数字经济与绿色全要素生产率:来自黄河流域“五极”城市群的证据

Digital Economy and Green Total Factor Productivity:Evidence from“Five Poles”Urban Agglomeration in the Yellow River Basin

数字经济发展是推动黄河流域高质量发展的重要动力。论文基于2011—2019年黄河流域“五极”城市群的面板数据,在城市群视角下实证检验数字经济发展如何影响绿色全要素生产率(GTFP)。研究发现:黄河流域城市群数字经济能够显著提升绿色全要素生产率,且在空间维度具有正向溢出特征。克服潜在的内生性问题后,这一结论依然稳健;黄河流域数字经济发展对绿色全要素生产率的提升效应在不同的城市群维度、核心城市与非核心城市之间具有典型的异质性特征;机制分析表明,黄河流域城市群绿色全要素生产率提升主要源于数字经济所诱发的创新要素集聚。

The development of digital economy is an important driving force to promote the high-quality development of the Yellow River Basin.Based on the panel data of“five poles”urban agglomerations in the Yellow River Basin from 2011 to 2019,this paper empirically examines how the development of digital economy affects the green total factor productivity(GTFP)from the perspective of urban agglomerations.The results show that,the digital economy of urban agglomerations in the Yellow River Basin can significantly improve the green total factor productivity,and shows positive spillover feature in the spatial dimension.The results of robustness test also support the above conclusions.The promotion effect of digital economy development on green total factor productivity in the Yellow River Basin has typical heterogeneity characteristics in different urban agglomeration dimensions and between core cities and non-core cities.The mechanism analysis shows that the improvement of green total factor productivity of urban agglomerations in the Yellow River Basin mainly comes from the agglomeration of innovative factors induced by the digital economy.