收入差距对宏观指标的影响研究:理论、方法与数据

Study on the Impacts of Income Gap on Macroeconomic Indicators:Theory,Methods and Data

收入差距是影响宏观指标的一个重要因素,但其影响机制及计量分析方法有待进一步深化拓展。通过构建一个包含基尼系数的宏观总量函数,严格论证了收入差距影响宏观指标的理论机制。基于宏观总量函数,推导出收入差距的宏观总量损失公式和收入差距变化对宏观总量指标变化影响的差分公式。利用1996~2010年中国的宏观数据计算表明:收入差距导致居民总消费平均损失率为2.68%,导致国民福利平均损失率为8.66%,收入差距扩大对居民消费率下降的贡献率为3.18%,对劳动收入份额下降的贡献率为14.98%,对国民福利增长的贡献率为-8.08%。

Income gap is an important factor which influences macroeconomic indicators, but its impact mechanism and econometric analysis methods need to be further deepened and expand- ed. By constructing a macro aggregate function containing Gini coefficient, this paper demon- strates the theoretical mechanism of the impact of income gap on macroeconomic indicators. Based on the macro aggregate function, the macro aggregate loss formula of income gap and the difference formula of the impact of income gap change on macro aggregate change are deducted. A calcula- tion is made by using China＇ s macro data and the result shows that the average loss rate of resi- dents＇ total consumption caused by income gap is 2.68%, and the average loss rate of national welfare is 8.66%. The contribution rate of widening income gap on the decrease of residents＇ consumption rate is 3. 18%, the contribution rate on the decrease of the share of labor is 14. 98%, and the rate on the national welfare growth is - 8.08%.