A study on the shape of the urban system of the typical Karst—Positive analysis on the basis of the urban system in Guizhou province

Taking the typical Karst urban system of Guizhou province as an example,this paper discusses the size distribution and space distribution with the fractal method.It is showed that the distributions are of fractal.The size-scale structure is loose;the law of the primate town is too big;the middle town is absent.Because of the affection of the Karst terrain and the society economical condition,the capacity of spatial interaction is weak.Finally some advice is put forward for advancing structure of the urban system.On the one hand,we should perfect the system construction of the urban size and give priority to the small and medium-sized cities.On the other hand,we should develop the non-agricultural industry in a more cost-effective manner and promote the development of small town of countryside.In the end,urban development and overall arrangement should be arranged rationally and the urban spatial structure should be perfect.