中文摘要：

尽管第五次人口普查所反映的社会空间结构特征已经是12a前的事实，国内外学者也针对2000年的中国第五次人口普查数据做了一定的研究，但是，此类研究要么局限于全域性社会空间统计分析；要么限于县区、街道尺度展开的局域性地理空间分析研究。居委会（社区）这一核心统计尺度的普查数据一直没有被有效地挖掘利用。以南京旧城区为研究案例，首次通过匹配内城区居委会地图和第五次人口普查长短表数据，深度挖掘、揭示居委会尺度下的南京旧城区社会空间隔离特征，并指出：①新世纪南京市城市社会空间转型与分异是计划体制时期社会空间建构力量与市场分化力量混合的结果，相对于上海、北京和广卅l而言，南京城市制度性力量显示了强劲的路径依赖特征、学习性与适应性；②小尺度社会空间分析挖掘出大尺度无法辨析的学区中产阶层化（jiaoyufication）区域和转型期崛起的新城市精英社区。

英文摘要：

The fifth census is now over a decade old and much has changed in the socio-spatial characteristics of Chinese cities in that time. Moreover, many overseas scholars and Chinese researchers have published a substantial number of papers and books using the 2000 census data. However, most of scholars used the data in an aspatial way in sociologically oriented studies or use the data at the larger scale of town or jiedao level. Our study is based on data at the lowest geographic scale possible, the community level or juweihui. We use these data in combination with a carefully developed community level map. These data allow us to exam the socio-spatial structure of old city region of Nanjing. This area included 244 communities with a population of 1 358 714. The findings suggest a complex pattern formed by some of the well-known policies of the socialist era and the beginnings of free market processes, particularly in the creation of new elite areas within the old city. Particularly, Nanjing case shows that the complex pattern of urban social space in less developed cities would be consequence of stronger institutional path-dependence, adaptability and emulating capacity. Further more, the findings ofjiaoyufication and new urban elite rely on small scale data.