数字经济核心产业集聚赋能新质生产力发展:理论机制与实证检验

The Core Industrial Cluster in Digital Economy Empowers the Development of New Quality Productive Forces:Theoretical Mechanisms and Empirical Tests

基于2013—2022年中国286个地级及以上城市面板数据,实证分析数字经济核心产业集聚对新质生产力发展的影响效应与作用机制。结果证实,数字经济核心产业集聚对新质生产力发展具有显著正向影响,且该结论经过内生性问题处理以及样本缩尾处理、替换测算方法、考虑政策外生冲击在内的稳健性检验后,结果依然成立。异质性检验发现,数字经济核心产业集聚对新质生产力发展的影响呈现“东部>西部>东北>中部”、“一线城市>二线及以下”的差异分布格局。作用机制检验结果表明,科学技术突破、生产要素配置与产业结构升级在数字经济核心产业集聚对新质生产力发展的影响中发挥中介作用。因此,提出以打造数字集群为主线、以区域协同发展为抓手、以前沿技术突破为重点,希冀为新质生产力发展提供有益参考。

Based on panel data from 286 prefecture level and above cities in China from 2013 to 2022,this study empirically analyzes the impact and mechanism of core industrial cluster in digital economy on developing new quality productivity.The results confirm that the cluster of core industries in the digital economy has a significant positive impact on the development of new quality productivity,which is still valid after endogeneity issues,Winsorize reduction,replacement of measurement methods,and robustness tests considering policy exogenous shocks.The impact of core industrial cluster on the development of new quality productive forces suggests a tendency from high to low is:East region,West region,Northeast region and Central region,with first-tier cities higher than second-tier and below at the same time,according to heterogeneity test.The test of the mechanism of action indicates that breakthroughs in science and technology,allocation of production factors,and upgrading of industrial structure play a mediating role in the influence on the development of new quality productivity.Therefore,it is beneficial to take the construction of digital clusters as the guideline,and focus on regional collaborative development and advanced technological breakthroughs,in developing new quality productive forces.