Abstract: This paper uses panel data of Chinese cities from 2010—2019 and double difference method to empirically analyze the construction of the new western landsea corridor to study the impact of the construction of the new western landsea corridor on the economic development of node cities. It is found: 1） the construction of the new western landsea corridor has a significant enhancement effect on the growth of real GDP of node cities， but has a significant inhibitory effect on the growth rate of real GDP; 2） the construction of the new western landsea corridor has a significant boosting effect on the real GDP of the cities in the central and western parts of the corridor， and a negative effect on the real GDP growth rate of the cities in the eastern part of the corridor than that of the cities in the central and western parts of the corridor; the construction of the new western landsea corridor contributes significantly more to the real GDP of cities with lower education level than those with higher education level， and has a significant negative effect on the real GDP growth rate of cities with higher education level; 3） there is no spatial spillover effect of the economic development of the node cities of the new western landsea corridor on the neighboring areas.

Key words: the new western landsea corridor; node cities; economic impact; double difference model; space Dubin model

摘要： 采用2010—2019年中国各城市的面板数据和双重差分法，实证分析西部陆海新通道建设，研究其对节点城市经济发展的影响。对节点城市实际GDP的增长有着显著的提升作用，但是对实际GDP增长率具有显著的抑制作用；对沿线中西部城市的实际GDP具有显著促进作用，对东部城市实际GDP增长率的负向影响大于中西部城市；对教育水平较低城市的实际GDP贡献明显高于教育水平较高的城市，对教育水平较高城市的实际GDP增长率有显著负向影响；节点城市经济发展对邻近地区不存在空间上的溢出效应。

关键词: 西部陆海新通道；节点城市；经济影响；双重差分模型；空间杜宾模型