总量-交易机制下制造商占优供应链碳减排策略

Carbon Emissions Reduction Strategy for Manufacturer-leading Supply Chain under Cap-and-trade Scheme

在碳排放总量-超额交易规制下,文章研究了供应链系统碳减排合作策略问题。考虑碳减排投资成本,低碳产品高价格支付意愿及产品采购量价格效应等因素,构建了供应链双方的利润函数。解析求解得到系统变量的纳什均衡及系统整体利润。仿真分析直观反映了供应链系统关键参数对于系统变量及参数的影响。研究发现,集中决策策略优于部分合作策略;部分合作策略虽然不能明显改善供应链收益,但却能显著提升系统碳效率;碳排放总量设定必须兼顾供应链碳效率和收益。

Cooperative strategies of carbon emissions reduction for supply chain systems under the Cap-and-trade scheme are studies. Profit functions for both partners of the supply chain is established considering carbon emission reduction cost, higher payoff willingness for low carbon products and price effect of purchase quantities. Analytical solution is applied to acquire supply chain＇s Nash equilibria together with integrated supply chain＇s profit. Simulation is carried on to visually reflect impacts of some key parameters to major variables and the whole profit for the supply chain system. Main findings of the study include that centralized decision strategy is superior to partial cooperative strategy; although the partial cooperative strategy can not obviously improve the supply chain＇s profit, it can enhance the system＇s carbon efficiency remarkably; Carbon emission caps shall take carbon efficiency together with profit of the supply chain into consideration simultaneously.