Research On Green Supply Chain Management Diffusion Models

With the continuous development of industrial civilization, human industrial activities have resulted in a growing number of environmental problems, such as a variety of large-scale climate change, environmental pollution, soil erosion, ecosystem damage and other ensued global environmental disasters. People began to turn attention to ecological destruction and the resulting consequences due to the rapid economic development, and have continually searched for the methods which can minimize and eliminate negative impacts on ecological environment of operation processes of industrial enterprises. Green supply chain management (GSCM), as a systematic environmental management approach, has become an important corporate tactic and strategy to comprehensively enhance the enterprises’ economic, environmental and social performances. In industrialized countries, governments and non-profit organizations have formulated policies, regulations and standards such as WEEE Directive implemented on August13,2005and RoHS Directive implemented on July1,2006in order to promote and standardize GSCM implementation. Many leading international companies have brought the concept and measures of GSCM to build their GSCM system in order to promote upstream and downstream enterprises in a supply chain to carry out environmental practices.In the past two decades, the global industrial development and economic integration have contributed to the unprecedented development of the Chinese economy. A large number of manufacturing sectors in the supply chains have been transferrd to China and other developing countries, which has provided a lot of opportunities to the development of local economy while causing more pollutions and destructions on the local ecological environment. In this context, under the preasures of foreign environmental laws and regulations as well as the leading companies, some of Chinese export enterprises and joint ventures began to adopt GSCM and other innovative environmental management practices, and diffuse these environmental management measures across supply chains. The Chinese government also has learnt from foreign advanced experiences to formulate a series of policies and legal norms to encourage enterprises to implement GSCM. However, due to the high cost and the complexity of implementation, GSCM in Chinese enterprises is adopted at a low level, while the implementation rate is relatively poor.Based on this, it is important to understand how enterprises implement GSCM and other environmental management measures under the influence of different factors which can provide more reasonable proposals to make the policies of promoting the transmission and diffusion of GSCM. In order to explore the diffusion mechanism of GSCM, the research framework of "Reality analysis-Theory modeling-Countermeasure analysis" is adopted. This thesis starts with the status quo of the GSCM diffusion among Chinese enterprises; then, analyzes internal and external factors of enterprise group and their influencing rules of GSCM diffuiosn with the complex system theory; at last, explores the government driving mechanism of GSCM diffusion with the methods of system dynamics and evolutionary game.Firstly, based on the literature study, the research defines the concept and features of GSCM diffusion, and analyzes current situation of Chinese GSCM diffusion by utilizing the Bass model to fit the sample data of selected GSCM practices. Then, the thesis builds up the system framework and research framework of GSCM diffusion to summarize the influencing factors and GSCM diffusion processes, and clarifies two main contents of GSCM diffusion model including GSCM diffusion model among the enterprises and the influence model of the government.Secondly, the thesis explores the GSCM diffusion mechanism among the enterprises by analyzing the internal and external factors of enterprises. Based on the establishment of the decision-making dynamic model of GSCM, the thesis builds the GSCM diffusion model among enterprises with the use of complex system theory in order to dissect the influences of the size of enterprises group, the interaction of different types of enterprises, social pressures on GSCM diffusio, and external facotrs of the enterprises gourp.The results show that the interactions of upstream and downstream enterprises and the social pressures will increase the diffusion rate of GSCM and the proportion of the enterprises which implement GSCM. Moreover, the increasing size of enterprise group will accelerate GSCM diffusion, but cyclically decline the proportion of the enterprises with GSCM.Finally, the thesis explores the government driving mechanism of GSCM diffusion under the influence of different factors. So as to describe the impacts of price subsidies on the social welfare, the sales of green products, and the proportion of the enterprises which implement GSCM, the research establishes a three-stage game model of GSCM diffusion among competitive enterprise based on the price subsidies of the government. Meanwhile, the establishment of a system dynamics model can complement and improve the evolutionary game model, and the numerical simulation results show that the government subsidies to the consumers who buy green products or the enterprises which implement GSCM can promote GSCM diffusion among enterprises. In addition, the consumers’ environmental awareness will greatly facilitate the diffusion of GSCM. The results provide insights into the government’s decision-making of promoting GSCM diffusion.