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基于环渤海地区44个城市的铁路客运数据,运用社会网络分析、可达性分析、GIS空间分析等多种研究方法,初步揭示了该地区城市网络的空间形态、整体联系和局部联系特征。研究表明:(1)从空间形态上看,该网络大致形成“三纵二横”格局,五条客流带的走向同主要铁路干线基本一致;(2)从整体联系上看,该网络较为密集,但城市间联系的紧密程度呈现两极分化特征,其中北京—济南一带连接性和可达性始终处于较高水平;(3)从局部联系来看,大致形成辽宁、京津冀、山东西部和山东半岛四个子群,子群间联系呈现明显的距离衰减特征。
Based on the data of railway passenger transport in 44 cities in the Bohai Rim region, this paper uses the social network analysis, reachability analysis, GIS spatial analysis and other research methods to reveal the spatial form, overall contact and local contact characteristics of urban network in this area. The results show that: (1) From the perspective of spatial form, the network generally forms a pattern of “three vertical and two horizontal”, and the trend of the five passenger flow belts is basically the same as that of the major railway lines; (2) (3) From the perspective of local contact, Liaoning, Beijing-Tianjin-Hebei, Shandong and western regions are generally formed And four sub-groups in Shandong Peninsula, the sub-group showed obvious distance attenuation characteristics.