摘要
本文基于Kmenta近似技术从标准化CES生产函数中推导出包含偏向性技术进步指数的TFP增长率函数,系统考察了偏向性技术进步下TFP增长率变化的驱动机制,刻画了偏向性技术进步与要素效率增长、资本深化水平及其增长率的协同效应对TFP增长率变化的作用机制。利用中国工业数据对理论机制的检验表明:技术进步偏向要素效率增长相对滞缓的资本,引发的"资本低效率陷阱"一定程度上削弱了中国工业的TFP增长潜力,而资本深化与技术进步融合推动了TFP增长率增长;相比较而言,资本偏向性技术进步解释了现阶段中国工业TFP增长率的大部分增长。本文为开发和引进有利于TFP增长率提升的适宜技术提供了有益启示。
Technical change is an important source of total factor productivity(TFP)growth.Either neutral or biased technical change(BTC)is significant for understanding TFP improvement.However,few studies have addressed the implications of BTC on the measurement of TFP(Antonelli&Quatraro,2010,2014;Zuleta,2012;Antonelli,2016;Feder,2017a,2017b).The literature paid much attention to the shift effect and nearly ignored the bias effect(Antonelli&Quatraro,2010),which has made it impossible to fully understand the role of technological progress in the change of TFP.This paper aims to investigate deeply the influence of BTC on TFP growth and its driving mechanism.It follows Acemoglu s(2002)normative definition of factor-biased technical change and its identification criteria.Using the Kmenta approximation technique,the TFP growth rate function including the BTC index is derived from a standardized CES production function.From the perspective of BTC,our paper visually reveals the mystery of the dynamic evolution of TFP growth.Theoretical analysis based on the combination of capital-labor factors shows that a change in TFP growth rate in a non-neutral technology situation depends on the congruence between BTC and factor efficiency growth,the level of capital deepening and the TFP growth rate.Specifically,first,the congruence between BTC and the level of capital deepening affects the direction and magnitude of the change in TFP growth.Second,the level of congruence between BTC and factor efficiency growth affects the direction and magnitude of TFP growth.Third,the direct impact of BTC on the TFP growth rate is implicit in the productivity effects of factor efficiency growth rates.Fourth,the direction and magnitude of the impact of the capital-deepening growth rate on the TFP growth rate depends on the level of congruence between the elasticity of factor substitution and factor efficiency growth.Using data taken from China's industrial sector from 1998 to 2016,the preceding mechanism is analyzed.The main conclusion is that the factor
作者
李小平
李小克
LI Xiaoping;LI Xiaoke(Economic School,Zhongnan University of Economics and Law)
出处
《经济研究》
CSSCI
北大核心
2018年第10期82-96,共15页
Economic Research Journal
基金
国家社科基金项目"供给侧结构性改革背景下制造业出口质量提升对经济波动的影响"(批准号:17BJL013)的阶段性成果
关键词
TFP增长率
偏向性技术进步
技术一致性
替代弹性
资本深化
Total Factor Productivity Growth
Biased Technical Change
Technological Congruence
Substitution Elasticity
Capital Deepening
