Study On Evolution Of Urban Space Form Of Arid Areas Oasis Of Cities

Urban Oasis is arid areas of human production, gathering centers and important economic growth in the region living in extreme, systematic study of the evolution of its urban space for the realization of urban land in arid areas oasis type rational utilization and sustainable economic development has important theoretical and practical significance. In this paper, Zhangye City as an example, since 1949 through the development of urban space Zhangye analyze, summarize oasis type of urban development and the characteristics, analyzes the development of motivation, raise the living environment and the development of local development strategies to adapt to the ecological awakening in the background.Zhangye city development through the following four main phases: 1949-1978, with resource development-oriented, a main city at the core of urban space to grow. 1978-2002, in the main city core, outward expansion of urban construction land level, but relatively slow pace of urban development. After 2002, the county revoked Zhangye City, to prefecture-level city, and with the further implementation of the country’s western development strategy and Gansu Hexi recycling strategy for socio-economic development of Zhangye provides a good opportunity, Zhangye city space has been rapid development, the formation of the axial type groups suspicious of urban structure. After 2008, with the "ecological awakening" oriented Protection and Development, Zhangye urban living environment has been greatly improved, becoming arid region of northwest inland wetlands and human settlements development model case of contact.In this paper, since 1949 the city of Zhangye spatial evolution finishing the course, learn from the evolution of urban space and urban studies oasis experience, analysis of Zhangye space under rapid urbanization, ecological awakening and other background characteristics of evolution, laws, mechanisms, situation, while the city of Zhangye oasis arid areas, for example, reveal the oasis city construction and development process of ecological resources, land use, national policy, the relationship between economic development and population growth, urban space oasis further reveal the evolution of the law, characteristics, mechanism and development trend.