收入分配不平等、有效需求与创新研发投入——基于中国省际面板数据的实证分析

Income Inequality,Effective Demand and R&D Expenditure——Empirical Study Based on China's Panel Data

使用1999-2010年我国30个省、市、自治区的面板数据，实证检验了有效需求规模和收入分配不平等对国内创新投入的影响。研究结果显示，收入分配不平等的加剧会显著抑制消费者对企业创新产品的需求，进而减少国内的创新行为和研发投入；较高的市场需求规模会促进企业创新投入的增加。这一结果表明，通过收入再分配缩小收入分配差距，保障收入分配合理、公平，不仅可以扩大内需，而且能够促进创新行为和研发投入的增加，促进国内技术进步，从而有利于我国向需求与创新驱动的内生经济增长模式转型。

This paper analyzes the influence of income inequity and market scale to R＆D Expenditure by using inter-provincial China＇s panel data from 1999-2010. The empirical results have shown the aggravation of income inequity had a strong negative effect on demand of innovation products and would reduce firms＇ R＆D Expenditure and R＆D behavior; however, high demand scale would improve R＆D Expenditure. The analysis has indicated lessening income inequity and ensuring a rational and equity income gap would not only expand domestic demand, but also accelerate firms＇ R＆D Expenditure and R＆D behavior. Improving income inequity would be help for domestic technological progress and transformation to innovation-driven endogenous economic growth type.