中文摘要：

随着城市中心区空间的不断发展,同一城市内的不同中心区的内部空间和构成元素也产生了明显不同的空间发展特征.这种空间分异特征不仅在街区尺度、肌理密度、道路宽度等街巷要素上有所体现,也反映在建筑高度、建筑密度、建筑尺度等建筑要素上.在对空间肌理分异现象初步认识的基础上,从街巷和建筑两方面构建了反映中心体系空间肌理分异特征的6项指标,基于实地的空间调研以重庆市的5个中心区为案例进行了相关的指标计算.结合指标分析发现组团零星型的中心体系模式导致了各中心区职能及空间规模的趋同,而发展时序、发展规模及地形要素则是导致中心区肌理发展分异的主要影响因素.

英文摘要：

With the continuous development of urban central district,urban spaces and forms exhibit notable differences in characteristics.The spatial differentiation reflects not only in the neighborhood scale,texture density,planar elements such as road width,but also in three-dimensional elements such as building height,degree of topographic relief.This paper proposes eight indicators that can be used to describe space differentiation of urban centers from the angle of graphic elements and three dimensional elements.Relevant index calculation is based on fieldwork of five central districts in Chongqing.Based on index analysis,this paper has found that development sequence is one of the most important factor of the spatial differentiation of city centers.Besides,function and terrain factors also exert influences.Based on such analysis,the paper summarizes main features of spatial differentiation of urban centers.