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基于2002～2010年HS-6位数中国进口数据,文章描述了中国进口种类数量的演变特征,并构造考虑进口种类增长的精确进口价格指数,测算忽略种类增长的传统进口价格指数引致的价格偏误,进而估算入世以来中国进口种类增长的贸易利得。结果发现,传统进口价格指数累计向上偏误1.896%,进口种类增长的贸易利得为2010年GDP的0.419%。在此基础上,进行国别分析发现,对中国贸易利得贡献最大的是欧盟、美日韩等经济体,而产业分析揭示了化学品及制品的制造、能源矿产资源的开采和产品制造等产业的贡献度较大。
Based on the HS-6 figures of China’s import data from 2002 to 2010, the article describes the evolutionary characteristics of the number of imported species in China, and constructs a precise import price index that considers the growth of imported species, and estimates the price bias due to the traditional import price index that ignores the growth of categories. Mistakes, and then estimate the trade gains of China’s imported species since the accession to the WTO. As a result, it was found that the cumulative increase in the traditional import price index was 1.896%, and that the increase in the import category was 0.419% of the 2010 GDP. On this basis, a country analysis found that the greatest contribution to China’s trade profits is in the European Union, the United States, Japan and South Korea, while industrial analysis reveals the manufacture of chemicals and products, mining of energy and mineral resources, and product manufacturing. The contribution is greater.