%0 Journal Article %T 出口二元边际、行业异质性与劳动生产率<br>Dual margins of export,heterogeneity of industries and labor productivity %A 蒲艳萍 %A 顾冉 %A 成肖 %J 重庆大学学报社会科学版 %D 2018 %R 10.11835/j.issn.1008-5831.2018.05.005 %X 基于行业异质性视角,文章主要考察出口二元边际对劳动生产率的影响。利用UN Comtrade数据库,采用HK指数法测度中国出口深度边际和出口广度边际,发现中国出口产品种类基本覆盖了世界全部种类的90%。进一步地,借助聚类分析方法综合多种因素区分行业劳动技能异质性,出口二元边际与劳动生产率关系的实证结果显示:总体上出口深度边际显著推动劳动生产率提高,出口广度边际对劳动生产率产生抑制作用。更为重要的是,出口深度边际对劳动生产率的促进作用仅存在于高技能行业,受限于行业产品技术含量和劳动技能水平等,低技能和中等技能行业出口深度边际出现贫困化增长现象。出口种类扩张的生产率损失超过出口溢出效应的生产率收益,出口广度边际对高中低技能行业劳动生产率具有不同程度的负向影响。<br>From the perspective of the heterogeneity of industries,this paper examines the effect of Dual Margins of Exporting on Labor Productivity. With the aid of UN Comtrade database,this paper calculates the Intensive Margin of Exporting and Extensive Margin of Exporting using HK index method. Further,this paper applies "cluster analysis" to distinguish the heterogeneity of industries considering a variety of factors. The empirical studies show that:In general,Chinese Intensive Margin of Export significantly promotes labor productivity,Extensive Margin of Export and labor productivity have a negative relationship. More importantly,the promoting effect between Intensive Margin of Export and labor productivity just exists in high-skill industries. Limited by technological content of products and labor skill levels of different industries,Intensive Margin of Export appears "immiserizing growth" in low-skill and middle-skill industries. There are various degrees of negative effects between Extensive Margin of Export and high,middle,low-skill industries. %K 出口二元边际 %K 劳动生产率 %K 劳动异质性 %K 动态面板系统GMM法< %K br> %K dual margins of export %K labor productivity %K heterogeneity of labor skills %K dynamic system GMM estimation %U http://qks.cqu.edu.cn/cqdxskcn/ch/reader/view_abstract.aspx?file_no=20180505&flag=1