当代经济科学2025，Vol.47Issue(4)：36-50,15.DOI:10.20069/j.cnki.DJKX.202504003
数字经济赋能绿色发展的可持续性机制研究
Research on Sustainable Mechanism of Digital Economy Enabling Green Development
摘要
Abstract
"Digitalization"and"greening"are key directions for China's future economic development and important driving forces and goals for achieving high-quality development in the new era.The digital economy,with its unique advantages,helps foster emerging industries,create new business models,and promote the ecologicalization of the economy,thus creating new growth points for China's sustainable development.The integrated development of"economy+ecology"has gradually attracted high attention from the government and academia.Based on this,this paper explores whether the digital economy can enhance the efficiency of urban green development and its mechanism of action. This study,based on the previous understanding of the linear causal relationship between the digital economy and green development,delves into the non-linear relationship between them.Using panel data from 257 prefecture-level and above cities in China from 2011 to 2019 and the"proximity"data of over 5,000 key enterprises across the country generated by Word2Vec and TF-IDF machine learning models,including cognitive,organizational,social,institutional,and geographical aspects,a two-way fixed effect model is constructed.Corresponding robustness tests and heterogeneity analyses are conducted to explore the impact of the digital economy's development level on urban green development efficiency from the perspective of proximity,as well as the threshold effects of the digital economy itself,social and economic development,and the proximity atmosphere on their relationship. The research proves that:First,the digital economy has a significant positive impact on urban green development efficiency.This conclusion remains reliable after controlling for macro factors,introducing instrumental variables,and lagging the control variables by one period for robustness tests.Second,green technological innovation plays an important mediating role in the process of the digital economy enhancing green development efficiency.Third,when the development level of the digital economy is used as the threshold variable for threshold model regression,it passes the double threshold test.Within each threshold interval,the regression coefficient remains significantly positive but decreases,indicating that the impact effect on urban green development efficiency gradually weakens after crossing the threshold value.Fourth,when the proximity level of enterprises is used as the threshold variable for threshold model regression,it passes the single threshold test.That is,when the geographical,social,institutional,and cognitive proximity levels reach certain thresholds,the development level of the digital economy better promotes green development efficiency.This study concludes that the sustainability of the digital economy promoting green development stems from the overall critical mass of a region or city,which not only includes the digital economy and technological development itself but also has important connection with economic and social development,as well as the superposition and interweaving of innovation elements. The marginal contribution of this paper can be summarized in three points:(1)Using Word2Vec and TF-IDF machine learning models to generate five major"proximity"data of cognition,organization,society,institution and geography of more than 5,000 key enterprises nationwide,and subsequently constructing an indicator system of the proximity development levels for major cities in China,thus reconstructing and upgraing the traditional empirical econometric model to examine the causal relationship between the digital economy and urban green development efficiency;(2)Analyzing the possible non-linear relationship between the development level of digital economy and urban green development efficiency,and assessing the sustainability of the existing relationship;(3)Using the digital economy,economic development level,and various enterprise proximity dimensions as threshold variables to identify the key factors leading to the non-linear relationship between them,and providing empirical reference for proposing targeted sustainable green development policies.关键词
数字经济/绿色发展效率/绿色技术创新/邻近理论/门槛效应/可持续发展Key words
digital economy/green development efficiency/green technological innovation/proximity theory/threshold effect/sustainable development引用本文复制引用
姚芳,赵锴,夏俊馨..数字经济赋能绿色发展的可持续性机制研究[J].当代经济科学,2025,47(4):36-50,15.基金项目
国家社会科学基金后期资助项目暨优秀博士论文项目"中国区域创新驱动发展机制研究:基于创新人才群体视角"(22FJYB008). （22FJYB008）
