| In the process of globalization,the development of the city is no longer confined to the city itself,but more consider the relationship between the city and the city,the overall development of the region,and the role of the city in the regional development,so the regional research of "Urban Agglomeration" and "metropolitan area" will become the focus of future research.With the development of the times and the advent of the information age,we also have a new concept of regional interaction.We have a more abstract concept of "flow".The spatial structure of metropolitan area is transforming from "field space" to "flow space".However,with the advent of the era of big data,we have new data to measure "flow".Lanzhou metropolitan area itself is located in the center of China’s geographical environment,but due to the slow development of the city as a whole,poor economic conditions,lack of Applied Research on flow space,it is unable to guide the development and optimization direction of the metropolitan area by controlling "flow".This study will be based on the most basic perspective of traffic flow,through the research method of flow space,using Arc GIS and flow space model to analyze the impact of traffic flow space on the network structure of Lanzhou metropolitan area.Using the data of highway and railway traffic,this paper studies the characteristics of traffic convenience,spatial agglomeration and differentiation in the metropolitan area,and summarizes the overall network structure of Lanzhou metropolitan area.The angle of flow space mainly lies in space,so this paper focuses on the spatial structure of Expressway flow and railway flow respectively.Starting from the whole space,this paper analyzes the development,centrality and spatial agglomeration differentiation characteristics of Lanzhou metropolitan area,in order to predict the future development direction of Lanzhou metropolitan area and put forward optimization solutions,analyzes and summarizes the development status of Lanzhou metropolitan area,some problems existing in the status quo,and puts forward corresponding solutions according to the analysis of the status quo of Lanzhou metropolitan area.Through the above research,we can find that: the urban network structure of Lanzhou metropolitan area has a strong group and circle,showing a structure of "two cores,three points,two axes,two circles and four groups".And through the study of traffic flow space,we can find that the spatial structure of Lanzhou metropolitan area has appeared obvious reconstruction and deconstruction phenomenon,and the network structure also tends to shrink.The area with Baiyin Lanzhou Linxia axis will become an important development axis in Lanzhou metropolitan area next only to Lanzhou New Area Lanzhou Dingxi axis“ Single center,strong center "is the biggest characteristic of Lanzhou metropolitan area.We should focus on strengthening the comprehensive strength of Lanzhou New Area,which is the sub center of the cluster,so as to make the city diversified development,introduce more talent resources,increase its centripetal force,and make the spatial structure of the whole metropolitan area more complex and more closely linked. |
