基于信息流视角的甘肃省城市网络结构特征研究

Research on the Characteristics of Urban Network Structure in Gansu Province from the Perspective of Information Flow

摘要: 从不同视角剖析中国城市网络的结构特征对于深刻认识中国城市网络结构及模式具有重要意义。信息流得益于互联网的发展突破了传统时空距离的约束，是表征区域联系的重要指标。基于百度指数对甘肃省城市网络结构特征进行研究，结果发现：1) 基于信息流视角的甘肃省城市网络结构表现出明显的核心-边缘特征，兰州是省内唯一的核心，且核心地位仍在进一步加强，省内缺乏明显的信息流强度第二位的城市。2) 甘肃省城市信息流的离散程度较高，各城市信息流分布比较分散。3) 甘肃省河西地区城市间信息联系普遍下降，黄河以东以南的地区城市对信息联系普遍增强；除省会兰州之外的其他城市间信息联系整体较弱，且这种弱势程度还在进一步加深。本研究可以为甘肃城市与区域协同发展以及更好发挥甘肃区位优势提供一些思路和参考。

Abstract: Analysing the structural characteristics of China's urban networks from different perspectives is significant for understanding the structure and pattern of China's urban networks. The development of the Internet has broken through traditional spatial and temporal constraints, allowing for the flow of information and characterising regional connections. Based on the Baidu index, this study examines the structural characteristics of the urban network in Gansu Province. The findings indicate that: 1) The urban network structure of Gansu Province, from the perspective of information flow, exhibits clear core-edge characteristics. Lanzhou is the only core city in the province, and its core status is further strengthened. However, there is a lack of clear second-tier cities in the province in terms of the strength of information flow. 2) The level of discrete information flow in Gansu Province is high, with a relatively dispersed distribution of information flow in each city. 3) The connectivity between cities located west of the river in Gansu Province has generally decreased, while the intercity connectivity in areas south and east of the Yellow River has strengthened. Overall, the connectivity between cities other than the provincial capital of Lanzhou is weaker and this weakness is further deepening. This study provides ideas and references for the synergistic development of cities and regions in Gansu, as well as better utilization of Gansu's location advantages.