Comparative advantage and agricultural trade
基于2018年农业经济学家国际会议上的演讲，概述了比较优势如何影响农业贸易模式以及贸易带来的福利变化，包括国内农业贸易的静态收益和贸易如何缓解干旱与气候变化导致的消费损失与粮食不安全。
Abstract This article is based on a transcript of the Leonard K. Elmhirst Memorial Address, delivered at the 30th International Conference of Agricultural Economists in Vancouver, Canada, on July 29, 2018. The presentation provided an overview of work that I have done recently on comparative advantage and its role in agricultural trade patterns and trade‐driven changes in welfare. Two topics are addressed: (a) the static gains from intranational agricultural trade due to comparative advantage; and (b) how trade might mitigate consumption losses and food insecurity from changes in agricultural productivity caused by drought and climate change.