Study On System Evolution And Symbiosis Effects Of Industrial Symbiosis

Since the industrial revolution in the18th century, the total material produced by human beings has exceeded that of the past, which is along with the huge amount of resource consumption. It has strongly disturbed the environmental system, and has led to serious resource shortage, environmental pollution and ecological damage worldwide. These issues have posed serious challenges to human beings in order to deal with the conflicts between increased population, resource consumption, environmental degradation, and rapid industrialization and economic development. To achieve sustainable development, the most crucial way is to find the methods of eco-transitions of industry and economic development model. Furthermore, the development of ecology inspired the idea of mimicking the ecological systems to modify the industrial system, thus, the concept and practice of industrial symbiosis emerged, which attracted abundant attentions of theoretical research and local practice. The systemic research of industrial symbiosis, as the heated topic of industrial ecology and circular economy, has the crucial theoretical and practical values.The majority of existing researches have the feature of qualitative analysis that lacks of the operable quantitative models. In addition, the purely theoretical analysis could be easily missing the links with the practices and operable quantitative models. Thus, the research retraces and summarizes the cradle and theory of the concept of industrial symbiosis, and then takes the typical "Jinchang model" as the case, firstly, to investigate the waste flows of the system and assesses the circular index in order to depict the features of waste flow and the evolution of the system. Secondly, through the analysis of connection rate, and the comparison of Jinchang with worldwide often cited and relatively successful examples, the research evaluates the stage to which extent the JinChang case is achieved and its evolution process. Lastly, applying the revised input-output analysis, total factor productivity, eco-efficiency, and data envelopment analysis, the research evaluates the symbiosis benefits of industrial symbiosis system of Jinchang. More specifically:(1) Introducing the method of Production Matrix regarding the quantitative analysis of the conserved flows over a given time, the research quantitatively investigates the waste flow that is the bond for industrial symbiosis, and then evaluates the circular index to reveal the features of waste flows and evolution of industrial symbiosis system.(2) Referring the concept of bio-connectance, the research introduces two concepts of ecological connectance and ecological rate of total connectance, which are regarded as crucial indicators for the evaluation of the eco-degree of industrial symbiosis network. Through the evaluation of the state quo of industrial symbiosis development in Jinchang, and then comparing it with the international often cited examples, the research assesses the stage and completion degree of the industrial symbiosis system of Jinchang. Based on the results, the trend of development is decided.(3) The research introduces the concept of Exterior Region, and adopts the revised input-output analysis with the concepts of Exterior Region Influence Coefficient and Exterior Region Reaction Coefficient in order to reflect the extent of efficiency in the internal circular and industrial symbiosis system. Based on the results, the research investigates the dynamics of industrial symbiosis system:according to the model of Malmquist Index of DEA, the research analyzes the changing trends of total factor productivity under different circumstances, which reflects the impacts of the factors of resource input and environmental evolution on the output efficiency of industrial symbiosis system. Furthermore, adopting DEA and CCR model, the research evaluates the eco-efficiency and the environmental performance of each firm within the system to provide comprehensive evaluation of ecological benefits of the industrial symbiosis system.