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[Impact Mechanism and Threshold Effect of Digital Transformation on Coordinated Pollution and Carbon Reduction: An
Gao-Li Zhu1, Li Sheng2, Qing-Ke Yang1
1School of Public Administration, Nanjing University of Finance and Economics, Nanjing 210023, China.
Abstract:
Under the dual pressures of global climate change and environmental governance, achieving coordinated pollution reduction and carbon reduction has become a key pathway to promoting high-quality economic development and sustainable transformation. Resource-based cities, characterized by high energy consumption and high pollution in their industrial structures, are not only focal areas for carbon emission and pollution control but also face formidable challenges in achieving green transformation. This study, using a sample of 110 prefecture-level resource-based cities from 2010 to 2022, systematically examines the role and threshold effect of digital transformation on coordinated pollution and carbon reduction. The findings indicate that: ① Digital transformation contributed to promoting coordinated pollution and carbon reduction. ② Heterogeneity analysis revealed that digital transformation had the most significant effect on coordinated pollution and carbon reduction in eastern and growing cities, with the effect also evident but slightly lower in central, western, mature, and regenerating cities and weakest in northeastern and declining cities. ③ In the process by which digital transformation influenced coordinated pollution and carbon reduction, green technology innovation and the advancement of industrial structure acted as mediating factors. ④ There was a significant threshold effect in the impact of digital transformation on coordinated pollution and carbon reduction at different levels of energy efficiency. When energy efficiency was below the threshold of 12.030, the role of digital transformation was constrained by the consumption of high-energy infrastructure, resulting in weaker pollution and carbon reduction effects. However, as energy efficiency surpassed 12.030 and progressively increased to 12.299, the positive impact of digital transformation significantly strengthened. The article suggests measures such as improving energy efficiency, formulating targeted green transformation strategies, and establishing a unified emission monitoring and early warning platform.
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