基于交通流的关中城市群空间联系网络研究

Urban Network Structure of Guanzhong Urban Agglomeration Based on Traffic Flow

基于关中城市群46个城镇之间的公路和铁路客运交通流数据,在多源交通流融合的基础上,运用空间分析和社会网络分析方法对关中城市群城镇空间联系格局与网络结构进行测度。研究发现:(1)关中城市群城镇空间联系整体上呈现西安—宝鸡"双中心—辐射"格局,局部上"扇形、放射状"空间联系结构较发育;(2)关中城市群网络发育水平较低,具有高度集中性和不均衡性,总体上东部城镇对城市群网络的影响力强于西部城镇;(3)关中城市群网络呈现"核心—边缘"结构,核心城镇具备对网络的支配作用和"掮客效应",边缘城镇的"中介效应"不显著;(4)关中城市群网络结构的形成和发展受地形条件差异、交通路网建设、城镇发展水平、行政边界壁垒4个方面因素综合影响。

Based on the flow of intercity buses and railway of 46 towns in Guanzhong urban agglomeration,with the methods of spatial network analysis and social network analysis,this paper revealed the urban spatial connection pattern and network structure of Guanzhong urban agglomeration. The results were as follows:(1)The urban spatial connection of Guanzhong urban agglomeration showed Xi'an-Baoji"double center-radiation"pattern overall. On the part,the spatial connection patterns of "sector,radial"shapes were developed.(2)Guanzhong urban agglomeration was at a low developmental level,and it was with extreme concentration and imbalance.The eastern towns had stronger influence on the urban agglomeration network than the western towns.(3)Guanzhong urban agglomeration network showed"core-periphery"structure. The core towns had dominance and"broker"effect on the network,while the edge towns did not get more"intermediary"opportunities.(4)The different location,the development of traffic network,the urban development level and the administrative border barrier had a certain effect on the formation of Guanzhong urban agglomeration network.