南京居住空间分异的特征与模式研究——基于南京主城拆迁改造的透视

A STUDY ON THE FEATURES AND MODELS OF RESIDENTIAL SPACE DIFFERENTIATION——A Case Study of Nanjing City

城市居住空间的地域分异是城市社会分化最直接的体现。本文以城市的拆迁改造为独特的切入视角,以南京市主城区为研究范围,调查获取了南京主城区所有街道近三年的拆迁改造数据,通过ArcGIS、SPSS等手段进行了数据分析,并以此为基础对近年来南京市主城区的居住空间分异模式进行了总结。文章认为,南京主城区的居住空间目前已呈现结构多元化的雏形,居住空间结构为"圈层"与"扇形"相混合模式,有从单中心向多中心发展的趋势。

With the rapid socio-economic development in China, the requisition to reconstruct the urban space, including the residential space, is drastically discussed in big cities. Urban residential differentiation lies in one of the most direct embodiments of the social division. Based on the investigation in recent three years, this paper takes the main city of Nanjing as the study area, and the urban demolition for reconstruction as a unique research perspective. Through Arc GIS, SPSS, and other means of data analysis methods, this paper analyzes in detail the giant database of the fundamental information of each demolition sites, and summarizes four characters of the demolition sites as follows： 1）the dimensions and intensity of the demolition sites differ from each other significantly; 2）the mode of demolition in the downtown appears as concentrated dots, while that in the north and south parts dominate by mass-acreage regions; 3） the intending usage of these sites differs according to their locations; 4）usage of the demolition regions highly correlates with their level and location. To deeply investigate the correlation between the urban demolition for reconstruction in the main city and the residential differentiation, some elementary conclusions are drawn from above. The paper holds that most of the buildings in the demolition are low in residential quality and there is little possibility that the aboriginal residents could move back due to the lower compensations from the demolition. Besides, the demolition sites and low-price economy housing complement each other in special distribution. Accordingly, the differentiation model of the main city of Nanjing is summarized. The article maintains that the currently living space of Nanjing City has been a diversification of the structure of the embryonic structure of living space ＂layers＂ and ＂fan＂ of the hybrid model, from a single center to the trend of multi-center.