【摘要】 进入新世纪以来，中国大规模投资建设高速铁路，“八纵八横”高铁网络基本形成。文章分析高铁开通对城市碳排放的影响及其可能的影响机制，并采用2003-2015年中国283个地级及以上城市的面板数据，将高铁开通视为“准自然实验”,构建渐进DID模型和空间渐进DID模型进行回归分析。研究发现：高铁开通可以降低城市碳排放，且该作用是通过产业结构优化、经济集聚程度等机制产生的。高铁开通不仅会降低该城市的碳排放，还通过空间技术外溢降低邻近城市的碳排放。高铁开通对城市碳排放的影响与城市的地理位置和规模有关。更多还原

【Abstract】 Since the beginning of the new century, China has invested massively in the construction of high-speed railways, forming a basic "eight vertical and eight horizontal" high-speed railway networks. By analyzing the impact of opening high-speed railway on urban carbon emission and its possible impact mechanism, this paper regards high-speed railway opening as a "quasi natural experiment" with panel data of 283 cities at prefecture-level and above in China from 2003 to 2015 to construct a progressive DID model and a spatial progressive DID model for regression analysis. According to the results, the opening of high-speed railway can reduce urban carbon emission, which are generated through mechanisms such as industrial structure optimization and economic agglomeration. It reduces the carbon emission not only in the cities, but also in neighboring cities through spatial spillover. And the above effects are related to the geographical location and scale of cities.更多还原