Study On The Evolution Of Urban Spatial Form In The Oasis Of The Silk Road

Xinjiang is located in the north,middle and south of the three ancient silk road intersection,is the silk road economic belt "core zone".Hami is the eastern gateway city of the "core zone" and plays an important role in regional connectivity.The history of hami can be traced back more than two thousand years.It was once an important node on the "land silk road".The unique arid climatic conditions,diverse nationalities and regional cultural differences in xinjiang have created the unique urban spatial pattern of hami.But as a result of the republic of China since the combination of inside and outside factors,hami city space form produced such as soldiers-the contradiction and development pattern,the ecological environment deterioration,a series of problems such as imbalance of industrial structure,context is lost.Hami city space form,therefore,has certain representativeness,hami city spatial form evolution and its dynamic influence mechanism for hami city of the future development direction,the way is very necessary,at the same time,also has a search for similar silk road oasis in xinjiang urban space morphology optimization strategy and the importance of context protection path.Based on the historical geography foundation of the development of hami city,this paper takes the time line as the transverse axis,and the various functional elements of the city are studied in the longitudinal entry point.Firstly,the spatial morphological evolution process of hami city is divided into three research periods and its periodical characteristics are summarized;(1)the development stage of single center stage(self-succession)in 1912 – 1959;(2)From 1959 to 1992,the development stage of dual center polymerization(traffic dominant);(3)From 1992 to 2015,the multi-center group development stage(industrial dominant).Secondly,the paper respectively from the internal space and external form outline two aspects of the general characteristics of urban spatial form evolution was studied,the conclusion is:(1)which is dominated by the administrative subject more urban space form "by leaps and bounds" evolution characteristics;(2)Under the influence of regional traffic,urban space extends from axis to circle;(3)The development characteristics of the city from water to water in arid oasis area;(4)The characteristics of resource-dependent industrial expansion in the rapid development of urban industrialization.Finally,based on natural ecology,traffic development,policy system,industrial economy four aspects depth profiling of hami power influence mechanism of urban spatial form evolution,from the urban spatial expansion,local relations-corps,oasis ecological coordination and internal functional organization,historical context five aspects proposed optimization strategy of hami city space form.