| The manufacturing industry is the foundation to support the high-quality and green development of China’s economy,and it is also the foundation to promote the symbiotic and coordinated development of regional industries.As an important manufacturing base in China,Jing-Jin-Ji region has a strong endowment advantage and is a demonstration region for the transformation and upgrading of manufacturing industry.However,the development level of manufacturing industry in Jing-Jin-Ji is not balanced,the symbiotic relationship and interest relationship of the manufacturing industry chain enterprises are not coordinated,and the effect of green transformation and upgrading is not ideal.Exploring the development path of the green transformation of manufacturing industry in Jing-Jin-Ji,analyzing the factors that hinder the green transformation of manufacturing enterprises,deconstructing the interactive relationship between manufacturing enterprises in Jing-Jin-Ji,and revealing the development and evolution direction of enterprise transformation and symbiosis are helpful to the formation of the high-quality development pattern of manufacturing industry in Jing-Jin-Ji.Aiming at the problem of green transformation,this thesis takes Beijing enterprises and Jin-Ji enterprises upstream and downstream of the industrial chain as the research objects,considers the game relationship between the enterprises,constructs a game model that accords with the maximization of the interests of the enterprise subjects,and reveals the dynamic evolution law of the participants’ strategies through simulation verification.Aiming at the symbiotic behavior among manufacturing enterprises,this thesis takes the enterprises in JingJin-Ji as the research object,considers the interactive relationship among the enterprises,establishes the dynamic symbiotic evolution equation of the symbiotic system of manufacturing enterprises in Jing-Jin-Ji,and deconstructs the interactive relationship among the participants of the symbiotic system of manufacturing enterprises and the evolutionary path of the symbiotic system through simulation.The specific research contents of this thesis are as follows.1.The research results,mechanism and evolution direction of green transformation and symbiosis mode of manufacturing enterprises are sorted out and explained.This thesis expounds the research background and significance of green transformation and symbiosis of Jing-Jin-Ji manufacturing industry from both practical and theoretical aspects,and determines the research content and overall thinking.According to the bibliometric method,this thesis makes bibliometric analysis on the development trend and research hotspots of enterprise green transformation and enterprise symbiosis by using Cite Space software,and summarizes the driving factors of enterprise green transformation and the connotation of enterprise symbiosis.This thesis analyzes the impact mechanism and action mechanism of the green transformation of Jing-Jin-Ji manufacturing enterprises under the environmental regulation and technological innovation,as well as the interaction relationship and evolution direction of the symbiosis system of Jing-Jin-Ji manufacturing enterprises.2.Evolution and simulation of green transformation strategy of manufacturing enterprises in Jing-Jin-Ji from the perspective of industrial chain.This thesis analyzes the utility benefits of upstream and downstream enterprises in the manufacturing industry chain,and builds an evolutionary game model between them.According to the constraint conditions,the evolutionary stable strategy of the game between the two sides of the enterprise is discussed on a case-by-case basis,and the m-ABM simulation model is used to verify the effectiveness of the strategic choice of the manufacturing enterprises in Jing-Jin-Ji and to explore the green transformation path of the enterprises.It is found that enterprises’ green transformation strategy mainly depends on their own benefits.When enterprises can not benefit from change,it depends on the other enterprises.There is a threshold value for the final green contribution of products to the strategic choice of enterprises.When the contribution is lower than the threshold,the higher the contribution,the more profits the enterprise will get,and the higher the enthusiasm of the enterprise for green transformation;When the threshold value is exceeded,the higher the contribution,the lower the enthusiasm for green transformation of enterprises.The profit coefficient of technological transformation,subsidy of enterprise transformation and non-transformation punishment all have positive impact on enterprise transformation strategies,while free-rider income has negative impact on enterprise transformation strategies.3.Construction and evolution of symbiotic relationship model model for manufacturing enterprises in Jing-Jin-Ji.Aiming at the problems of unbalanced manu-facturing industry in Jing-Jin-Ji low enthusiasm and insufficient motivation of parti-cipants in the industrial system,this thesis constructs a three-way Logistic growth model for enterprises in Jing-Jin-Ji region,and uses Matlab software for simulation to deconstruct the interactive relationship between participants in the symbiosis system of manufacturing enterprises in Jing-Jin-Ji region and the evolutionary direction of the symbiosis system.The results show that the positive and negative co-occurrence coefficients in the symbiosis model and their values determine the symbiosis model among enterprises,which reflects the advantages of enterprises in the system.Under certain conditions,the ecological system will evolve to a stable state.The steady state in different modes is different.Under the mode of independent symbiosis,every enterprise that evolves to the maximum carrying capacity of the environment is bound to die out gradually under the constraints of the environment.Under the parasitic symbiosis mode and the partial symbiosis mode,some enterprises have been nega-tively affected,forming a situation of "dominance".Under the competition symbiosis mode,the development of each enterprise is restrained,and when it encounters vicious competition,the enterprise will die.Only under the mode of mutual benefit and symbiosis,each enterprise can obtain different degrees of benefits and realize real cooperation and win-win.This model is the best model for the evolution of the symbiosis system.At the present stage,the development of Jing-Jin-Ji automobile manufacturing ecosystem is not balanced,and the whole system is still in the symbiotic mode of "one for the better" and "the other for the better".Jing-Jin and Jing-Ji are in a state of mutual resistance,and only Jin-Ji has begun to cooperate.If there is no external intervention,this trend will continue in the short term.External intervention and regulation can promote the mutual transformation of symbiotic patterns and strengthen the cooperation between Tianjin and Hebei.The number of automobile manufacturing enterprises in both places will increase substantially. |
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