中文摘要：

京津冀地区城市体系的优化完善对推进该地区一体化和城镇化进程意义重大。根据2006—2012年京津冀地区35个县级以上城市城区常住人口数据,发现该体系中不同规模等级城市数量结构呈＂类金字塔型＂分布特征,人口规模结构呈＂T型＂分布特征。首位度以及位序—规模分析结果显示,该体系中首位城市北京的优势较为明显,中小城市发育相对较弱,城市人口分布差异较大,并提出从推动北京的非首都功能疏解、促进高位次城市之间合作、培育中小城市等角度优化京津冀地区的城市体系。

英文摘要：

The optimization of Beijing-Tianjin-Hebei region＇s urban system is very significant to the integration and urbanization of the region. According to the data of permanent resident population living in more than 35 urban built-up area above the country level in Beijing-Tianjin-Hebei region from 2006 to 2012, the structure of numbers of cities on different scale is similar to pyramid,while the structure of population presents a ＂T＂ type distribution. On the basis of the analysis of law of the primate city and rank-size rule, Beijing has obvious advantage as the Primate City, while the development of medium-sized cities and small cities is slower than metropolises. And the distribution of city population differs greatly in this system. At last some advice is presented in order to optimize the urban system of Beijing-Tianjin-Hebei region.