题目：Barriers in the Sky

 摘要：This paper investigates the economic impacts of transport network quality. While existing work largely focuses on whether two locations are connected, we examine how connection efficiency shapes intercity economic activity. China's commercial airlines provide a setting in which flights are confined to 20% of airspace, yielding average route curvature of 17%, compared with 5% in the US and Europe. Using route curvature as a direct measure of inefficiency, we find that greater curvature raises airfares while reducing flight frequency, competition, and aeroconnectivity. These aviation market distortions cascade into broader economic costs, reducing intercity trade, corporate investment, and population mobility.

 时间：10月19日下午14：00

 地点：经济学院6-210会议室

 嘉宾简介：

 陈子扬，南京大学经济学系特任副研究员，香港科技大学哲学博士，曾为巴黎政治学院和巴黎经济学院访问学者，主要研究领域为城市经济与房地产金融学，研究成果发表于Journal of Urban Economics，Journal of Development Economics，《经济研究》等国内外期刊，主持国家自然科学基金青年项目（C类），担任JEEM，JDE，RSUE等期刊审稿人。