数字经济与中国工业绿色全要素生产率增长

Digital Economy and Green Total Factor Productivity Growth of China’s Industry

在构建"双循环"发展新格局背景下,数字经济的绿色价值日益突显,应重点关注数字经济对中国工业绿色全要素生产率的影响机制。采用以DDF模型为基础,构建Malmquist-Luenberger生产率指数来测度中国工业绿色全要素生产率,并以地区行业规模、制度环境为门槛变量构建门槛模型,以此分析数字经济与绿色全要素生产率的非线性化特征。数字经济可以从整体上显著提升中国工业绿色全要素生产率,还存在以地区行业规模、制度环境为门槛变量的单一门槛效应,分别呈现出边际递增的非线性特点和U型关系及区域化差异特征。进一步稳健性检验发现,数字经济对中国工业GTFP具有不同分位数影响。在生态文明建设约束下,本文利用DEA-SBM模型将传统全要素生产率包含了相关的非期望产出,并利用GML生产率指数将绿色全要素生产率按区域进行分类测算。数字经济不仅可以赋能予传统工业企业,而且具有绿色价值,可以为中国后疫情时代实现数字经济高质量发展,加快完成国家"六稳六保"目标总任务,成为构建国内国际"双循环"发展新格局的重要推动力。

Under the background of building a new pattern of"double cycle"development,the green value of digital economy is increasingly prominent,and we should focus on the mechanism of digital economy’s impact on green total factor productivity of China’s industry.Based on DDF model,Malmquist Luenberger productivity index is constructed to measure China’s industrial green total factor productivity,and threshold model is constructed with regional industry scale and institutional environment as threshold variables to analyze the nonlinear characteristics of digital economy and green total factor productivity.Digital economy can significantly improve China’s industrial green total factor productivity on the whole,and there is a single threshold effect with regional industry scale and institutional environment as threshold variables,showing the nonlinear characteristics of marginal increase,U-shaped relationship and regional differences;further robustness test shows that digital economy has different scores on China’s industrial GTFP Number of digits.Under the constraints of ecological civilization construction,this paper uses DEA-SBM model to include the relevant non expected output of traditional total factor productivity,and uses GML productivity index to classify green total factor productivity by region.Digital economy can not only empower traditional industrial enterprises,but also has green value.It can realize high-quality development of digital economy in China’s post epidemic era,accelerate the completion of the national"six stability and six guarantees"goal,and become an important driving force for building a new pattern of domestic and international"double cycle"development.