数字基础设施建设对出口产业升级的影响研究

Research on the impact of digital infrastructure construction on export industry upgrading

在逆全球化趋势上升的背景下,数字基础设施建设如何赋能出口产业升级,是推动中国经济高质量发展和实现中国式现代化的重要内容。基于2005—2013年中国285个城市面板数据,以中国3G网络建设为准自然实验,采用双重差分法评估数字基础设施建设对中国出口产业升级的影响。结论表明:(1)数字基础设施有效推动了中国出口产业升级,在开展严格的识别假设条件和稳健性检验后,实证结果仍然是稳健的。(2)从影响机制看,数字基础设施建设通过提升创新效率和资源配置效率推动出口产业升级。(3)数字基础设施建设对那些初始技术水平好、高等级地区以及政府执行效率高的城市的出口产业升级效应更为显著。研究结论从数字基础设施建设的角度为中国出口转型升级提供了路径选择和政策参考。

In the context of the rising trend of anti-globalization,how to enable the upgrading of export industries in the construction of digital infrastructure is an important part of promoting the high-quality development of China’s economy and realizing Chinese path to modernization.Based on the Panel data of 285 cities in China from 2005 to 2013,and taking China’s 3G network construction as a quasi-natural experiment,the impact of digital infrastructure construction on the upgrading of China’s export industry is evaluated by using the double difference method.The conclusion indicates that:(1)digital infrastructure has effectively promoted the upgrading of China’s export industry.After conducting strict identification assumptions and robustness tests,the empirical results are still robust.(2)From the perspective of impact mechanism,the construction of digital infrastructure promotes the upgrading of export industries by improving innovation efficiency and resource allocation efficiency.(3)The construction of digital infrastructure has a more significant upgrading effect on export industries in cities with good initial technological level,high-level areas,and high government execution efficiency.The research conclusion of this article provides a path and policy reference for China’s export transformation and upgrading from the perspective of digital infrastructure construction.