Trade Costs and the Gains from Trade in Crop Agriculture
基于李嘉图比较优势理论，构建世界作物市场模拟模型，测算23个国家的全球化程度、贸易收益及贸易成本弹性，发现贸易收益分布不均，与开放度、生产率和发展水平相关。
We develop a simulation model of world crop markets that is based upon Ricardian comparative advantage. We apply the model to twenty‐three countries and provide measures of the degree of globalization in this sector, the gains from trade, and the elasticity of trade volumes to trade costs. The distribution of the gains from trade across countries is uneven due to important differences in openness to imports, productivity, and other factors, some of which appear to be related to a country's level of development. Distance limits the extent by which changes in one country are transmitted to others.