讲座题目：Transportation Network and Market Integration: Evidence from China（交通网络与市场整合：来自中国的证据）

主讲人：李晟昱 新南威尔士大学

讲座时间：2024年9月24日10:30

讲座地点：学院229

讲座内容摘要：

This paper examines the impact of China's expressway expansion between 1998 and 2007 on market integration and firm performance within the manufacturing sector. The rapid expansion of the transportation network significantly enhanced market connectivity, improving firms' access to both input and output markets and intensifying competition. We explore how individual firms are influenced by these changes in terms of productivity, intermediate input prices, and market power by developing a new approach to estimate these measures at the firm level. Our findings reveal that the expansion of the transportation network significantly improved firm centrality, leading to enhanced market access and increased competition. Improved upstream market access reduced input prices and raised markups, while better downstream access boosted productivity. Although increased competition exerted countervailing pressures, the effects of market access dominated. In addition, lower-performing firms, particularly those with lower productivity, higher input prices, and lower markups, benefited more from the network improvement, and consequently leads to regional convergence.

本文研究了中国在1998年至2007年间高速公路扩展对制造业市场整合和企业绩效的影响。交通网络的快速扩展显著增强了市场的连通性，提高了企业在投入和产出市场的可达性，并加剧了竞争。我们通过开发新的方法来估算企业层面的生产率、中间投入价格和市场势力，探索单个企业如何受到这些变化的影响。研究结果表明，交通网络的扩展显著改善了企业的中心性，带来了更好的市场准入和更强的市场竞争。上游市场准入的改善降低了投入价格并提高了市场势力，而下游市场准入的改善则促进了生产率的提升。尽管竞争加剧带来了抵消作用，但市场准入的影响占据主导地位。此外，表现较差的企业，尤其是那些生产率较低、投入价格较高、市场势力较低的企业，从网络的改善中获益更多，从而导致了区域趋同。

主讲人学术简介：

李晟昱，2014年在宾夕法尼亚州立大学获得经济学博士学位。在2018年加入新南威尔士大学之前，曾担任英国杜伦大学经济学讲师。研究兴趣集中于产业组织和国际贸易的交叉领域，特别关注企业生产力和输入价格的异质性以及其对贸易参与、资源配置和行业动态的影响。研究议程涉及使用微观数据估计企业决策的静态或动态结构模型。文章发表于RAND Journal of Economics，Economic Journal，Journal of International Economics，International Economic Review，European Economic Review,International Journal of Industrial Organization。