全球数字服务贸易网络的拓扑结构特征及影响机制

Analysis on the Topological Structure Characteristics and Influence Mechanism of Global Digital Service Trade Network

研究目标:深入剖析全球数字服务贸易网络的拓扑结构、动态变迁架构和显著要素的影响机制。研究方法:基于产品异质性视角,采用社会网络分析技术构建全球数字服务贸易网络,分别从以整体结构考察的整体层面、以社团变迁架构考察的中观层面和以节点重要性考察的个体层面全面分析。研究发现:样本考察期内,全球数字服务贸易网络存在贸易集聚效应和"小世界"高度聚类特征,数字服务最终品出口网络的发展侧重体现在贸易深度维度,数字服务中间品出口网络则在广度和深度维度均有所增加;全球数字服务贸易网络可以划分为分别以美国、英国为中心经济体的亚太、欧洲两个贸易群,且存在"全球化—区域化—全球化"的社团变迁趋势;美国和英国处于该网络的"绝对中心枢纽"地位,对全球数字服务贸易有重要的掌控力,与美、英相比,中国在全球数字服务贸易网络中的地位尚存在一定的上升空间,但是逐步攀升趋势明显;传统引力模型的显著影响要素在一定程度上依旧能够解释数字服务贸易网络的形成,互联网基础设施及其连通性和跨境数据自由流动对数字服务贸易网络的形成具有正向促进作用。研究创新:构建数字服务贸易量化评估框架,从多维层面综合评估全球数字服务贸易网络格局。研究价值:为中国数字服务贸易高质量发展研究提供了实验证据支持。

Research Objectives:In-depth analysis of the global digital service trade network topology,dynamic change structure and the influence mechanism of significant elements.Research Methods:Based on the perspective of product heterogeneity,social network analysis technology is used to construct a global digital service trade network,which is analyzed from the overall level of the overall structure,the meso level of the organizational change structure,and the individual level of the importance of nodes.Research Findings:During the sample period,the global digital service trade network has the characteristics of trade agglomeration effect and"small world"high clustering.The development of digital service final goods export network is mainly reflected in the dimension of trade depth,while the digital service intermediate goods export network has increased in both breadth and depth dimensions.The network of global digital service trade can be divided into two trade groups,namely Asia-Pacific and Europe,with the United States and the United Kingdom as the central economies respectively,and there is a"globalization-regionalization-globalization"community change trend.The United States and the United Kingdom are in the"absolute central hub"position of the network,and have an important control power over the global digital service trade.Compared with the United States and the United Kingdom,China’s position in the global digital service trade network still has some room for improvement,but the gradual upward trend is obvious.The significant influence factors of the traditional gravity model can still explain the formation of the digital service trade network to some extent,and the Internet infrastructure and its connectivity and the free flow of cross-border data have a positive role in promoting the formation of the digital service trade network.Research Innovations:Construct a quantitative evaluation framework for digital service trade,and comprehensively evaluate the global digital service trade network pattern from a multi-dimensional perspective.Research Value:It provides experimental evidence support for the research on China’s participation in the high-quality development stage of digital service trade.