Research on Cost Sharing and Coordination of Low Carbon Supply Chain in the Context of Carbon Neutrality Strategy

For carbon emissions under the limit of supply chain cost sharing problem, based on the Shared contract perspective starkerberg game model includes the manufacturers and retailers, analyzes the cost sharing ratio, carbon trading price and unit carbon tax emissions on the supply chain, and the optimal strategy combination and carbon reduction cost allocation ratio is studied. The results show that the one-way cost sharing model is beneficial to the reduction of low carbon supply chain, while the two-way cost sharing model has a positive effect on the reduction of supply chain within the small allocation ratio. In addition, the sharing proportion of manufacturers is within a certain range, and the two-way emission reduction mode is the optimal choice for the supply chain. Meanwhile, the sharing proportion will affect the choice between decentralized and centralized decisions. In addition, the numerical analysis shows that the carbon emission reduction levels increase with the increase of carbon trading prices. The results have good reference significance for the carbon emission reduction decision and carbon reduction cost sharing contract among members of the low-carbon supply chain.