垂直专业化、中间产品进口与制造业国内技术含量

Vertical Specialization,Import of Semi-finished Products and Domestic Technological Contents of Manufacturing Industry

本文计算了中国制造业16个细分行业的垂直专业化指数和国内技术含量。在考察的7个年份当中,16个细分行业的垂直专业化指数逐渐增大,说明中国制造业参与垂直专业化分工的程度逐渐加深,16个细分行业的国内技术含量也随时间的推移不断提高。此外,本文还实证分析了垂直专业化、中间产品进口以及国内技术含量的关系。从实证结果来看,中间产品的进口促进了制造业国内技术含量的提升,但参与垂直专业化分工没有对制造业国内技术含量的提升起到明显的促进作用,垂直专业化指数越高的行业,其国内技术含量却越低。

This paper calculates the vertical specialization share(VSS)and the domestic technological contents(DTC)of 16 manufacturing sectors. Among the 7 years surveyed,the vertical specialization share of 16 Chinese manufacturing sectors is enlarged gradually,which means that Chinese manufacturing participates in vertical division of labor more intensively. With the passage of time,the domestic technological contents of 16 sectors rise continually. In addition,this paper empirically analyzes the relationship among vertical specialization,the import of semi-finished products and domestic technological contents. Seen from the positive results,the import of semi-finished products promotes the rise of the domestic technological contents of manufacturing industry. But the participation in vertical division of labor does not obviously promote the rise of the domestic technological contents. The higher the vertical specialization share,the lower the domestic technological contents.