国际垄断对中国大豆进口影响的实证分析  

Empirical Analysis on Influence of International Monopoly on China's Soybean Import

作　　者：余建斌[1] 乔娟[2] 

机构地区：[1]华南农业大学广东农村政策研究中心,广州510642 [2]中国农业大学经济管理学院,北京100094

出　　处：《技术经济》2008年第6期69-73,共5页Journal of Technology Economics

基　　金：国家自然科学基金项目(70473088)

摘　　要：近年来,中国大豆进口量急剧增长,且进口来源集中度越来越高,市场结构的变化对中国大豆进口的影响已经成为大家关注的焦点。本文通过修正测定市场垄断力的常用指标——勒纳指数以及构建计量模型,实证分析了国际垄断对中国大豆进口的影响。研究结果表明:美国对中国大豆进口始终存在卖方垄断,但随着大豆进口交易费用的下降,其市场垄断力逐渐减弱;巴西仅在中国大豆进口交易费用较高时存在卖方垄断;阿根廷对中国大豆进口不存在卖方垄断。在此分析的基础上,本文提出中国在大豆进口中应对国际垄断的政策建议。In recent years,China soybean import has dramatically increased and the concentration of import sources becomes higher and higher. How the market structure change influences China＇s soybean import has been an area of focus. Through adjusting Lerner index and establishing the econometric model,this paper empirically studies the influence of international monopoly on China＇ s soybean import. The results indicate that：the USA has market selling power under any case while the power would decrease as the import transaction cost declines;Brazil only has market selling power when import transaction cost is very high; Argentina has no market selling power in China＇s soybean import. Based on this analysis, some policies are suggested to restrict the international market monopoly in China＇s soybean import.

关 键 词：国际垄断 大豆进口 勒纳指数 

分 类 号：F752.61[经济管理—国际贸易] F224[经济管理—产业经济]