High-speed rail opening and urban air quality

IF 3.5 2区经济学 Q1 ECONOMICS

Regional Science and Urban Economics Pub Date : 2025-07-04 DOI:10.1016/j.regsciurbeco.2025.104134

Zhilong Qin , Xiaoguang Chen , Luoye Chen

引用次数: 0

Abstract

We quantify the air quality impact of China's first major HSR line connecting Beijing and Shanghai, operational since June 30, 2011. Using high-resolution satellite data, we find a 6.2 % reduction in particulate matter concentrations in counties served by the HSR during the six months following its opening, with effects strengthening over time and persisting for at least two years. These improvements are larger in counties with HSR stations, high interregional travel demand, or limited alternative transportation options. We estimate that the HSR opening yields external health benefits of approximately CNY 21 billion annually, accounting for a substantial portion of its construction costs.

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高铁开通与城市空气质量

我们量化了自2011年6月30日开始运营的连接北京和上海的中国第一条主要高铁线路对空气质量的影响。利用高分辨率卫星数据，我们发现在高铁开通后的六个月里，高铁服务的县的颗粒物浓度降低了6.2%，而且随着时间的推移，效果会越来越强，至少会持续两年。在有高铁站点、区域间旅行需求高或替代交通选择有限的县，这些改善更大。我们估计，高铁开通每年产生的外部健康效益约为210亿元人民币，占其建设成本的很大一部分。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Regional Science and Urban Economics Multiple-

CiteScore

5.30

自引率

9.70%

发文量

期刊介绍： Regional Science and Urban Economics facilitates and encourages high-quality scholarship on important issues in regional and urban economics. It publishes significant contributions that are theoretical or empirical, positive or normative. It solicits original papers with a spatial dimension that can be of interest to economists. Empirical papers studying causal mechanisms are expected to propose a convincing identification strategy.