2025年1月9日（周四）11:30-14:00
地点：
浙江大学紫金港校区创意楼A座729会议室
主讲人：
李硕 博士
题目：
Environmental Regulation and Firms’ Extensive Margin Decisions
摘要：
The paper explores the impacts of environmental regulation on Chinese firms’ extensive margin decisions and consequent changes in the market structure and competitiveness of regulated industries. While environmental regulation deters firm entry and increases firm exit, it asymmetrically targets entrants more than incumbents. Through the market selection mechanism, while reducing the number of large entrants, environmental regulation drives small and least productive entrants and incumbents out of the market, increasing the average productivity of firms in regulated industries. Furthermore, our findings reveal no spatial spillover effects of environmental regulation in the non-regulated regions, which fortifies our identification strategies and alleviates concerns regarding pollution relocation.
题目：
Redesign China’s Air Pollution Abatement Scheme
摘要：
Addressing air pollution is a critical concern. Traditionally, air pollution regulations primarily target areas with high pollution levels. However, regions with the highest pollution levels may not always contribute the most to nationwide pollution due to the long-distance transport of air pollutants. This paper uses high-frequency backward trajectory data to examine the spillover effects of PM2.5 pollution in China from 2015 to 2023. The city-pair regression reveals a statistically significant positive correlation between the pollution levels in source and destination cities. Interestingly, the geographic distribution of air pollution spillover impact significantly diverges from the pattern of PM2.5 concentration. This divergence indicates a discrepancy between local air pollution levels and national air pollution contributions. Moreover, the study reveals that China’s past city-level PM2.5 reduction targets were primarily determined by PM2.5 concentration rather than the contribution of local air pollution to national air pollution, suggesting potential efficiency loss. Lastly, the paper proposes an alternative pollution reduction target allocation scheme that considers spillover effects. The results indicate that China has disproportionately focused on the most polluted cities while under-reacting to many less-polluted cities with significant spillover impacts.
主讲人简介：
李硕，香港大学经济及工商管理学院博士后，2022年博士毕业于北京大学国家发展研究院，曾任耶鲁大学访问学者、世界银行短期顾问。研究领域包括环境经济学、健康经济学、发展经济学。在《世界经济》、《中国人口·资源与环境》等期刊发表多篇论文，曾获中国环境与资源经济学家协会最佳博士论文、中国留美经济学会最佳学生论文奖、中国健康经济发展论坛优秀论文奖（两次）、第八届中国劳动经济学者论坛年会优秀论文奖等奖项。
主持人：
金鑫，浙江大学中国农村发展研究院、公共管理学院百人计划研究员
