In Yunnan Mountainous Area

The new urbanization road exploration under the special geographical environment of mountainous areas is the hot spot of academia and government inquiry.The practice of the countries and regions in the world shows that the nature of the new urbanization is the coordination of urban and rural areas.The aim of new urbanization is to construct the urban and rural areas into an interdependent,interrelated and mutually reinforcing continuum,and some urbanization that ignoring the geographical environment and the cost is unsustainable,especially as the representative of the geographical environment of complex and diverse and underdeveloped Yunnan in the Southwest Mountainous Areas.Yunnan with most the characteristics of geographical vertical zonality and fragmentation is destined to take a different from the eastern region of the new urbanization road.This study attempts to break through the traditional settlement of the two urban and rural areas,focus on the city's research methods,based on the characteristics of urbanization in Yunnan,from the view of comprehensive geography,regarding the settlement as a organic whole of continuous development,highlight the important role of market town in the evolution of settlement,and divides it into city,market town and village.On the basis of reviewing the current situation of domestic and foreign research,this paper combs the development process of the market town settlement system of Xuanwei city,evaluates hierarchical and temporal-spatial structure of the market town settlement system by the way of GIS spatial analysis,qualitative analysis and quantitative analysis,analyzes the main factors influencing the market town settlement system,explores the formation mechanism of the market town settlement system,as well as discusses its some development proposals,in order to provide a theoretical perspective and practical basis for the development of new urbanization in Mountainous Areas.The specific research contents are as follows:The first chapter is the introduction,mainly including the research background and significance,descripting of the study area,research content,methods,technical routes and innovation.The second chapter is a review of the study,mainly sort out the status quo on the market town of domestic and foreign research,clarify the relationship between market town,country fair,and settlement,define the concept of market town and settlement of market town system in this study,and discuss mainly the important role of population aggregation,transportation hub,regional service,economic agglomeration,social and cultural exchange and the coordinated development of urban and rural areas in the process of new urbanization,with which as a theoretical basis and realistic basis for the full text.The third chapter divides it into three stages according to the stage of the country fair policy: transitional development,ups and downs and re-sailing by the way of analyzing the development of country fair trade since the Republic of China,and summarize its evolutionary feature.The fourth chapter makes a comprehensive evaluation on the size of the town settlement,the differences of the size and hierarchical structure,using the quantitative and qualitative methods,such as entropy method,Gini coefficient,Zipf index and Natural break point method of ArcGIS.The results show: the size of the town is very different,the large town status is prominent,the size and hierarchical structure is unreasonable and the shape of structural like "conical flask".The fifth chapter evaluates and analyzes the time distribution,spatial distribution and service scope of the town,using the qualitative and quantitative methods such as spatial fractal dimension and ArcGIS spatial analysis to explore the structural problems of the settlement system.The results show : set interval of mountain market town is larger but shorter trend is obvious,spatial distribution uneven and elements of market town are weak,and the service range larger but the internal difference significant.Using the methods of literature research,ArcGIS spatial analysis,traffic dominance and other methods,the sixth chapter analyzes the main factors influencing the settlement system of the market town from the side of administrative,market construction,minority culture,geographical environment,traffic conditions,and further explores the formation mechanism of the town from two perspectives of range maintenance and space-time coordination mechanism.Combined with the above research,the seventh chapter makes the suggestions on the optimizing the development of future market town settlement system from the optimal structure,the industry development,the road network improvement,construction strengthen,the link of the inside and outside,hub role and other aspects.The eighth chapter is mainly the conclusion and discussion.