Revealing the transmission mechanism and spatial spillover of carbon emission reduction caused by high-speed rail opening

Meiyu Liu, Xiaogeng Niu and Zhenxing Tian

PLOS ONE, 2022, vol. 17, issue 8, 1-17

Abstract: In the context of China’s commitment to peak carbon emissions by 2030 and achieve carbon neutrality by 2060, as well as its strategy to build a strong transportation country, it is of foremost importance to study the carbon emission reduction effect of the opening of high-speed rail (HSR). This paper innovatively introduces the frequency of HSR stops as an indicator of HSR operation, and uses a time-varying difference-in-difference (DID) model, a mediating effect model and a spatial DID model to assess the direct and indirect impact, transmission mechanism, and spatial spillover effects of the opening and operation of HSR on carbon emission reduction based on a panel of 279 prefecture-level cities from 2003 to 2017. We found that the opening and operation of HSR significantly reduced urban carbon emissions. The direct transmission mechanism analysis shows that the opening of HSR can reduce carbon emissions by replacing highway passenger traffic. Indirect mechanism analysis shows that the opening of HSR can reduce carbon emissions through technological effect, structural effect and opening effect. The test of spatial spillover effect shows that the opening of HSR can promote carbon emission reduction not only in node cities, but also in neighboring cities.

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0271585

DOI: 10.1371/journal.pone.0271585

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