The Research Of Interaction Mechanism Between Urbanization And Ecological Environment In Ecologically Fragile Areas-a Case Study Of Hechi City

The urbanization of China has developed rapidly and made remarkable achievements since the reform and opening up. But there is much disharmony in the process. On the one hand, the rapid development of urbanization strains on the ecological environment; on the other hand, the ecological environment also constrains the further development of urbanization through its own way. Their contradiction became greater day after day. This phenomenon is even more marked in the fragile ecological environment. It is becoming more important that study on the interaction mechanism and the coupled model between urbanization and ecological environment on the basis. This paper takes Hechi City, a typical region of fragile ecological environment as an example. It analyzed the characteristics of urbanization and ecological environment of Hechi, and it also quantitative evaluated their index. On this basis, it analyzed the coupled models between urbanization and ecological environment of Hechi in the new century by the second law of thermodynamics. And then it analyzed the effects of urbanization stress on the ecological environment, the effects of ecological environment constraint on urbanization, and the interaction mechanism between urbanization and ecological environment of Hechi. Finally, it proposed the development model and implementation strategy of health urbanization of Hechi based on the interaction mechanism between urbanization and environment. This article is divided into six chapters:In the first chapter,first of all, it summarized the interaction mechanism between urbanization and environment at home and abroad, then it introduced the purpose and the significance of the research of this paper, at last it scanned the framework, content, methods and study area of this paper.In the second chapter, first of all, it analyzed the characteristics of urbanization of Hechi. Then it focused on building index system to analysis the development of urbanization of Hechi. Finally it explained the results.In the third chapter, first of all, it analyzed the characteristics of the ecological environment of Hechi. In particular, it analyzed the fragility characteristics of the ecological environment of Hechi. Then it found an index system to analysis the development of ecological environment of Hechi. Finally it also explained the results. In the fourth chapter, the second law of thermodynamics in physics is applied to the research of coupling between urbanization and ecological environment, according to the result of the second and third chapter; it evaluated the development of the urbanization and ecological environment of Hechi in the new century. Then it analyzed the coupling between urbanization and ecological environment. Finally it also explained the results.In the fifth chapter, it calculated the eco-environmental pressure index and environmental population carrying capacity of Hechi,and then it analyzed the effects of urbanization stress on the ecological environment and the effects of ecological environment constraint on urbanization. Finally, it summarized the interaction mechanism between urbanization and ecological environment.In the sixth chapter, it proposed the development model and implementation strategy of health urbanization of Hechi based on the interaction mechanism between urbanization and environment on the basis of the previous analysis.