Deconstructing gravity: trade costs and extensive and intensive margins

被引:82
|
作者
Lawless, Martina
机构
[1] Central Bank, Financial Services Authority of Ireland
关键词
FIRMS; EXPORT;
D O I
10.1111/j.1540-5982.2010.01609.x
中图分类号
F [经济];
学科分类号
02 ;
摘要
P>This paper uses data on US exports to decompose exports into the number of exporting firms (the extensive margin) and average export sales (the intensive margin). We show how a range of proxies for trade costs has different impacts on the two margins. Distance has a negative effect on both margins, but the magnitude is considerably larger for the extensive margin. Most of the variables capturing language, internal geography, infrastructure and import cost barriers work through the extensive margin. We show that these results are consistent with a Melitz-style model of trade with heterogeneous firm productivity and fixed costs.Ce memoire utilise des donnees sur les exportations des Etats-Unis et en decompose l'evolution entre ce qui est attribuable au nombre des firmes exportatrices (la marge extensive) et les ventes moyennes a l'exportation (la marge intensive). On montre comment une variete d'indicateurs des couts du commerce impacte differemment les deux marges. La distance a un effet negatif sur les deux marges, mais la taille de l'impact est considerablement plus importante sur la marge extensive. La plupart des variables comme la langue, la geographie interne, les infrastructures, et les barrieres de couts a l'importation operent via la marge extensive. Ces resultats sont consistants avec un modele de commerce de type Melitz avec heterogeneite des entreprises pour ce qui est de la productivite et des couts fixes.
引用
收藏
页码:1149 / 1172
页数:24
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