生态系统服务的经济价值：来自蜜蜂的证据
发布时间：2025-10-28
10月
31
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时间和日期
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2025-10-31 (星期五) 10:30 上午
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12:00 下午
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地点
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综合教学楼D904会议室
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| 标题 | 生态系统服务的经济价值：来自蜜蜂的证据 |
| 日期和时间 |
2025年10月31日（周五） 10:30-12:00 |
| 地点 | 综合教学楼D904会议室 |
| 主讲人 |
梁远宁教授 北京大学 |
| 摘要 | Ecosystem services are essential to agricultural productivity, yet their economic value remains difficult to measure. This paper quantifies the value of pollination services provided by managed honey bees in U.S. agriculture. Using state-by-quarter bee colony census from 2015–2024 and county-level measures of crop reliance on pollination, we estimate how changes in bee abundance affect farm income. To address endogeneity, we exploit variation from interstate bee migration, using predicted inflows of colonies affected by ecological shocks—such as forage losses or adverse weather—in source states. The results show that a one–standard-deviation increase in bee colonies increases county farm income by 1.1 standard deviations, implying an aggregate annual value of roughly $15 billion. |
| 主讲人简介 | 梁远宁，北京大学经济学院经济学助理教授，主要研究领域包括环境经济学、交通运输经济学、城市经济学以及生物多样性。她于美国康奈尔大学戴森应用经济与管理学院获得经济学博士学位，研究成果发表于Journal of Public Economics、Proceedings of the National Academy of Sciences（PNAS）、Journal of Urban Economics及China Economic Journal等国际权威学术期刊。梁远宁教授的研究工作不仅在学术界引起广泛关注，还获得了国家自然科学基金资助。 |
