Decomposition of Export Data by Production Regions : A New Measurement of Variety

以日本都道府县和地区为基础的国际贸易数据库是由海关部门从原始数据库成功构建的。通过使用这个构建的数据库，我们得出了以下四篇研究论文。第一，在区域出口增长中，粗放型边际占60%左右。第二，除了国家和行业的差异，它表明，在一个国家内的生产区域也影响汇率传递的差异。此外，区域在国家出口中所占的份额显著影响汇率传递的程度。第三，通过构建理论模型，并对一国内部地区在国际贸易中的作用进行实证研究，我们发现，外国市场的扩大提高了具有地理优势的地区的出口份额。第四，就韩国和台湾而言，日本都道府县的国际贸易中，产业内贸易和边际利润之间存在着很强的相关性。

The database for international trade based on prefectures and regions within Japan is successfully constructed from the original database by custom offices. By using this constructed database, we came up with the following four research papers. First, extensive margin plays an important role of about 60% in accounting the growth of regional exports. Second, in addition to differences due to countries and industries, it is shown that production region within a country also matters for differences in exchange rate pass-through. Moreover, regional share in national exports significantly affects the degree of exchange rate pass-through. Third, by constructing a theoretical model and empirically investigating of international trade with the explicit role of regions within a country, we show that an expansion of foreign market raises the export share of the region with geographical advantage. Forth, with respect to Korea and Taiwan, intra-industry trade and extensive margin are strongly correlated in international trade of Japanese prefectures.