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Exploring the Carbon-Mitigation Effect of High-Speed Railway and Its Underlying Mechanism

Author

Listed:
  • Yake Gao

    (School of Economics, China-ASEAN Institute of Financial Cooperation, Guangxi University, Nanning 530004, China)

  • Yawei Zhang

    (School of Economics, China-ASEAN Institute of Financial Cooperation, Guangxi University, Nanning 530004, China)

  • Kelly Yujie Wang

    (School of Economics, China-ASEAN Institute of Financial Cooperation, Guangxi University, Nanning 530004, China
    Guangxi Development Strategy Research Institute, Guangxi University, Nanning 530004, China)

  • Tsz Leung Yip

    (Department of Logistics and Maritime Studies, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China)

Abstract

Existing studies on high-speed railway (HSR) and carbon dioxide (CO 2 ) emissions have focused on analyzing their net effect, paying less attention to HSR’s impact mechanism on CO 2 emissions. This paper investigates the influence and underlying mechanism of HSR on CO 2 emissions. We apply a time-varying difference-in-differences approach to panel data from 283 cities in China between 2003 and 2016 to analyze HSR’s carbon-mitigation effects. A causal three-path mediation model and bootstrap method are utilized to analyze how HSR contributes to CO 2 mitigation. The results show that HSR operations have significant carbon-mitigation effects, especially in the eastern regions and large cities of China. Moreover, the carbon-mitigation effect of HSR tends to amplify over time. Mechanism analysis showed that HSR’s carbon-mitigation effects are realized through four pathways: transportation substitution, economic agglomeration, industrial structuring, and technological innovation, with the last one contributing the most. This paper provides practical policy recommendations for the next phase of carbon governance in China.

Suggested Citation

  • Yake Gao & Yawei Zhang & Kelly Yujie Wang & Tsz Leung Yip, 2023. "Exploring the Carbon-Mitigation Effect of High-Speed Railway and Its Underlying Mechanism," Sustainability, MDPI, vol. 15(17), pages 1-17, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:12725-:d:1222841
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    References listed on IDEAS

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