Application of System Dynamic Model in Urban Agglomeration Development Planning

With a view to the complex dynamic relation of urban agglomeration development system,the thesis studied the relations of Guanzhong urban agglomeration economy growth and its urbanization progress by using system dynamics(SD) model according to the historical data simulation,and found fractal characteristics of size distribution of Guanzhong urban agglomeration raising continuously in the future.By comparing the three projects that were simulated in the model through adjusting policy variables,the thesis forecasted that the hierarchical size structure that presents the Rank-Size Rule development pattern was more propitious to accelerate the urban agglomeration's economic growth than other development patterns.The thesis found investment,interaction among cities and innovation ability of urban agglomeration played an important role in the economic development.Thus,the fractal characteristics degeneration of urban agglomeration should be prevented and the interaction among cities and the innovation ability of urban agglomeration should be strengthened by urban agglomeration development planning in order to(facilitate) the sound development of the urban agglomeration.