知识产权保护:扩张进口种类抑或增加进口数量?——基于中国产品层面进口数据的实证分析  

Protect Intellectual Property Protection to Expand Import Species or to Improve Import quantity?: A Product-Level Empirical Analysis of China's Import

作　　者：马凌远[1] 

机构地区：[1]郑州航空工业管理学院经贸学院

出　　处：《世界经济研究》2015年第10期110-119,129,共10页World Economy Studies

基　　金：国家社会科学基金一般项目(项目编号:13BJY116);河南省教育厅人文社会科学规划项目(项目编号:2013-GH-256)

摘　　要：文章基于HS-6分位产品层面的国际贸易数据，遵循Hummels和Klenow（2005）的方法计算了1995～2011年中国进口增长的二元边际，并运用面板数据引力模型实证检验了知识产权保护对中国进口及其二元边际的影响。研究结果表明：目前中国的进口主要依靠集约边际的增长，但知识产权对中国进口积极作用则是沿着扩展边际而实现的；加强知识产权保护的市场扩张和市场势力效应分别作用于中国进口产品的种类和数量，而前者占据主导；知识产权保护增加一个单位，扩展边际增加约36％，集约边际约减少5％。Based on 6-digit trade data,we calculated the dual margins of China's import growth during the year from 1995 to 2011,and empirically examined how intellectual property protection( IPRs) affected China' import and its dual margins. The results show that IPRs has positive effect on China's import. Through decomposing this effect,the paper found that market expansion and market power effects of stronger IPRs are usually exist,with the former affecting the variety of products traded and the latter affecting the volume of products traded. In all cases,the impact on the extensive margin is found to dominate on the intensive margin. In particular,one unit increase in the level of IPRs protection will increase the extensive margin of around 36% and decrease the intensive margin of around 5%. The extensive margin accounts for around 110% of the increase in import following an increase in IPRs.

关 键 词：知识产权 进口 二元边际 引力模型 

分 类 号：F204[经济管理—国民经济] F752.6