The Research Of The Coupling And Fluctuation Of Lanxi Urban Region And PREE In The Different Spatial And Temporal Scales

Urban region is dynamic development process, which is affected by the internal system and external disturbance. On the other hand, it is a process that urban interact with region. With the background of new kind of urban region and "the Belt and Road", Lanxi urban region shows a complex nonlinear evolution feature, which is the result of the interaction among population, resources, environment and economic system. There are several factors that seriously restrict the development of urban region, such as the imbalance of the development of urban group, the extreme differentiation in policy, economic investment, utilization degree and the number of natural resource, human factors, and the fragile of ecological environment. So it is significant to study Lanxi urban region and the dynamic influence of PREE system during the process of development.At the beginning of this study, the author reviewed some research about the development of urban region and PREE system at abroad and home. Then the author drew the lesson from the system theory, dissipative structure theory, synergetics and brittleness theory of complex system. Finally, based on the summary of some achievements of relevant research, the author determined the scale of Lanxi urban region and made the qualitative analysis the relationship among urban development, population, resource, environment, economic system of Lanxi district.The main parts of this thesis are chapter four and chapter five, which talks about the quantitative analysis of Lanxi urban region and PREE system. Based on the coordinated development of different elements, the author used Markov chain method to calculate the development trend from 2002 to 2013 from the regional and municipal scale, and then revealed the process of the fluctuation of every systems. What's more, according to the compelling relationship among urban development and PREE system, PEEE internal relationship and the interactive effects between them, the author made a quantitative calculation about the results with the help of Markov chain method. At last, the author put forward the possible evolution direction and the specific concept of sustainable development of Lanxi urban region.