长江经济带数字金融对产业绿色转型的影响：基于空间计量的实证分析

The Impact of Digital Finance on the Green Transformation of Industries in the Yangtze River Economic Belt: Empirical Analysis Based on Spatial Metrology

摘要: 在“双碳”目标下，探究数字金融(DF)对产业绿色转型(IGT)的影响，对于促进可持续发展至关重要。本文采用熵权法测度了2011~2021年长江经济带108个城市的IGT水平，并从时空角度实证考察了DF对IGT的影响机制。结果表明：1) DF能有效推动长江经济带当地IGT，但抑制了邻近地区的IGT。2) IGT整体增长迅速，区域内部呈现空间聚集和发展不平衡的区域特征。3) 空间阈值模型表明，DF对本地IGT的影响呈“U”型变化，对邻近地区IGT的影响呈“N”型，存在虹吸效应。长期来看，DF对区域IGT的促进作用正在逐步增大。4) 结合地理距离视角，发现DF的负向溢出效应持续到130 km，但从520 km~850 km，空间溢出效应显著为正。空间溢出效应随距离增长由负向变为正向，这表明城市群之间的协同交流能有效促进区域IGT的提升。

Abstract: Under the goal of “dual-carbon”, it is imperative to look at how digital finance (DF) affects industrial green transformation (IGT) to promote sustainable development. This research employs the entropy weight approach to assess the IGT for 108 cities in the economic belt of the Yangtze River during 2011 and 2021, and experimentally explores the mechanism of DF’s influence on IGT from a spatio-temporal perspective. The results show that: 1) DF can effectively promote local IGT in the Yangtze River Economic Belt, but suppresses IGT in neighboring regions. 2) The overall growth of IGT is rapid, with regional characteristics of spatial aggregation and unbalanced development within the region. 3) The spatial threshold model shows that the influence of DF on local IGT is in the “U” shape; the influence on neighboring regions’ IGT is in the “N” shape, with a siphoning effect; over time, the promotion impact of DF on regional IGT is gradually increasing. 4) Under the condition of considering geographical distance, it is discovered that the spillover impact of DF is negative in the range of 130 km, and positive in the range of 520 km~850 km. The spatial spillover effect changes from negative to positive with the increase of distance, which indicates that synergistic exchanges between urban agglomerations can effectively promote the enhancement of regional IGT.