城市群绿色低碳发展中开放与创新的作用机制研究—以京津冀区域为例

Research on The Mechanism of Opening Up and Innovation in Green and Low-carbon Development of Urban Agglomeration：Taking Beijing-Tianjin-Hebei Urban Agglomeration as an Example

摘要:

本文在2010-2021年面板数据基础上实证考察了开放与创新对京津冀城市群绿色低碳发展的作用机制。研究发现：FDI会引入高碳排放产业,显著促进碳排放强度增加；贸易开放对碳排放强度有抑制作用,但会受到城市经济发展水平影响。创新与碳排放强度呈显著倒“U”型非线性关系,即创新水平存在门槛值,只有达到该水平,创新促进碳排放降低的作用才会显现。本文还引入开放与创新的交互项,发现FDI、贸易开放与创新的交互作用可以抑制碳排放强度,但效果有差别,且FDI、贸易开放对创新与碳排放强度之间的非线性关系分别具有削弱效应和增强效应的调节作用。

Abstract:

Based on the panel data from 2010 to 2021 of Beijing-Tianjin-Hebei urban agglomeration, this paper empirically examines the mechanism of opening up and innovation in green and low-carbon development. The results show that FDI will introduce high-carbon emission industries and significantly promote the increase of carbon emission intensity. Trade openness has an inhibitory effect on carbon emission intensity, but it is affected by the level of urban economic development. There is a significant inverse U-shaped nonlinear relationship between innovation and carbon emission intensity, that is, there is a threshold value of innovation level, and the role of innovation in promoting carbon emission reduction will appear only when it reaches this level. This paper also adds the interaction item of opening up and innovation, and finds that the interaction of FDI, trade openness and innovation can inhibit carbon emission intensity, but the effect is different. FDI and trade openness respectively have a weakening regulating effect and an enhancing regulating effect on the nonlinear relationship between innovation and carbon emission intensity.