Internal Geography, International Trade, and Regional Specialization
在比较优势驱动的国际贸易模型中引入内部地理，分析外部经济一体化对区域的影响，并用中国地级市数据验证了区域专业化模式。
We introduce an internal geography to the canonical model of international trade driven by comparative advantages to study the regional effects of external economic integration. The model features a dual-economy structure, in which locations near international gates specialize in export-oriented sectors while more distant locations do not trade with the rest of the world. The theory rationalizes patterns of specialization, employment, and relative incomes observed in developing countries that opened up to trade. We find regional specialization patterns consistent with the model in industry-level data from Chinese prefectures.