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Does high-speed rail improve China’s urban environmental efficiency? Empirical evidence from a quasi-natural experiment

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Abstract

Whether high-speed rail (HSR) can promote the coordination between the economy and environment is a critical issue that needs to be investigated. We used balanced panel data of 281 prefecture-level or above cities in China from 2005 to 2017 to consider the opening of HSR as a quasi-natural experiment. We integrated the difference-in-differences (DID) model, the spatial difference-in-differences (SDID) model, and social network analysis (SNA) to empirically investigate the impact of HSR on urban environmental efficiency (UEE). The results showed that HSR significantly improved UEE by 4.6% annually during the study period, although the effect of HSR on UEE exhibited a time lag and varied dramatically in different cities. An analysis of the mechanism showed that the effect of technological innovation and the structural effect brought by the opening of HSR were the main contributors to the improved UEE. Further analysis showed that HSR service centrality also significantly improved UEE and HSR opening and HSR service centrality both had positive spatial spillover effects on the UEE of neighboring cities. Several policy implications are proposed accordingly to make full use of the advantages of HSR to improve UEE for China.

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  1. See: http://www.gov.cn/xinwen/2016-07/20/content_5093165.htm

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Acknowledgments

The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (Nos. 71973131 and 71973132) and a Major Project of the National Social Science Foundation of China (Nos. 19VHQ002 and 21AZD067).

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Conceptualization: Ke-Liang Wang. Formal analysis: Su-Qin Pang and Fu-Qin Zhang. Data curation: Su-Qin Pang and Fu-Qin Zhang. Writing—original draft: Ke-Liang Wang and Su-Qin Pang. Writing—review and editing: Su-Qin Pang, Ke-Liang Wang and Yun-He Cheng. Supervision: Zhuang Miao, Ke-Liang Wang, and Hua-** Sun.

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Correspondence to Ke-Liang Wang.

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The authors declare no competing interests.

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Wang, KL., Pang, SQ., Zhang, FQ. et al. Does high-speed rail improve China’s urban environmental efficiency? Empirical evidence from a quasi-natural experiment. Environ Sci Pollut Res 29, 31901–31922 (2022). https://doi.org/10.1007/s11356-021-18027-8

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  • DOI: https://doi.org/10.1007/s11356-021-18027-8

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