向洪金;涂海燕;

• 1:南京审计大学经济学院

摘要：

基于中国31个省份2013-2020年面板数据，采用面板熵值法构建了数字经济发展水平综合指标体系，对省域数字经济发展水平进行准确测度；然后在邻接矩阵、地理距离矩阵、经济地理嵌套矩阵下，使用空间杜宾模型实证研究数字经济发展对我国出口贸易的影响。研究发现：数字经济发展通过降低信息收集成本与市场进入门槛水平，从而对我国出口贸易具有显著的促进作用，且在经济地理嵌套矩阵下的空间效应最突出；数字经济发展水平带动区际之间的良性竞争，对地理距离关联省份的出口贸易产生正向的空间溢出效应，但由于经济发展不均衡和获取资源的不及时，在邻接矩阵和经济地理嵌套矩阵下，间接效应不显著。

关键词： 数字经济;出口贸易;空间溢出;面板数据;空间杜宾模型

Abstract: Based on the panel data of 31 provinces in China from 2013 to 2020, the development level of digital economy in provinces were accurately measured, and then the influence of digital economy development on China's export trade was empirically studied by using spatial Durbin model under adjacency matrix, geographical distance matrix and economic geography nested matrix. The results show that: The development of digital economy plays a significant role in promoting China's export trade by reducing the cost of information collection and the level of market entry threshold, and the spatial effect is most prominent under the economic geography nesting matrix; The development level of digital economy drives the healthy competition among regions, which has a positive spatial spillover effect on the export trade of geographically related provinces. However, the indirect effect is not significant under the adjacency matrix and economic geography nesting matrix due to the unbalanced economic development and the untimely acquisition of resources.

Keywords: digital economy;export trade;space overflow;panel data;spatial Dubin model

基金项目: 教育部人文社科基金项目“动态博弈视角下应对中美贸易摩擦的战略策略研究”(20YJCGJW005);; 江苏省研究生科研与实践创新计划项目“投资便利化影响中国FDI的理论与实证”(KYCX21＿1846)

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