数字经济促进碳减排的效应及机制

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Abstract In this paper, the digital economy of 274 prefecture-level and above cities in China from 2011 to 2019 was measured, and the effect of the digital economy on carbon emission reduction and the mechanisms were explored from both theoretical and empirical dimensions. The results showed that the digital economy significantly reduced carbon emissions. Specifically, for every 1% growth of the digital economy, the total and intensity of carbon emissions decreased by 0.491% and 0.966%, respectively. The positive effect of the digital economy became more and more significant over time. This conclusion still held after robustness tests such as selecting historical data as instrumental variables and selecting the "Broadband China" pilot project as a quasi-natural experiment. Eastern, non-resource and regenerative cities were better able to exploit the digital economy dividend and promote carbon emission reduction. The positive impact of the digital economy on carbon emission reduction had a threshold effect due to the difference in population size and innovation capacity of cities. The analysis of the mechanism showed that reducing energy consumption intensity, optimizing industrial structure, promoting technological progress and empowering digital infrastructure were important ways to achieve carbon emission reduction in the digital economy. For every 1% growth of the digital economy, the energy consumption intensity decreased by 0.154%, while the effects of industrial structure upgrading, technological progress and digital infrastructure empowerment increased by 0.835%, 1.032% and 0.351%, respectively.

Key words： digital economy carbon emission broadband China panel threshold model

Received: 26 December 2022

PACS:	X321
	F124
	F49

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	Articles by authors
	WANG Wei-guo
	WANG Yong-ling
	FAN Dan

Cite this article:

WANG Wei-guo,WANG Yong-ling,FAN Dan. Effects and mechanisms of the digital economy for carbon emission reduction[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 4437-4448.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I8/4437

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