Zhai Ziyu, Fu Xiaoling, Yi Ming, Sheng Mingyue, Guang Fengtao
School of Economics and Management, China University of Geosciences, Wuhan, Hubei, China.
Energy Centre, Business School, The University of Auckland, Auckland, New Zealand.
Environ Sci Pollut Res Int. 2022 May;29(22):32749-32762. doi: 10.1007/s11356-021-17871-y. Epub 2022 Jan 11.
Public transportation is often considered as a green travel mode to alleviate the negative externalities such as traffic congestion and haze pollution generated from transport. However, is prioritizing urban public transportation actually conducive to haze emission reduction? In this study, considering special emphasis on the cumulative effect of haze, a dynamic panel model is constructed to analyze and quantify the impact of public transportation on haze pollution by using the data of 284 cities in China, and the heterogeneity of the impact in cities with different pollution levels is examined. Several interesting findings are derived from the empirical results. First, the development of urban public transportation can significantly alleviate urban haze pollution. Second, the haze reduction effect of public transportation in cities with different pollution levels is non-universal. Comparatively speaking, the haze reduction effect of public transportation in lightly polluted cities is more evident than that in heavily polluted cities. Therefore, in order to reduce haze pollution in a more effective manner, China should continue to promote urban public transportation priority strategy. Moreover, the government should also formulate differentiated traffic development strategies to effectively alleviate the urban traffic burdens.
公共交通通常被视为一种绿色出行方式，以减轻交通产生的诸如交通拥堵和雾霾污染等负面外部效应。然而，优先发展城市公共交通实际上是否有利于减少雾霾排放呢？在本研究中，特别考虑到雾霾的累积效应，构建了一个动态面板模型，利用中国284个城市的数据来分析和量化公共交通对雾霾污染的影响，并考察不同污染水平城市中这种影响的异质性。实证结果得出了一些有趣的发现。第一，城市公共交通的发展能够显著减轻城市雾霾污染。第二，公共交通在不同污染水平城市的雾霾减排效果并非普遍一致。相对而言，公共交通在轻度污染城市的雾霾减排效果比在重度污染城市更为明显。因此，为了更有效地减少雾霾污染，中国应继续推进城市公共交通优先战略。此外，政府还应制定差异化的交通发展战略，以有效减轻城市交通负担。
