循环经济系统中产品再使用的经济学分析

以具有相同功能的新产品作为比较基准,从经济学角度通过构造社会效用函数建立了再使用产品的市场选择模型,导出了均衡数量的求解条件。在均衡解的基础上,分析了再使用产品降价、新产品供给限制和凭票购买等经济政策对均衡解的影响。研究发现只有降价政策能促进再使用产品的购买,提高社会效用;新产品供给限制和凭票购买政策虽然能够促进再使用产品的购买,但社会效用下降。分析中发现,再使用产品降价政策产生的Slutsky效应是由使用者选择的内部Slutsky效应和再使用产品与新产品的市场替代的外部Slutsky效应组成,这与经典Slutsky方程不同。

Economic Analysis of Products Reuse in Circular Economy System

From the view of economics,the market choice model of reused products is built by constructing social utility function at the standard of the new product with the same functions and its solving condition of equilibrium quantity is derived.In the basis of equilibrium solution the effects of price reducing of reused products,supply quota of new products and supply against coupon on equilibrium quantity is analyzed.The study discovers that only the price reducing policy of reused products can promote the purchase of reused products and increase the social utility;although supply quota of new products and supply against coupon increase the equilibrium quantity of reused products,but the social utility decreases.The study also discovers that the Slutsky effect caused by the price reducing policy of reused products is consist of internal Slutsky effect of user choice and external Slutsky effect of the substitution effect of reused products and new products,which is not the same as classic Slutsky equation.