In Northwest China has the world’s largest area of the loess the deepest, most complete distribution of the Loess Plateau, according to archaeological excavations have proved that many of the early cultural sites in this region and future generations towns choices are coincide, the Northwest Regional Nature environment on human activities about force limiters continuing very long. which also affected the distribution of traffic line selection and towns. Jing River living in the northwest, must pass through the Silk Road. So here’s urban distribution, will inevitably be the impact of the land transport framework. Since the founding of the Ming Dynasty, the northwest of Jiayuguan sector, in this environment, Gansu becomes to the forefront of national amalgamation, southeastern Gansu Province as the "the Guanlong fan John", after the next, there has been a very special status:it is both within China outside the buffer zone of the barbarians ", but also to control the southwest Tibetan the Fuyu northwest" Zhufan,"outposts and defense. Therefore, the region’s urban layout, the defense has a certain influence and role. The same time, the town is the center of human activity, there would be the existence of the town. The quality of the population, how many people are engaged in the production and living activities, and history formed by the accumulation of social practices will become an important factor affecting the development of cities and towns. The layout of the town of the same direct impact on the urban layout factors include:economic factors. Such as water conservancy, transportation hubs, and resources; geographical environment. Such as topography, geology, hydrology, meteorology; urban condition. Such as population size, the scope of land. Indirect impact on the urban layout factors include:historical factors. From the start of the formation, the town has been experiencing a natural development and the government’s planning and construction, showing a different form in each period; social factors. Including social systems, different sectors of society, the interests of the Group, will, power, urban location, direction of development, planning and thinking and urban layout structure plays a very important role. |