The spatial structure evolution of the urban agglomeration on the Northern Slope of the Tianshan Mountains in Xinjiang, China

In the process of urbanization, the coordinated development of urban sub-clusters is an important strategy for the overall promotion of the regional economy, and exploring the characteristics of urban spatial structure has reference significance for the transformation of regional levels. This paper selects the land use data and urban statistical data in the study area, and uses the topsis method to evaluate the comprehensive quality of each city. Based on the gravitational model, social network analysis, urban expansion method and correlation analysis method, the basic characteristics of urban spatial structure of the urban agglomeration on the northern slope of Tianshan Mountains are analyzed from macro and micro perspectives, and the spatial pattern of urban network is constructed according to reasonable methods. The results show that: (1) The urban system headed by Urumqi is gradually expanding, and the urban volume is becoming larger. (2) The urban network structure diverges from Urumqi to the periphery, and is most closely connected with the surrounding cities. Urumqi's city center has the highest degree, occupies a dominant position in the city, and has high resource control rights, which can affect the development of the entire region. (3) According to the characteristics of agglomerated subgroups, the urban agglomerations are mainly distributed in three types of subgroups, and the spatial differences in the comprehensive quality of cities in the entire region are obvious. (4) The delineation of urban network structure circles is conducive to further promoting regional Internal coordinated development, and promote the construction of a reasonable urban spatial layout.