湖北省城市网络结构及其复杂性研究

The Urban Network Structure and Complexity in Hubei Province

采用GIS及Python等技术手段,构建湖北省城市关联网络,提取出与各县(市、区)关联强度前2、前5、前10和前20的城市网络,对其网络结构及复杂性进行分析后,运用多元回归模型探索湖北省城市网络的形成机制。研究发现:①城市中心性空间分布呈现一主两副、东高西低的特点。②随着城市网络等级降低,湖北省城市网络结构由以武汉为中心的单极吸引型转变为以武汉为主中心,以宜昌、襄阳为次中心的主次复合辐射型。③节点的择优连接倾向随着网络等级的降低而更加凸显,但不同等级网络次中心的影响力呈现出尺度与区域差异。④资源优势与用地成本、市场潜力、劳动力成本与区位因素对城市网络的影响力依次变小;近邻优势在低等级城市网络中表现更为显著。

Based on the GIS and Python, and constructing urban correlation network, this paper extracts the top2, top5, top10 and top20 urban network in Hubei Province, analyzes their spatial structure and complexity and explores the formation mechanism of urban network using multi-regression model. The conclusions are as follows: 1) The distribution of node centrality presents the characteristics that are one main center, two subcenters, and "the east of Hubei Province is higher than the west". 2) With the degrade of urban network, the spatial structure of urban network changed from single point agglomeration into the composite and radial structure which consist of one main core (Wuhan city), two subcenters (Yichang and Xiangyang). 3) With the degrade of urban network,the preferential connection tendency of nodes are more obvious, the influence of subcenter network on different grades shows regional and scale discrepancies.4) The effects of land cost and resources superiority, market potential, labor cost and location exerting on urban network successively decrease. Geographical proximity has a greater effect on lower-grade urban network.