数字经济发展、产业结构升级与劳动收入份额变化

Digital Economy Development,Industrial Structure Upgrading and Labor Income Share Change

数字经济作为推动生产力发展的新型经济形态,对劳动收入份额的变动有着重要影响。本文在理论分析的基础上,从数字基础设施、数字技术应用、数字创新能力三个维度利用熵权-TOPSIS法测算2013-2017年我国30个省区市数字经济发展指数;同时,采用固定效应、中介效应、面板门槛模型对理论分析的结论进行了实证检验。研究发现:(1)数字经济发展对劳动收入份额的提升具有显著的促进作用;(2)数字经济不仅可以直接提高劳动收入份额,还可以通过推动产业结构升级间接提高劳动收入份额;(3)数字经济对劳动收入份额存在显著的门槛效应。经过稳健性检验上述结论依然成立。

As a new economic form that drives productivity development,the digital economy has an important impact on the change of labour income share.Based on theoretical analysis,this paper measures the digital economy development index of 30 provinces,autonomous regions and municipalities in China from 2013-2017 using the entropy-TOPSIS method in three dimensions:digital infrastructure,digital technology application and digital innovation capacity;meanwhile,the findings of the theoretical analysis are empirically tested using fixed effects,mediating effects and panel threshold models.It was found that:(1)the development of digital economy has a significant contribution to the increase of labour income share;(2)digital economy can not only directly increase labour income share,but also indirectly increase labour income share by promoting industrial structure upgrading;(3)there is a significant threshold effect of digital economy on labour income share.The above conclusions still hold after robustness tests.