The Evolution On Urban System And Urban Scale Space Distribution In Hexi Corridor During Qing Dynasty

The urban are the senior settlement shape of the human society, it is its era's representative of civilization too .As regional centre, being its corresponding whole area's economic growth pole of core,the urban system is growth centre system of the whole regional economy and subject frame of the space structure. The Hexi Corridor is the most vigourous and potential area in the social economic development of Gansu Province,Gansu Province has already focused the construction on and taking what this district includes in urban general plan of development plan in the whole province.In terms of historical geography of city, it is the prerequisite of making the planning of urban system to hold the historical course of urban development of area. It was the important period for urban development of the Hexi Corridor in Qing Dynasty, having basically established today's urban pattern,visual angle studied from the course, urban of the He xi Corridor experienced 3 stages of system in Qing Dynasty,th e city of Guarding post period, Guarding post and Fu Zhou city compatible period, Fu Zhou city period. After the second year of Yongzheng,having formed 2 city of Fu 2 city of Zhou7 town 1 Ting town 2 Xian cheng town and several towns. The county is under the jurisdiction of the office Tertiary urban system .This course is the transition period of the urban function too, the military color of the cities and towns is weakened gradually,the main city has realized the transition to politics type, traffic type, culture type, economy comprehensive cities and towns.The external shape of the city is square and rectangle, the most are make up the main city and pass city . The arrangement of inside landscape is influenced by geomantic omen thought deeply the city, Supreme institution's many overall arrangements are in the northwest position, the cultural educational institution is in the southeast position the overall arrangement of view of sacrificing of religion has reflected the principle of the law astronomical phenomena ground. Comparatively pay attention to the construction of the view of the garden in the urban planning, the Taoist temples and Buddhist temples is the important characteristic of the view within the cities and towns. The City commercial market overall arrangement was at arterial street and in pass city. Until middle and later periods, the development of city has already broken through the city wall, has developed towards periphery of city wall. Middle and later periods of Qing Dynasty, the scale of urban population of Fu Zhou is about 30,000, the large county town is at least 10,000, the urban population in the little county is about 5000. Later period of Qing Dynasty, Regarding the Liang Zhou state office city as samples, the urban population in the office state is about 10,000. Regard state directly under the jurisdiction of An-xi as samples, the number of the urban amount in the county town is about 900,the large county city about 5000 people, the small county is about 2000 people. In general, the whole regional city size is small, and has not formed the key town of a more extensive and more powerful one.The structure of urban space distribution has obvious depend on traffic and river at the point ,it formed the space pattern of some overall arrangements that three horizontal longitudinal four centre. The space distribution region differs greatly, east and middle part are greater than the west, the new cities and towns that rise are all distributed in the area to the west of the Jiayu Pass.The natural geographical environment in the area and humane factor of era form the dynamical system of urban development .On the basis of investigation of the urban relevant problems of the Hexi Corridor in Qing Dynasty ,this paper think that the water resource will be a restriction factor of urban development in the future,th ere is interact respond relationship that between ecological environment and urban development,the ecotype travelling type cities and towns are that urban development will be mainly tended to in the future, the traffic remains the importance of urban development to rely on, the urban planning should stress the intension of the historical cultural city.