关键词: 结构参数, 出口固定投入成本, 扩展边际

Abstract: Elasticity of substitution and heterogeneity parameter are the key factors on how export fixed input cost impact the extensive margin. This paper uses the heterogeneity firms trade theory framework to deduce the structural gravity model, and uses panel data during 2004-2007 to empirically analyze the exports of 29 manufacturing industries in China. Based on the empirical analysis above, this paper estimates the structural parameters (substitution elasticity and heterogeneity parameters) for 10 manufacturing industries and examines the impact of export fixed input cost on total exports and trade extensive margin. It is shown that the coefficient estimates of 22 industries in 29 manufacturing industries are consistent with theoretical expectations; the estimates of structural parameters for 10 manufacturing industries are also consistent with theoretical expectations; the impacts of export fixed input cost on total exports and extensive margin vary from industry to industry . Policy implication means that trade facilitation policies and industrial policies should be combined to ensure the stable and healthy development of trade.

Key words: Structural Parameter, Export Fixed Input Cost, Extensive Margin