Research On The Dual Margain Of Chinese Commodity Export

Since the 1990s,with the domestic economic development and improve the level of economic globalization, China commodity export scale expands unceasingly, but its share of merchandise exports continue to reduce the proportion, Trade deficit is widening. On the other hand,1997 Southeast Asian economic crisis and the 2008 global financial crisis has further exposed the Chinese response to external economic shocks in commodity vulnerability. The new-new trade theory represented by Melitz success derive a country’s export growth into intensive marginal and extensive marginal. We study the growth in exports of commodities China proposed a new way of perspective.First of all, according to trade data from 1996 to 2012, from the market position, product structure and market structure three angles analyzes the Chinese commodity exports. The results show that although the scale of Chinese exports of commodities is increasing, but in commodity market position was declining; higher product and market concentration, but concentration levels decline.Second, The article builds the relationship framework of export concentration and dual margin through the decomposition of Theil export concentration index, studies the dual margain, concentration of Chinese commodity export from 1996 to 2012. The result indicates that whether it is in the overall level or at the level of product segments, Chinese commodity mainly achieve it’s export volume along the path of intensive margain, extensive margain influence not showing that evident,but continually enhance all the time.On the other hand..Chinese commodity export concentration index is inferior to representative developed countries and emerging countries, mainly for the export volume concentration and less contribution of export variety concentration.Then, on the basis of the traditional modified gravity model, the paper constructs a binary marginal determinants empirical model, measure the size of the economy, market distance, economic freedom, labor productivity levels, land area, container terminal throughput and the amount of Internet users Dual marginal impact on factors such as the structure.Finally, based on these studies, aiming to further promote Chinese agricultural exports sustained and healthy development of mineral policy recommendations, said: emphasis on the role of science and technology to improve the level of product and market diversification, lower export fixed costs, promote economic and trade liberalization level improve domestic infrastructure, reduce the impact of changes in the external trade environment for export growth.