论文部分内容阅读
依据Feenstra等人的检验方法,本文测算了中国省份层面的初级品和制成品贸易多样性,结果发现,制成品进口多样性的地区区域出现扩散形态,而出口多样性走向区域趋同。在计算样本期我国省份TFP指数基础上,研究进一步考察了贸易多样性与生产率增长的双向关联,结果发现,除了科研投入,贸易多样性成为我国生产率提高的重要因素;就贸易多样性扩张来看,显性或隐性壁垒以及汇率波动干扰等构成壁垒因素,而TFP指数、科研投入、产业结构差异化、中小企业规模都成为其贡献因素。
According to the test method of Feenstra et al., This paper estimates the diversification of primary commodities and finished products at the provincial level in China. The result shows that the regions with diversified import of manufactured products appear to be diffused, while the export diversity moves toward the regional convergence. On the basis of calculating TFP index of our province during the sample period, the study further examined the two-way relationship between trade diversity and productivity growth. It was found that in addition to investment in science and research, trade diversity has become an important factor in China’s productivity growth. In view of the expansion of trade diversity , Dominance or recessive barriers and exchange rate fluctuations and other factors that constitute a barrier, while the TFP index, research investment, industrial structure differentiation, the scale of SMEs have become its contribution factor.