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- Title
数字经济对碳排放强度的影响机制及空间效应.
- Authors
霍晓谦; 张爱国
- Abstract
Against the dual background of a booming digital economy and severe pressure on carbon emission reduction, the article selects panel data of 252 prefecture-level and above cities in China from 2011-2019, firstly measures the level of digital economy development in each city using the entropy weight method, and uses nighttime lighting data to infer the CO2 emissions of each city in reverse, and then applies the fixed-effects model. Afterwards, a multi-dimensional empirical examination of the influence mechanism, spatial spillover effect and heterogeneity of digital economy development on carbon emission intensity was conducted using a fixed-effects model, a mediated-effects model and a spatial Durbin model. It was found in general, the level of digital economy development in China has been increasing and the gap between cities has been narrowing, while the carbon emission intensity has been decreasing and the gap between cities has been widening. On a national scale, the development of the digital economy can significantly reduce the carbon emission intensity of cities, and the upgrading of industrial structure and technological innovation are important mechanisms for the digital economy to reduce carbon emission intensity. There is a significant positive spatial correlation between the level of development of the digital economy and carbon emission intensity in each city, and the digital economy can reduce the carbon emission intensity of neighbouring regions through spatial spillover effects. Moreover, the impact of the digital economy on carbon emission intensity is heterogeneous in terms of region, city level and city scale, with the digital economy playing a more significant role in reducing carbon emissions in central and western regions, peripheral cities and small and medium-sized cities than in eastern regions, central cities and large-scale cities.
- Subjects
CHINA; CARBON dioxide mitigation; FIXED effects model; HIGH technology industries; CARBON emissions; TECHNOLOGICAL innovations; INNER cities; CARBON nanofibers; TOTAL shoulder replacement
- Publication
Environmental Science & Technology (10036504), 2022, Vol 45, Issue 12, p182
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.1311.22.338