数字经济、产业集中度与贸易规模——基于中国上市公司数据的实证分析

Digital Economy,Industrial Concentration and Trade Scale——An Empirical Analysis Based on the Data of China’s Listed Companies

本文基于2012—2020年中国进出口上市公司数据,运用系统GMM方法,实证分析了数字经济对中国进出口贸易规模的影响及产业集中度的调节作用。结果表明:数字经济对中国贸易规模扩大具有显著的促进作用;产业集中度在数字经济赋能贸易规模扩大的过程中发挥了重要的正向调节作用,但数字经济的直接赋能效果与产业集中度的调节效应在不同产业之间存在差异。最后,针对数字经济促进贸易发展过程中出现的问题提出相应的政策建议。

Based on the data of China’s listed import and export companies from 2012 to 2020,this article empirically analyzes the impact of the digital economy on China’s import and export trade scale and the moderating effect of industrial concentration by using the system GMM.The results show that the digital economy plays a significant role in promoting the expansion of China’s trade scale;industrial concentration plays an important positive moderating role in the expansion of the digital economy enabling the trade scale.However,the direct empowering effect of the digital economy and the moderating effect of industrial concentration differ among different industries.Finally,the study puts forward corresponding policy suggestions for the problems in the process of digital economy promoting trade development.