Research Of Spatial Form Dimension Of Residential Plot In Xi’an Ming City

City consist of "Mark" and "Stroma".The city residential space, plays the role of " Stroma ". Density, one way to recognize the multidimensional attributes of city form,, is a bridge to establish the relationship between the "quantity" and "quality" of space. By analysising the quantitative indicators of the residential space built area density, linking density and spatial form, establishing the cognitive system of residential density, it helps us to understand the changes in the development of urban form and urban development issues now have a more profound understanding of.This article will clear the city of xi’an as the scope of the study,This article will clear the Ming city of xi’an as the scope of the study, This area has experienced a long period of historical development.After the liberation and development of different experience, it presents itself a picture with collaging texture and rings to us nowadays. Among the core protection and development area in Xi’an, the residential space is the most conflict area in the future living space.It is the largest proportion of the area and a wide variety of types of space as well. Analysis of the existing residential space from the 2D scene, density difference is the most intuitive features.Firstly, combing residential construction background and major urban construction manner prescribed in different periods, to determine next biggest feature of the existing urban living space is the "Lasting-Collage." Secondly, we study the general characteristics of the population density Area of the city. In the way of conzen school, morphological awareness to block as the basic unit. Analysis the density in building coverage, floor area ratio, the number of layers and the average rate of open space. Third, residential land for core subjects, divided into build private homes and four periods of five categories. These five categories of status of residence Lot Summary distribution, density index characteristics, different sub-types of density and morphology, density generated causes. Concluded Ming city living block density characteristics, and internal living life lasted city conservation as the standard for evaluation, and the density of residential plots of indicators for control and form guide.