Regional Spatial Pattern Of Urbanization And Environmental Response

Under the background of global environment change, the problem of urbanization and environment has become the focus on man-land relationship. The paper study on the ecologic and environment fragile zone urban spatial construction, land,water,climate and so on, those ecological factors changes with the urban construction. On the same, urban-ecological environment interaction becomes more and more. This research is beneficial to study on the urban problem in arid area of Northwest China, and beneficial to study on the control and influence of urban construction upon ecological environment. It has a great theoretical and practical significance on coordinate development between environment and urbanization.ON the basis of research in urban spatial construction and environment influence at home and abroad, First, the paper study on the population,economy urbanization and synthetical index, on the other hand, analysis of the urban spatial form and tendency, including spatial evolution of urban land use and landscape pattern. Second, the paper analysis of the soil,water,climate ecological factors influence with the urban construction, the Eco-Environmental Effect of urbanization and the discrepancy between land capacity in LanZhou-XiNing Region. Last, the paper analysis of the coupling mechanism between urbanization and eco-environment evolution, the factors include that natural environment factor,traffic network factor,urban economy factor,regional policies and systems factor.First is the research on the urban spatial structure. The paper uses the single and comprehensiv index to calculate the urbanization level. That using the urban fractal index,unbalance index,spatial Gini coefficient index,spatial correlation index,gravity model research on the urban spatial structure in LanZhou-XiNing regional, in order to find the population and economy hot spot or cold spot, economy and non-agricultural population gravity center movement. That makes a conclusion that hot spot and cold spot of population urbanization is concordance in space, and there is obviously different in synthetical urbanization.Second, the paper research on the urban interior spatial structure in the case of XiNing city. By using of compactness model,land use intensity model,urban landscape index, study on the type of interior urbanization spatial structure,compactness,Land Use intensity,landscape pattern and the tendency of the development of city inter-space.Next analysis is the main ecological factors influence in the urbanization, including the types and variations of land utilization,variations of environmental quality index. On the same time, the paper research on the water structure,quality,consumption with the urbanization, meteorology and precipitation characteristics, the space distribution between capacity of land resources and eco-environment effects.Last,the paper analyses of the genesis mechanism of urban spatial form and eco-environment effects from the conditions of naturalness,traffic technology,urban economy and policy system. Using ArcGIS technology research the relationship between drainage density,elevation,fractal dimension and urban spatial,capacity of land resource. On the basis of the state transition matrix and buffers, the paper analyses the land use/cover effects from traffic, the traffic network effects to urban spatial structure form, the relationship between the water quality,consumption and the industrial structure, the eco-environment effects from urban economy. Besides, the paper analyses the economic base playing the core role in the urban spatial structure form, using the Voronoi map. At last, the paper analyses the policy system has the propulsive and restrictive dual functions in eco-environment,urbanization spatial structure form and evolution.