Research On Carbon Emission Reduction Technology Investment Strategies For Supply Chain Under Carbon Trading

On November 25,2017,the State Council officially approved the total carbon quota setting and carbon quota allocation methods,which cleared the carbon policy to adhere to the principle based on market mechanisms at the National Low Carbon Technology Conference.The carbon market will take "three system" as the criterion,namely the emissions MRV system,the quota allocation and management system.The carbon emission quota allocation and management system among the market supervision system have entered a substantive and operational stage.Aiming at the investment of low-carbon supply chain emission reduction technology in carbon trading market,this paper studies the cooperative model of upstream and downstream supply chain,which is composed of one manufacturer and one retailer.Considering the influence of consumers' low carbon sensitivity on product sales,this paper makes a differential game analysis of four different investment cooperation decisions in supply chain technology emission reduction from the dynamic point of view.First of all,aiming at carbon emission reduction technology in the supply chain without subsidies in the carbon trading market,this paper uses the control theory to construct decentralized,coordinated,centralized and social welfare maximization decision-making models respectively from the view of non-cooperation,cost sharing,benefit-sharing and social welfare maximization.The equilibrium values of wholesale price,product pricing,emission reduction efforts,carbon emissions,social welfare and enterprise profits under different making decisions are compared and analyzed.The variable trajectory diagram and parameter sensitivity analysis are carried out,which can provide references for the decision of investment cooperation in emission reduction technology among low-carbon supply chain enterprises;Secondly,in view of the cost subsidy to supply chain enterprises under carbon emissions trading,this paper constructs four decision models by using differential game,comparing the equilibrium value under different models,and analyzing the sensitivity of relevant parameters.It solves the problem of cooperative decision-making for enterprises which get special cost subsidies by participating in emissions trading market,for example nonferrous metal industry of high energy consumption;Finally,according to the unit product subsidies of energy and green building industry participating inreduction technology investment decision-making,this paper uses the game theory to analyze the different trajectory decision model,and to observe the changes of the parameters of product subsidies through simulation and analysis.It provides reasonable suggestions for the enterprises of the supply chain reduction technology investment with products subsidies.The results show that in the carbon emissions trading market,the upstream and downstream enterprises in the supply chain should adopt centralized decision to reduce their technology investment,no matter whether the government subsidizes the enterprise or not.And the centralized decision can effectively improve the profit and environmental performance of the enterprises and achieve a win-win situation.It is found that government subsidies can promote the technology investment in supply chain emission reduction and the incentive effect of product subsidies is better than that of cost subsidies.According to the parameter sensitivity analysis,it is found that the change trend of the parameter is the same and the influence degree is different under different subsidy conditions.The carbon reduction models of non-subsidy,cost subsidy and product subsidy constructed in this paper are in line with the realistic situation.Considering the sensitivity of consumers to low-carbon products,this paper analyzes the economic benefits and environmental performance of supply chain emission reduction cooperation under different decision-making from the dynamic point of view.It can effectively guide supply chain enterprises to make investment decisions on emission reduction technology.And it provides a theoretical reference for the government to set the ratio of financial subsidy in low-carbon supply chain scientifically and contribute to the construction of green low-carbon city.