West Institute for Economic Research, Southwestern University of Finance and Economics, Liutai Avenue 555, Wenjiang District, Chengdu, 611130, China.
Research Institute of Economics and Management, Southwestern University of Finance and Economics, Chengdu, 611130, China.
Environ Sci Pollut Res Int. 2023 Apr;30(19):54694-54722. doi: 10.1007/s11356-023-25940-7. Epub 2023 Mar 7.
In 2011, aiming to achieve sustainable development in the transportation sector, the Chinese government started a pilot policy of low-carbon transportation system (LCTS). Based on the panel data for 280 prefecture-level cities in China from 2006 to 2017, we first measure carbon efficiency by using the SBM-DEA model, and identify the direct and spatial spillover effects of LCTS on carbon efficiency and carbon intensity by adopting a spatial difference-in-differences approach (SDID). The results indicate that LCTS construction not only enhances local carbon performance but also has a significant spatial spillover effect in neighboring cities. The results are still valid after a series of robustness tests. The mechanism analysis reveals that LCTS can elevate carbon performance by improving energy efficiency, green innovation, and developing public transit. The direct and indirect effects of LCTS on carbon performance show more pronounced effects in megalopolis and eastern region. This paper provides reliable empirical evidence for the effect of LCTS on carbon performance, which is conducive to deepening the understanding of carbon emissions and has a high reference value for the rational formulation of carbon reduction policies.
2011 年，为实现交通运输领域的可持续发展，中国政府启动了低碳交通系统（LCTS）试点政策。本文利用 2006-2017 年中国 280 个地级市的面板数据，首先采用 SBM-DEA 模型测算了碳效率，并采用空间双重差分法（SDID）识别了 LCTS 对碳效率和碳强度的直接和空间溢出效应。结果表明，LCTS 的建设不仅提高了当地的碳绩效，而且对邻近城市也具有显著的空间溢出效应。经过一系列稳健性检验后，结果仍然有效。机制分析表明，LCTS 通过提高能源效率、绿色创新和发展公共交通来提升碳绩效。LCTS 对碳绩效的直接和间接效应在特大城市和东部地区表现出更为显著的影响。本文为 LCTS 对碳绩效的影响提供了可靠的经验证据，有助于深化对碳排放的认识，对合理制定减排政策具有较高的参考价值。
