数字经济发展对行业利润率的影响——基于2018年投入产出表的分析

The Impact of the Development of the Digital Economy on the Profit Rate of the Industry:Analysis based on the input-output table in 2018

数字经济的发展有助于提高产业活力。不同行业中数字经济发展对行业利润率有何影响值得研究。为此,采用中国2018年153个部门的投入产出表数据,用分位数回归法检验数字经济发展对行业利润率的影响。结果表明:当行业利润率处在较低或较高水平时,狭义数字投入水平对行业利润率的影响不显著;当行利润率水平达到中高规模时,广义数字投入水平对行业利润率有显著的正向影响;而当行业利润率水平过高时,其对行业利润的影响并不显著。

The development of the digital economy helps to improve the vitality of the industry.How does the level of digital technology investment in different industries affect the profitability of the industry,which is an question needed to study.Thus,using the input-output table data of 153 departments in China in 2018,the quantile regression method is used to test the impact of the level of digital technology input on the profitability of the industry.The results show that:When the industry profit rate is at a low or high level,the narrow digital input level has no significant impact on the industry profit rate.When the profit rate of the industry reaches a medium-to-high scale,the generalized digital input level has a significant positive impact on the profit rate of the industry,and when the profit rate of the industry is too high,its impact on the industry profit is not significant.