Pathways of the Digital Economy’s Impact on Green Total Factor Productivity in the Construction Industry

The rapid development of the digital economy (DE) has provided innovative solutions for the transformation and upgrade of the construction industry. Leveraging technologies such as intelligent management, the Internet of Things, and artificial intelligence effectively enhances the construction industry’s green total factor productivity (GTFP). Based on data from 30 Chinese provinces spanning 2012 to 2022, this paper systematically investigates the mechanisms through which the DE influences the GTFP of the construction industry from multiple dimensions, including direct effects, indirect effects, and threshold effects. The findings reveal that the DE significantly promotes the improvement of GTFP in the construction industry. The DE indirectly enhances GTFP through technological innovation and environmental regulation, with the mediating effect of technological innovation being more pronounced. Urbanization exhibits a significant single-threshold effect in moderating the relationship between the DE and GTFP, with the impact of the DE on GTFP following a “U-shaped” trajectory.