高铁开通对中国航空客运网络连通性的影响

为了科学优化中国航空客运网络发展，选取2000—2018年中国定期通航的运输机场所在地级及以上城市的非平衡面板数据，将高铁开通视为一项准自然实验，采用多期双重差分模型实证分析高铁开通对中国航空客运网络连通性水平的影响。研究发现：高铁开通显著提升了中国航空客运网络连通性水平；高铁开通对节点中心性的提升作用不受该城市所处区域的影响，均有显著的促进作用，对东部城市中心性的促进作用大于中西部城市。

The Impact of Opening of High-speed Railway on the Connectivity of China's Air Passenger Transport Network

In order to scientifically optimize the development of China''s air passenger transport network, the unbalanced panel data of the prefecture-level and above cities of China''s regularly operated transport airports from 2000 to 2018 are selected, and the opening of high-speed rail is regarded as a quasi-natural experiment. The multi-period differential model is used to empirically analyze the impact of high-speed rail opening on China''s air passenger transport network connectivity. The results show that the opening of high-speed rail significantly improves the connectivity level of China''s air passenger transport network.The opening of high-speed rail has a significant promoting effect on the node centrality regardless of the region of the city, and the promoting effect on the centrality of the eastern city is greater than that of the central and western cities.