中文摘要：

中国城市服务业职能特征研究可为构建合理的城市服务业职能规模结构、行业结构和空间结构及各城市服务业差异化发展提供科学依据。以中国287个地级及以上城市为单元,应用纳尔逊方法、城市服务业流量测度模型、服务业行业B/N比和空间自相关等方法,定量测算各城市服务业职能规模、专业化部门、职能强度,分析各服务业行业的分工水平、演变趋势和空间格局。研究表明：1对外服务业输出流量高度集中于高级服务业中心,各等级服务业中心的服务业职能结构差异较大;2城市服务业输出和输入流量规模在地带性尺度上都呈＂东中西＂三级递减空间格局。城市服务业输出流量空间没有显著集聚区域,而城市服务业输入流量空间上有弱集聚特征,呈＂大分散小集中＂格局,集聚城市呈＂群＂状分布,与重要城市群分布较一致;3各服务业行业分工强度存在差异,服务业整体分工在深化,具体行业分工有快速深化、缓慢深化、稳定三种类型;4服务业输入流量规模集中性比较低,各城市有普遍服务业需求,应根据需求类型采取不同发展策略。

英文摘要：

A study of the functional features of China＇s urban service industries can provide scientific support for the development of the urban service sector to an appropriate scale,industrial make- up and spatial structure, and for exploring different routes for development from city to city. Based on a survey of 287 cities at prefecture level and above in China, this paper uses Nelson methods, flow measurement models, B/N ratio and spatial autocorrelation to conduct quantitative research on the functional scale, specialized units and functional strength of urban service industries in various cities in China. It presents an analysis of the level of labor division, development trends and spatial patterns of different service industries. The research demonstrates that China＇s exported services are highly concentrated in high-end service centers,and that the functional structures of service centers at various levels differ sharply.Geographically, both the import and export of urban services progressively diminish in scale from eastern to central and western China. Sources of exported urban services show no tendency to concentrate in a certain area, but the import of urban services displays a slight concentration in space, where cities are clustered in the same way as major urban agglomerations of China. In different service industries, the levels of labor divisions vary, but are deepening overall. Finally, it was found that imported service industries are of relatively low concentration, and because all cities demand the development of service industries, it is asserted that tailored development strategies should be taken in individual cities.