中国嵌入“21世纪海上丝绸之路”航运网络的关键节点识别

共建“21世纪海上丝绸之路”重大倡议的提出,疏通了东西方经由航运往来,实现全要素“流动”的海上通道,拓展了中国连接世界经济的新型贸易之路。本文基于航运往来关系,引入社会网络分析方法,分析中外整体航运网络空间结构及核心—边缘构局,结合嵌入广度、嵌入深度和网络中介功能,类比不同地区航运网络嵌入模式差异;综合考量中外港口节点的网络中心地位和现实航运能力,识别航运网络中的功能节点。研究发现：①沿线航运网络呈现以中国—东南亚地区紧密关联为重心的“镐头”状空间格局,上海、深圳、新加坡、巴生港共同架构起沿线港口低耗高效的轴辐式关联网络结构;②过滤得到关联骨干网络和核心网络,并识别出关联广度和强度差异的海外港口特殊节点和核心节点;③港口嵌入航运网络的方式大致可分为以中国和东南亚港口为代表的(广度、深度、中介功能)层级嵌入模式和以非洲、南西亚—中东、南亚和欧洲地区为代表的均质嵌入模式;④中国港口外向关联强度层级特征明显,识别出潜在复合型枢纽港、外向干线港、内向直挂港、中介支线港和边缘喂给港五种类型的港口节点,并明确分工提出发展建议,以期有效协调港口组织格局和节点功能互补共进,强化“21世纪海上丝绸之路”的通道价值。

Identification of Chinese key nodes in the shipping network of the 21st Century Maritime Silk Road

In May 2017, The Belt and Road Initiative First International Cooperation Forum, which once again highlighted China's efforts and contributions in the construction of the "community of human destiny," was held in Beijing. We have drawn up the strategic conception of building the 21st Century Maritime Silk Road, thus paving the maritime passage of elements flow in Eastern and Western countries, and expanding the new trade route for China to connect the world economy. Based on the relationship of shipping between the Chinese and international ports and social network analysis (SNA), this study mapped the connection network of Chinese and international ports along the 21st Century Maritime Silk Road. The study also used the SNA method to analyze the overall network spatial structure and its core-periphery structure. We considered the network centrality and the actual shipping capability of the Chinese and international port nodes, thus identifying the functional nodes in the shipping network. The main conclusions are as follows. (1) The 21st Century Maritime Silk Road shipping network presents a spatial pattern of the pickaxe shape, and the close connection between the Chinese and Southeast Asian ports is the core of this pattern. Shanghai, Shenzhen, Singapore, and Port Klang constitute the hub and spoke network structure of the port of high efficiency and low consumption. (2) We derived the backbone network and core network through filtering, and identified special nodes and core nodes of international ports with different breadth and intensity. (3) There are two ways for ports to enter the shipping network. One is the hierarchical embedding mode (breadth, depth, intermediary function), such as China and Southeast Asia, and the other is homogeneous embedding mode, such as Africa, south West Asia-Middle East, South Asia, and Europe. (4) We identified five types of Chinese port nodes: potential composite hub port, export-oriented trunk port, inward direct port, intermediary branch port, and marginal feeder port. Then, the development proposals for these five types of ports are put forward, in order to effectively coordinate the port organization pattern and node functions so that ports can complement each other and enhance the value of the 21st Century Maritime Silk Road.