In this paper, we use factor analysis to evaluate the urban comprehensive quality of each city in the Lanzhou-Xining (Lan-Xi) urban agglomeration. The time distance was obtained by using GIS spatial analysis, and the structure and pattern of the spatial network were analyzed by using the gravity model and social network analysis method. The results show that: 1) The scale effect of the Lan-Xi urban agglomeration is gradually emerging, and it is gradually forming the urban agglomeration with Lanzhou and Xining as the core, the Lan-Xi high-speed railway as the axis, and a high-dense connection. 2) Lanzhou and Xining are at the core of the Lan-Xi urban agglomeration, which has a strong attraction and spreads to neighboring cities. 3) In the network structure of the Lan-Xi urban agglomeration, Lanzhou, Baiyin, Gaolan, Yuzhong, Yongdeng, Dingxi, Lintao, Xining, Ledu, Huangzhong, Ping’an, Minhe and Datong are located in the network core position, which have the superiority position and lead to the entire regional communication enhancement and the regional integration development. 4) This urban agglomeration has significant subgroups, eight tertiary subgroups and four secondary subgroup; the tertiary subgroups which compose secondary subgroup have a close connection and mutually influence each other. 5) The Lanzhou Metropolitan Area and the Xining Metropolitan Area have an important impact on the surrounding cities, and the peripheral cities are basically controlled by the central city. The Dingxi subgroup, Lintao-Linxia subgroup, Gonghe subgroup have more structural holes than the subgroups within the Lanzhou Metropolitan Area and the Xining Metropolitan Area, so the peripheral cities of these subgroups have relatively less connection with surrounding cities.

中文翻译：

---

兰州-西宁城市群城市网络结构与格局

本文采用因子分析法对兰西（兰西）城市群各城市的城市综合质量进行评价。利用GIS空间分析得到时间距离，利用重力模型和社会网络分析方法分析空间网络的结构和格局。结果表明：1）兰西城市群规模效应逐步显现，正在逐步形成以兰州、西宁为核心，以兰西高铁为轴心的城市群；高密度连接。2）兰州和西宁处于兰西城市群的核心位置，具有很强的吸引力，并向周边城市扩散。3）兰西城市群网络结构中，兰州、白银、高栏、渝中、永登、定西、临洮、西宁、乐都、湟中、平安、民和、大同地处网络核心位置，具有优势地位，带动整个区域通信增强和区域一体化发展。4）该城市群有显着的亚群，8个三级亚群和4个二级亚群；构成二级子群的三级子群联系紧密，相互影响。5）兰州都市圈和西宁都市圈对周边城市有重要影响，周边城市基本被中心城市控制。定西亚群、临洮-临夏亚群、共和亚群比兰州都市圈和西宁都市圈内的亚群构造孔洞多，