Urban neighborhoods in Barcelona and Madrid are currently experiencing intense social transformations, with exclusive (and excluding) areas expanding (more or less rapidly) in resurgent central spaces. Recent literature suggests that, in parallel with urban expansion and latent re-urbanization, the most vulnerable population segments are being displaced and concentrated in suburban areas with worse access to all types of services. By proposing a comprehensive analysis of annual data on migration and residential mobility based on municipal population registers, the present study outlines the role of an increasing participation of highly qualified individuals in migratory and residential flows to explain changes in social composition at the intra-urban spatial scale. For the first time in Spain, we have been able to consider the impact of an individual variable assessing ‘education level’ on migration and residential mobility patterns, allowing a better characterization of interconnected processes of population substitution, polarization and segregation.

巴塞罗那和马德里的城市社区目前正经历着剧烈的社会变革，专属（且不包括）区域在复兴的中央空间中（或多或少迅速地）扩展。最新文献表明，与城市扩张和潜在的重新城市化同时，最脆弱的人口群体正在流离失所，集中在郊区，无法获得所有类型的服务。通过对基于市政人口登记的移民和居民流动的年度数据进行全面分析，本研究概述了高素质个人越来越多地参与移民和居住流动的作用，以解释城市内部空间的社会构成变化规模。在西班牙，这是第一次