中文摘要：

一般认为中国首都圈的空间结构是京、津双核心。本文基于首都圈地区第二次经济普查中分县市区18个行业就业人口数据,运用区域密度函数,对首都圈地区分行业就业人口分布与空间结构特征进行分析,探讨不同行业的区域空间结构。研究发现：首都圈并不是单纯的京、津双核结构,而是在不同行业上存在不同的结构特征。总体上,首都圈的确呈现京、津双核结构,就业人口集中在京、津、唐三地,尤以京、津为主。而分行业来看,大部分服务业,尤其是生产者服务业则呈现以北京为中心的单中心结构特征;而消费者服务业则大多呈现京、津双核结构;制造业、建筑业等第二产业呈现出京、津、唐三中心结构;而卫生社会保障和社会福利业、公共管理和社会组织等行业显示出以京、津、唐、保为中心的多中心结构。进而得出中国首都圈呈现以北京为中心,京、津双核明显,京津唐三足鼎立,京津唐保功能分异,秦皇岛、承德、张家口、沧州、廊坊共同发展的多中心空间格局。

英文摘要：

The Capital Metropolitan Region of China includes Beijing,Tianjin,and seven cities of Hebei Province.It has been generally considered that the Capital Metropolitan Region of China is characterized by a ＂Dual-Core＂ spatial structure,with Beijing and Tianjin as the center cities.Based on the data of Second Economic Census in industrial employment,we analyze the employment of 18 sectors in the Capital Metropolitan Region in 2008.In order to reexamine the features of such a structure,we use the regional density function in this paper,which is generally applied to the structure analysis in the urban study.The results show that although the spatial structure of the region does show a ＂Beijing-Tianjin＂ dual-core feature on the whole,it varies in different sectors.The employed population is concentrated in Beijing,Tianjin,Tangshan and Baoding,especially in Beijing and Tianjin.Beijing is the regional center of service sectors,especially in producer services.As for consumer services,there are two regional centers,with Beijing as the main center and Tianjin as the sub-center.In the sector of public services such as sanitation,social security and welfare,public management and social organization,there is a multiple-center structure with Beijing,Tianjin,Tangshan and Baoding as the main centers.As for the secondary industry,besides Beijing and Tianjin,Tangshan presents a third regional center due to its significance in the employed population in manufacturing and building industries.The whole region comprises two hierarchies,central area and peripheral area.The central area,including Beijing,Tianjin,Tangshan,Baoding and Langfang,with a large employed population,performs most functions in each sector;while Qinhuangdao,Chengde,Zhangjiakou and Cangzhou,as the peripheral area,constitute the sub-economic area of the region.In summary,the study shows that the spatial structure of the Capital Metropolitan Region in China is a polycentric structure with the core-periphery pattern.