碳税情形下考虑低碳偏好的收益共享契约协调模型

研究考虑碳税和消费者具有低碳偏好情形的供应链碳减排的协调问题，得到实现供应链碳减排协调的必要条件。通过引入数量折扣策略，构建供应链碳减排的收益共享契约协调模型，解决纯粹的收益共享契约无法协调供应链碳减排的问题，并给出契约参数需要满足的条件。在消费者的低碳偏好以加法形式来影响市场需求时，通过模型优化，给出供应链的最优产品订购量和最优碳排放水平的确定方法。研究发现，在供应链协调时，供应商提供给制造商的批发价格是碳税的减函数，是碳排放水平的增函数；供应链系统的订购量与碳税成反比，而碳减排水平与碳税成正比，与碳减排系数成反比。

A Coordination Model with Revenue-sharing Contract Considering Carbon Tax and Consumers' Low-carbon Preference

Carbon emission reduction in supply chain is an effective means to reduce the greenhouse effect. Considering the carbon tax and consumers' low-carbon awareness, the paper studies how to coordinate the carbon emission reduction in supply chain which consists of one manufacture and one supplier. Firstly, it analyzes the centralized decision condition and obtains the requirements to coordinate carbon emission reduction in supply chain. Secondly, it builds the supply chain coordination model with revenue-sharing contract by introducing quantity discount policy, which solves the problem that the classical revenue-sharing contract cannot coordinate the low-carbon supply chain, and the conditions are also given that the contract parameters should meet. Finally, assuming the market demand being affected by consumer's low-carbon preference in addition form, methods are proposed to determine the optimal order quantity and the optimal carbon emission by model optimization. The study shows the wholesale price that the supplier provides the manufacturer will decline with the rise of carbon tax and increase with the rise of carbon emission. The order quantity of the supply chain system is inversely proportion to the carbon tax, while the level of carbon emission reduction is proportional to the carbon tax and inversely proportional to the carbon emission reduction factor. It has a certain guiding significance for the government to make suitable carbon tax policy and for the supply chain members to meet the low-carbon product demand.