| In this paper we based on the trade theory and research literature to tease out the five mechanism of the effect of international trade on productivity: the reallocation effect, scale economy effect, technology spillover effect, "learning by doing" effect and the effective resource allocation effect. Then we uses the panel data of Chinese 29 industries of manufacturing from 2005 to 2011, through the Malmquist index method which based on Data Envelopment Analysis(DEA), we acquire the total factor productivity, technical efficiency, technical level, pure technical efficiency and scale efficiency of all industries in 2006-2011, and compared the changes of the above indexes. Then we calculate influence of import and export on the five indexes. The study found that the TFP of China's manufacturing industry increases in the overall, but the TFP of each industry change is different, there are 5 industries' total factor productivity in decline. But the technical level of all industries are improving, technical efficiency is different from industry to industry, some industries showed a downward trend in, while other industries are upward. The regression analysis of import and export with five productivity indexes shows that, the import and export of only four industry has a significant impact on TFP. While considering the decomposition of total factor productivity, technical level fitting the best with import and export, and half of the manufacturing industries' technical level have positive correlation with import and export. Finally, we explained the regression results combined with the mechanism, and made advice for reference. |
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