Northwest Valley Cities Spatial Development Model

Valley City in northwest China are widely distributed as a special kind of cities, valleys, cities faced in the course of its development than other types of cities with more complex constraints, particularly in urban space development on the more prominent. Northwest Valley to explore urban space development model, not only on the valley urban development and human settlement construction practice of direct significance, but also to explore the valley in northwest China city eco-construction and development model has important theoretical exploration and practical significance.Tianshui environment because of their special geographical features of landscape, its emergence, formation and development of the inner space exists a unique order and specific spatial development paradigm. Due to restrictions on land-valley, the development of a distinctive feature of valley development of the city.Paper space from urban planning point of view to the city in which the natural valley landscape as a starting point, the use of historical analysis and synthesis of the comparative method, Tianshui structure and layout of urban construction land expansion of urban space to sort out, on the urban form evolution of research, analysis of morphology evolution Dete Zheng Tianshui city, problems, factors and dynamic mechanisms, explore the pattern of Tianshui in the valley under the constraints faced by the most striking contradiction, of Biaoming Tianshui City Kongjianfazhan highlight the main problems facing the performance space in the city restrictions on development, urban resource use pressure and fragile ecological environment in three main areas.And valley pattern of Tianshui under the restriction of space research capacity were estimated, focusing on population size predicted from Tianshui, Tianshui urban population on the scale of land resources constraints and water constraints on the scale of the urban population in Tianshui the three aspects of capacity for Urban Space conducted a study that facing the development of urban space in Tianshui the urgency and necessity. Combined with the actual development of Tianshui city, follow the local conditions, regional, objectivity, dynamic principles, the analysis and draws on the theory of compact development model based on the scale from the reasonable control of the layout restructuring, urban functions community organizations and other elements into the four aspects of analysis, under the restriction of the Valley pattern of spatial development of Tianshui City in facing many problems, the urban land resource constraints for the most basic conditions. Valley pattern and land resources available in the city of Tianshui City, building the intensity, the demand for compact development. City in which to consider the economic development stage, and the city's comprehensive strength, Tianshui City in the future, this necessarily requires a compact layout of urban space structure, intensive use of land resources valley. Paper pattern established in the valley under the restriction of Tianshui city space of compact development pattern of urban land resources under the overall evaluation index system.