数字基础设施建设是否促进碳生产率的提升？——基于省际面板数据的实证分析

Does the Construction of Digital Infrastructure Promote an Improvement in Carbon Productivity?—An Empirical Analysis Based on Provincial Panel Data

摘要: 利用2010~2021年30个省份的面板数据，构建数字基础设施指标体系，运用空间面板回归和双固定效应等多模型实证考察数字基础设施提升碳生产率的影响。研究结果表明：数字基础设施建设提升碳生产率的影响存在显著的正向促进作用，经过一系列的检验该结果仍成立；增长极、交易成本、资源错配以及技术创新效应是数字基础设施赋能碳生产率提升的潜在传导机制；数字基础设施在中部、非老工业区和数字经济发达省份可以显著提升碳生产率；进一步分析表明，数字基础设施对碳生产率的提升存在显著的空间自相关性和溢出效应，在提高本土区域碳生产率的同时，对邻近区域碳生产率产生促进作用；本文丰富了数字基础设施提升碳生产率的路径研究，为政府加强统筹规划，重塑省域间信息交互模式，推动实现绿色低碳发展提供政策启示。

Abstract: Using panel data from 30 provinces in China from 2010 to 2021, a set of digital infrastructure indicators was constructed, and the impact of digital infrastructure on carbon productivity was empirically examined using spatial panel regression and double fixed effect models. The results show that the promotion of digital infrastructure construction has a significant positive impact on carbon productivity, which remains valid after a series of tests; the growth pole, transaction cost, resource misallocation, and technological innovation effects are the potential transmission mechanisms through which digital infrastructure empowers carbon productivity improvement; digital infrastructure can significantly improve carbon productivity in central, non-old industrial areas, and digital economy-developed provinces; further analysis shows that digital infrastructure has significant spatial autocorrelation and spillover effects in improving carbon productivity, improving the carbon productivity of the local region while promoting the carbon productivity of neighboring regions; finally, this paper enriches the study on the pathways of digital infrastructure improving carbon productivity and provides policy implications for governments to strengthen overall planning, reshape inter-provincial information interaction modes, and promote green and low-carbon development.