| With the improvement of the degree of economic globalization and the rapid development of transportation,information and communication technology,different adjacent cities are connected to each other through developed infrastructure,and gradually form urban areas based on future competition.In 2019,the National Development and Reform Commission timely issued the " National Development and Reform Commission ’s Guiding Opinions on Cultivating and Developing Modern Metropolitan Areas," clearly stating that metropolitan areas,as a spatial carrier of new urbanization development,are the logical starting point and important basis for regional integration development.Promoting the efficiency improvement and balanced development of factor flow in the metropolitan area is helpful to solve the problem of unbalanced and inadequate regional development,and then realize regional coordinated development.Xi ’an metropolitan area,as the northwest strategic hub in the national " two horizontal and three vertical " urbanization strategic pattern,plays an important role in national modernization and high-quality development.As the core area of the metropolitan area is the power source to lead the high-quality development of the metropolitan area,it is of great significance to clarify the spatial pattern characteristics of the core area of the metropolitan area and promote the balanced development of the factor flow in the core area of the metropolitan area to enhance the radiation driving ability of the metropolitan area and accelerate the integration process of Xi ’an and Xianyang.In this context,from the perspective of network association,this paper takes the core area of Xi ’an metropolitan area as the research object,uses mobile phone signaling data and enterprise connection data to characterize urban functional connections and then establishes an associated network between urban units.With the help of quantitative statistical analysis method and social network analysis method,this paper takes the interaction between ’ attributenetwork ’ as the research framework,analyzes the current spatial pattern characteristics and its influencing mechanism of the core area of Xi ’an metropolitan area,constructs the overall pattern of multi-center network,and proposes spatial pattern optimization suggestions from three aspects : central system,connection corridor and spatial group.In order to promote the flow of factors from efficiency to equilibrium through planning intervention,and then improve the level of spatial coordination in the core area of the metropolitan area,and better lead the high-quality development of Xi ’an metropolitan area.It is found that the current urban spatial attributes of the core area of Xi ’an metropolitan area are obviously different.The function of the central urban area of Xianyang in Xi ’an is over-concentrated and the surrounding areas are over-concentrated. |
