Abstract: 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.

Key words: supply chain coordination, carbon tax, low-carbon preference, carbon emissions, revenue-sharing contract