世界集装箱海运网络层次结构研究

Hierarchical structure in the global liner shipping network

将世界集装箱班轮运输划分为18个海运区域,根据17家主要班轮公司593个港口的航线连接数据统计18个海运区域间的航线连接情况,构建以连接频率为权重的加权世界集装箱海运网络.结合优势流分析和显著流分析对海运网络的层次结构进行研究,结果表明世界集装箱海运网络具有明显的层次性,可分为四层.各层次区域之间存在海运联系且不同层次的区域在网络中具有不同的作用,第一层次海运区域处于核心地位,第二层次及第三层次的部分海运区域的中介性较强.在此基础上,进一步探讨东亚和西北欧两个核心区域与其他区域的相对海运距离,分析海运区域间的内在联系.

The world liner shipping is divided into 18 shipping regions based on shipping services among 593 ports referring to 17 major liner companies, connections among these shipping regions are counted and the global liner shipping network is built. Hierarchical structure in the network is analyzed through a combination analysis of dominant flows and significant flows. The results indicate the global liner shipping network has a hierarchical structure with 4 layers, where regions in different layers have connections with each other and play different roles in the network. Specifically, regions in the first layer are in the core positions, while regions in the second layer and some regions in the third layer have strong intermediary function. To this end, the core regions （i.e. East Asia and Northwest Europe） are further explored： the comparative shipping distances between the two regions and the others are measured from a perspective of service frequency, and also inter-shipping region relationships are analyzed.