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SYSTEM DYNAMICS STUDY ON COMPLEXITY

Since last century, complex systems, complexity problems and their research have become the basic problems of systems science, social-economic science, physics, biology and so on. Complexity science is so called the science of the 21 st century. This paper looks back to the progress made on the study of complexity and complex systems in recent years and compares the Santa Fe approach with System Dynamics methodology in their dealing with complexity problems in social -economic systems. The latest outcomes of social-economic complex systems research, which were made by using the theory and method of System Dynamics, are also the focus of this paper. When System Dynamics came into being, it has faced a complex system of society, economy and ecology and already made important contributions to the study of social-economic systems. The key points of the study of System Dynamics are system structure and its relationship with corresponding behavior modes. Finally, the author proposes using System Dynamics as the basic approach and framework and synthesizing with other approaches to analyze and solve the problems of social -economic complex systems. This scheme is not only effective but also practical to complex social-economicand eco-systems .