The Influence Of Datong-Xian High-speed Railway On The Urban Spatial Structure Of South Shanxi

China has successfully built the world’s largest high-speed railway network with the highest level of modernization.The high-speed railway has covered more than 92% of the country’s cities with a population of more than 500000.China has become a veritable highspeed railway power and high-speed railway power.The construction and operation of highspeed railway provides a carrier for the flow of economic factors,which can meet the demand of the flow of economic factors and enable the optimal allocation of economic factors in a wider range.Studying the impact of high-speed railway on the regional spatial structure is of great significance to promote the optimization of urban spatial structure and promote the healthy development of new urbanization and regional economic society.Datong-Xian High-speed Railway is the longest high-speed railway in Shanxi Province,which has strong typical significance in the research of high-speed railway in Shanxi Province.On the basis of summarizing the previous research results and theoretical accumulation,this paper takes the southern Shanxi region as an example to carry out research from three levels: macro,meso and micro.The main conclusions are as follows:First,the opening and continuous development of the Datong-Xian High-speed Railway High-speed Railway has greatly increased the number of cities with high-speed rail links in southern Shanxi,greatly shortened the commuting time with major cities in the country,and the compound accessibility has increased by 101.6% in 10 years.The changes in accessibility and transportation status have profoundly affected the communication and contact ability of southern Shanxi to the province and even to the outside of the province,as well as the strategic position of southern Shanxi in the country to a certain extent.Second,the opening of high-speed railways has a certain impact on the urban internal spatial structure,attracting population and economic factors to develop towards high-speed railway station areas.The main urban areas of Linfen and Yuncheng have a trend of expansion towards high-speed railway stations.The opening of the high-speed railway has promoted the development of the Fenxi high-speed railway area in Linfen,but at present,most of them are real estate projects and government projects,and there is a lack of industrial settlement.Therefore,there is still room for development in the overall capacity of the Fenxi area to undertake population transfer;The main urban area of Yuncheng City has a clear trend of expansion towards the northeast and north,and the expansion is rapid.The high-speed railway stations coordinate with the urban spatial expansion direction,improving the development potential of the surrounding areas.Overall,the urban spatial structure of Yuncheng City has changed more significantly,and the polarization effect caused by the opening of high-speed railway is more significant.Third,The opening of high-speed railway affects the land use structure around the station.The most intuitive impact of transportation hubs on the surrounding spatial structure is the change in land use structure.The highest impact of high-speed railway on land use types is Yuncheng North Station and Linfen West Station,followed by Wenxi West Station and Houma West Station,and finally Huozhou East Station,Yongji North Station,Hongdong West Station,and Xiangfen West Station.The counties along the Daxi high-speed railway in southern Shanxi are generally in the expansion stage of urban development.Currently,the higher the urban level,the greater the impact of high-speed railway on land use structure.Fourth,high-speed railway changes the development process of the surrounding areas of the station.Due to the different scale of the city and the different grades of the stations set up in the city,there are also differences in the levels and grades of the development of the areas around the high-speed railway stations.Yaodu District and Salt Lake District have the best development potential.They can rely on high-speed railway stations to form a new high-speed railway city and become an important pole of urban economic growth;Houma has a good development potential and has a certain impact on the urban spatial structure.It can rely on high-speed railway stations to form a new urban area of a certain scale.The remaining ones with small development potential will either form small functional clusters relying on stations or become pure transportation hubs,which will have little impact on the evolution of urban spatial structure.In the era of high-speed railway,the south of Shanxi Province is faced with problems such as uncoordinated development of high-speed railway and regional development background,poor connection of various modes of transportation,and failure to fully play the role of high-speed railway economic corridor.