Research On Emission Reduction Strategy Of Closed-Loop Supply Chain Based On Carbon Emission Trading Mechanism

With the rapid development of the global economy,the industrial level has reached an unprecedented level.As a result,a series of environmental problems have been brought forth.Among them,the continuous increase of greenhouse gas emissions such as carbon dioxide and global warming have become urgent problems.As a global carbon emitter,our country has long been committed to reducing carbon emissions and improving the environment.In December 2017,the National Development and Reform Commission announced that taking the power industry as a breakthrough point,the national carbon emission trading system was officially launched,and issued "National Emissions Trading Market Construction Scheme(Power Generation Industry)".With the transformation and upgrading of China's economy and the national carbon emissions trading market was officially launched,the trading of carbon emission rights will become the major measure considered by governments and enterprises to reduce carbon dioxide emissions.However,government as the maker of carbon emission reduction decision-making,enterprises as the main executor of carbon emission reduction decision-making,how to play their respective advantages in the process of carbon emission reduction becomes one of the problems.At the same time,enterprises in the supply chain system,the effect of separate emission reduction companies and the effect of upstream and downstream enterprises to reduce emissions is need to attract attention.The impact of parameters in the model is also worth discussing.In order to study the above problems,this paper based on the carbon emissions trading market,studies the secondary closed-loop supply chain composed of manufacturers and retailers,and constructs the carbon emission model when manufacturers and retailers pursue their own profit maximization,taking the manufacturer's emission reduction level as the decision variable,the optimal value of profit and emission reduction level is obtained through the backward induction method.It is found that the profit level of the retailer is positively related to the manufacturer's emission reduction level,and then proposes to coordinate the supply chain through two contracts to improve the manufacturer's emission reduction level and thus increase the profit value of manufacturers and retailers.Then compare the profit level and emission reduction level before and after the implementation of the contract,assign each parameter,verify the model numerically by Matlab,and analyze the influence of different parameters on the model.The findings are as follows:(1)Retailers can get more profits after the manufacturers implement emission reduction;(2)The profits of both retailers and manufacturers have increased under the contracts of retailers share manufacturers' investment costs for emission reduction;retailers' profits have risen under the contract of increasing profit by sharing emission reduction,but the increase or decrease in manufacturer profits depends on the size of the parameters.(3)Comparing the two kinds of contracts,we find that the retailer has higher profit under the contracts of retailers share manufacturers' investment costs for emission reduction.The increase or decrease of the manufacturer's profit under the two contracts needs further discussion.(4)No matter what kind of contract,the manufacturer's emission reduction level is higher than that without any contract,and the emission reduction level under the first contract is higher than the second.(5)In the long run,carbon emissions trading market will have a long-term impact on enterprises with large carbon emissions.