The Circular Economy Of Material Flow Characteristics And Flow Pattern

The resource and natural environment are the essential factors to the economic development. The economic development of human has obtained the great achievement since the industrialization of the world, but the contradictions between environment and economic development are becoming increasingly acute. The production and consumption have brought about the overextension of resources, and the massive discharge of pollutant has resulted in a loss of balance of the ecology. In order to prevent contradictions from becoming intensified and realize a coordinated and sustainable development of population, economy, society, resource and environment, it is urgent to develop the circular economy in China.The traditional economic theory only puts the emphasis on the value circular flow, ignores the material circular flow. As a new economic pattern, the circular economy takes value circular flow as well as material circular flow into account. Therefore it is of great important value in theory and significance in practice to have a research on the characteristics and flow laws of material flow within circular economy.This thesis is composed of nine chapters. The first chapter is the general introduction of the circular economy. The research background and significance, the object and methodology, the basic thoughts and structure, the contribution and main innovation have been carried out in this chapter. The second chapter is the literature summary, the relevant theory research results have been organized and evaluated, including the development history, the concept and theoretical basis, the basic operating principles, research methods, developing mode, the chief obstacles, policy proposal of the circular economy. The third chapter is the basic theory analysis of the circular economy. The concept of circular economy, the ecological and economic characteristic, the type of material flow analysis, indicator system have been primarily studied in this chapter. The relations between material flow analysis and circular economy has been studied by three perspectives:the science paradigm, the goal of analysis and the content of analysis. The four chapter is the research of the reduce, reuse and recycle principles from the perspective of economics. In this chapter, the new concept of marginal reducing indicator is put forward and the realizing law of reducing principle is discussed. At the same time, some other contents have been studied, such as the fair and efficiency of reduce, etc. The fifth chapter is the analysis on characteristics of material flow within circular economy systems with time lag influence. Based on the method of material flow analysis and the theory of circular economy, the definition of the "material flow's time lag" is given, a theoretical model of MFA between environmental and circular economy systems with time lag influence is established. Under the framework of the theoretical model, all material streams in the theoretical model are classified and denominated according to mass balance theory and listed in mass balance equations. On this basis, the amount comparison of natural resources and wastes within different time periods is studied. The sixth chapter is the study on moving rules of material flow within the circular economy. Based on studying the internal material flow classification of the economic systems, the rules of the internal material flow within the economic systems are summarized. With the definition of price elasticity of demand of material flow, its changing rules are studied. The seventh chapter is the material flow analysis on regional development of circular economy with time lag influence. The total material input and output, the input and output per capita and per unit GDP of shannxi province are analyzed. The econometric model is built to speculate the time lag's influence. The eighth chapter is the supplement and verification of the result of material flow analysis by application of econometric method. Based on classification of the industry and energy, the econometric models are set up and the correlation analysis among the environment, energy, population and economy has been given. In the last chapter, ten conclusions have been summarized. The shortages of current research and the direction for future research have been put forward.The innovations of this thesis include the study on characteristics of material flow within circular economy systems with time lag influence, the theoretical innovation about the moving rules of material flow within the circular economy, the theoretical innovation about the reduce principle.