中文摘要：

城市中心区是核心服务职能空间的聚集区,根据服务职能空间在中心区范围内的离散程度,可将城市聚集模式分为高度聚集、适度聚集和均匀聚集三种。研究利用洛伦兹离散曲线分析上海人民广场中心区职能空间分布问题,得知其在职能支网结构的进阶力、服务职能的市场竞争力和局部地段的聚集引力的驱动下,其服务功能区主要以围绕聚集的匀散发展模式、匀散间的共生发展模式和匀散条件下的聚集配套模式分布和发展。这一推导过程及其研究结果为中心区服务职能空间的规划提供了科学理论,从而推动了中心区的升级和转型。

英文摘要：

City center concentrates major service functions.On the basis of concentration degrees,they can be divided into high,appropriate,and even concentration models.The paper uses Lorenz Curve on the analysis of Shanghai People＇s Square functional distribution.It indicates that driven by connection power of the functional network,competitive power of service function and concentration power of partial area,the service area develops by even dispersion,symbiotic development,and concentration models.The result provides scientific theory for city center service area planning and promotes city center improvement.