Research On Industrial Agglomeration Policy And CO₂ Emission Reduction Policy Of Iron And Steel Industry Based On Game Theory

Iron and steel industry is an important basic industrial sector,which has provided an important material basis and raw material guarantee for the development of national economy and national defense construction for a long time.Although China's iron and steel industry has achieved remarkable achievements,it also faces many other problems.Especially the production and emission reduction problems such as the ineffective implementation of industrial agglomeration policy.the increasing pressure of emission reduction,and the lack of market competitiveness,seriously restrict the healthy and orderly development of China's iron and steel industry.Therefore,it is of great theoretical and practical significance to study the production and emission reduction problems of iron and steel industry and find the appropriate way to solve them.Based on the game theory.this paper starts with the two fundamental problems of industrial organization structure and CO2 emission which the iron and steel industry urgently needs to solve,analyzes and discusses the feasibility of eliminating backward capacity,merger and reorganization and other industrial agglomeration policies,and the change to production level(steel output level,social welfare,profit and CO2 emissions)and industrial concentration of implements these policies.Through introducing a number of CO2 emission reduction policies,the paper analyzes the selection of output and emission reduction intensity and other economic factors under the constraints of industry emission reduction and emission reduction policies,compares the effect of emission reduction intensity of the enterprises and the changes of other economic factors between the single emission reduction policy and the mixed emission reduction policy,carbon tax mechanism and carbon trading mechanism.On this basis,the paper discusses the influence of the future implementation of product differentiation strategy and dynamic adjustment strategy on the development of iron and steel industry.By introducing the concept of product differentiation and the limited rational expectation strategy,the paper analyzes the effect of product differentiation on the selection of output and emission reduction intensity and other economic factors.At the same time,this paper establishes the output selection model under dynamic condition,studies the dynamic game situation of the steel oligopoly enterprises and analyzes the stability of steel market.Through the research,it is found that the elimination of backward production capacity and appropriate merger of enterprises is advantageous to the social welfare of iron and steel industry and the increase of enterprise profits,which is advantageous to the CO2 emission reduction.But the difficulty degree of mergers and acquisitions among enterprises is different,and the difficulty degree of industrial concentration is also different.The implementation of carbon tax and carbon trading policies can meet the emission reduction targets.However,as the impact on social welfare,producer surplus and other indicators is slightly different,the choice of emission reduction policy needs to be considered comprehensively.Under the carbon tax mechanism,the mixed emission reduction policy is more advantageous to the development of iron and steel enterprises and industries.Under the carbon trading mechanism,it is necessary to consider the emission reduction targets and the requirements of economic indicators to decide whether to use single carbon trading policy or mixed carbon trading policy.Product differentiation increases the social welfare of the iron and steel industry and other related indicators,and it can also make the fluctuation of manufacturers' output adjustment weakened by the fluctuation of competitors' output adjustment.But when increasing the degree of product differences and the adjustment factor excessively,the steel market is more likely to fall into imbalance.