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High-speed rail and city’s carbon productivity in China: a spatial difference-in-differences approach

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Abstract

Improving carbon productivity is an important measure to promote low-carbon development. Since high-speed rail (HSR) has both economic and environmental effects, it is particularly important to clarify the relationship between HSR development and carbon productivity. In this paper, 285 cities in China from 2007 to 2017 are used as a research sample, and the relationship between the opening of HSR and the city’s carbon productivity is studied using the spatial difference-in-difference method (SDID). The result shows that due to the intermediary effect of technological innovation and industrial structure, the opening of HSR significantly increases urban carbon productivity. At the same time, this influence has a significant positive spatial spillover effect. On average, when a city opens HSR, the local carbon productivity increases by 5.18%, and the carbon productivity of its neighboring cities increases by 13.52%. Overall, the positive effect of HSR on carbon productivity is more pronounced in the middle and western regions. However, the spatial spillover effect in the eastern region is significantly negative. These findings help to accurately assess the social benefits of HSR network expansion and provide important decision-making references for climate governance in the HSR era.

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Data availability

The datasets analyzed during the current study are not publicly available due the data comes from the undisclosed database of “Tongji University Regional Economic Research Institute Database,” but are available from the corresponding author on reasonable request.

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Contributions

All authors contributed to the study conception and design. Tuolei Wu and Shanlang Lin contributed equally to this manuscript. Methodology, data curation, and writing (original draft preparation) were performed by Tuolei Wu. Conceptualization, supervisor, and data curation were performed by Shanlang Lin. Visualization and writing (original draft preparation) were performed by Jingxian Wang. Software, validation, and writing (review and editing) were performed by Na Yan. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Na Yan.

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Wu, T., Lin, S., Wang, J. et al. High-speed rail and city’s carbon productivity in China: a spatial difference-in-differences approach. Environ Sci Pollut Res 30, 56284–56302 (2023). https://doi.org/10.1007/s11356-023-26297-7

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  • DOI: https://doi.org/10.1007/s11356-023-26297-7

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