Study On The Stability And Eco-efficiency Assessment Of The Industrial Symbiosis Network In Eco-industrial Park

With the sustained and rapid economic growth and increasing population, the resource constraints and pressure on the environment that our country faced unprecedented has increased in recent years. How to promote harmony between man and nature, to achieve economic growth and social development of comprehensive, coordinated and sustainable development, became an urgent issue needed to resolve in the economic development process. Recycling economy development model was put forward in the context. The building of eco-industrial parks is an important means of promoting circular economy for all countries in the world, is the best mode to increase resource utilization, reduce pollution, protect the ecological environment, and industrial symbiosis network is an important research field of industrial ecology.The paper applies multidisciplinary synthesis, adopts theoretical and demonstration research, the methodology of quantitative and qualitative analysis, dynamic and static analysis, and mainly studies the stability of industrial symbiosis network and eco-efficiency evaluation system. The study can provides the instructive grope for the structure optimizing of eco-industrial park development.Firstly, the fundamental theory frame of industrial symbiosis network in the eco-industrial park is set up on the basis of the latest research and practice, and related theories are systematically reorganized and commented.Secondly, the paper analyzes the formation mechanism of the symbiotic relationship. With the tool of transaction cost economics, the paper identifies the formation condition of the symbiotic relationship. The paper presents the concept of the internal and external stakeholders of the symbiotic relationship and thinks the formation of the symbiotic relationship as the result of the interaction of the stakeholders and presents the mechanism that causes the balance of the symbiotic relationship. From the five aspects of power source, driving force, pulling power, binding and support force, the paper sums up the mechanism factors of industrial symbiosis network.Thirdly, the paper demonstrates the both competition enterprises can not only reach the their optimum efficiency either in the market or in the eco-industrial, by applying logistic growth equation, but also confirms the necessity of establishing symbiotic relationship for industrial system and realizing ecological for all levels, while seeking the ideal symbiotic model and stability condition in eco-industrial park, in order to providing scientific basis of choosing rationally industrial symbiosis model.Finally, a scientific and practical evaluation index system of industrial symbiosis network in the eco-industrial park, which is composed of four aspects: economic development, cost saving, resource consumption and pollution emissions is designed and a mathematical model with the method of DEA and Grey Relational Analysis is established to evaluate the level of eco-efficiency of industrial symbiosis network. Then, the paper analyzes the industrial symbiosis network of TD eco-industrial park and MC eco-industrial park.