时变弹性生产函数生产率分解公式及其政策含义

Time-varying Elasticity Production Function:Productivity Decomposition Formula and Policy Implications

本文基于时变弹性生产函数,推导出经济增长来源于资本、劳动力、中性技术进步和偏向性技术进步贡献度之和;"索洛余值"在数值上等于中性技术进步贡献度与偏向性技术进步贡献度之和,也等于资本生产增长率与劳动生产增长率的加权和,其权数分别为资本和劳动时变产出弹性。研究认为,提高劳动收入份额,有利于促进经济向集约型发展方式转变。

Based on time- varying elasticity production function, this article derives the contribution of capital, labor, neutral technological progress and biased technical progress from economic growth. The total factor productivity contribution, or ＂Solow residual＂, is numerically equal to the summation of the contribution of neutral technology progress and biased technological progress, and also equal to the weighted summation of capital productivity growth rate and labor productivity growth rate, and the weights are time - varying capital and labor output elasticity.