资本深化、结构变迁及劳动收入份额变动

Research on Capital-deepening,Structural Change and Labor Income Share

本文通过构建一个具有要素密集度差异的两部门模型,分析了部门间TFP增长率差异、物质资本积累、恩格尔效应、以及部门进入壁垒变化对产业结构和劳动收入份额的影响。在资本深化且劳动密集型产品为优先需求的前提下,恩格尔效应将会导致劳动收入份额下降,并且这种效应渐近地趋于零;其次,部门TFP增长率差异、物质资本积累、产业壁垒变化对劳动收入份额的影响则取决于替代弹性的具体大小。

Through a two-sector model with factor-intensity difference,this paper analyzes the effects on structural change and labor income share of TFP growth rate difference between two sectors,material capital accumulation,Engel effect and sector entry barrier variation.With the condition of capital-deepening and labor-intensive product as the precedence demand,Engel effect decreases labor income share independent of specific value of elasticity of substitution,and this effect asymptotically diminishes.However,the way TFP growth rate difference between sectors,capital accumulation,and sector entry barrier variation affect labor income share depends on the condition the specific value of elasticity of substitution is more or less than one.