数字经济对产业链高质量发展的影响及空间溢出效应

基于数字经济在创新、协调、绿色、开放和共享五个方面对产业链高质量发展产生的影响，构建产业链高质量发展评价指标体系。利用2011-2021年省级面板数据，探索数字经济赋能产业链高质量发展的内在机理，特别是分析其空间溢出效应。结果表明：数字经济发展能显著促进产业链高质量发展水平提升。数字经济与产业链高质量发展均存在显著的空间集聚性，数字经济具有显著的正向空间溢出效应。异质性分析结果表明数字经济对产业链创新、协调、共享发展的影响更为显著，南方地区的影响要强于北方地区。

Impacting of Digital Economy on High Quality Development of Industrial Chain and Spatial Spillover Effect

Based on the impacts of the digital economy on the high-quality development of the industrial chain in terms of innovation, coordination, greenness, openness, and sharing, a comprehensive evaluation index system for the high-quality development of the industrial chain is constructed. Using provincial panel data from 2011 to 2021, this study explores the underlying mechanisms of how the digital economy empowers the high-quality development of the industrial chain, with a particular focus on analyzing its spatial spillover effects. The results indicate that the development of the digital economy significantly promotes the improvement of the high-quality development level of the industrial chain. Both the digital economy and the high-quality development of the industrial chain exhibit significant spatial clustering, with the digital economy showing significant positive spatial spillover effects. Heterogeneous analysis results suggest that the impact of the digital economy on the innovation, coordination, and sharing development of the industrial chain is more pronounced, especially in the southern region compared to the northern region.