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基于海运网络的区域关系研究

     

摘要

在“一带一路”战略实施的背景下,为了解全球集装箱运输网络中区域之间的关系及各区域在海运网络中的枢纽作用对全球物流行业发展的影响,以复杂网络为理论基础,以国家为单位将全球海运网络划分为155个区域,使用网络平均度、网络密度和中介中心性分析评价全球海运网络中各区域内部及各区域之间的海运网络结构,提出紧密指数作为评价区域之间联系紧密程度的指标之一。计算显示,全球海运网络具有无标度特性,可以将其抽象为复杂网络来分析;区域的中介中心性和紧密指数存在正相关关系;仅有8%的区域对整个海运网络的连通性带来显著影响。研究结果表明,国家港口数量在1~5之间的占国家总数量的85.34%;区域内部港口数量会直接影响该区域在海运网络中的参与度;在全球海运网络中发挥枢纽作用的区域有83.3%分布于欧洲和亚洲。%While the strategy of ‘One Belt and One Road’ is implemented, in order to analyze the vital influence on the development of global logistics which is brought by the regions relationship and all regions’ pivotal role in global container shipping network, based on the theory of complex net-work, global shipping network ( GSN) was divided into 155 regions according to different countries. Average degree, network density and betweenness centrality were used to analyze the shipping net-works of the regions and each shipping area’s position in GSN. Also, closeness index was used as one of the analysis indicators for the closeness relationship between regions in GSN. The results show that the global shipping network has a scale-free property, which is the basic property of complex network. And region’s betweenness centrality and closeness index positively correlated. Besides, on-ly 8% regions have significant influence in the connectivity of GSN. And it is found that 85. 34%countries’ have only 1 ~5 ports, which indicates that the number of ports in a region affects the region’s degree of involvement in GSN. Additionally, 83. 3% regions playing a pivotal role in GSN locate in Europe and Asia.

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