环境规制、绿色技术创新与碳生产率

Environmental Regulation,Green Technological Innovation and Carbon Productivity

提高碳生产率既是构建中国特色低碳发展道路的必然要求,也是促进中国经济发展方式转变和区域经济协调可持续增长的内在要求。本研究选取2010—2021年中国30个省份面板数据作为样本,实证检验环境规制对碳生产率的影响作用,并考察绿色技术创新在二者间的中介效应。研究结果证明,环境规制、绿色技术创新均可正向提高碳生产率。中介效应显示,环境规制可通过推动绿色技术创新提高碳生产率。门槛效应表明,在较高环境规制强度下,绿色技术创新对碳生产率的推动作用更为显著。空间溢出效应显示,环境规制对碳生产率的推动作用具有明显正向空间溢出效应。区域异质性显示,环境规制对碳生产率的影响呈现“东部地区>中部地区>东北地区>西部地区”依次递减态势。据此,提出切实提高环境规制强度、持续深化绿色低碳科技创新、合理制定区域生态协同发展政策,为制定绿色发展战略提供政策启示。

Improving carbon productivity is not only an inevitable requirement for constructing a low carbon development path with Chinese characteristics,but also an intrinsic requirement for promoting the transformation of China’s economic development mode and the coordinated and sustainable growth of regional economy.The panel data of 30 provinces in China from 2010 to 2021 were taken as samples to empirically test the impact of environmental regulation on carbon productivity,and to investigate the mediating effect of green technology innovation between the two.The results show that both environmental regulation and green technology innovation can positively improve carbon productivity.The mediating effect shows that environmental regulation can improve carbon productivity by promoting green technology innovation.The threshold effect indicates that green technology innovation has a more significant promoting effect on carbon productivity under higher environmental regulation intensity.The spatial spillover effect shows that environmental regulation has an obvious positive spatial spillover effect on carbon productivity.Regional heterogeneity shows that the impact of environmental regulation on carbon productivity is decreasing in the order of“eastern region>central region>northeast region>western region”.Therefore,it is proposed to effectively improve the intensity of environmental regulation,continue to deepen green and low carbon scientific and technological innovation,and rationally formulate regional ecological coordinated development policies so as to provide policy inspiration for the formulation of green development strategy.