区域内部可达性的增强使得对区域系统的研究从方法上更强调流动视角下的网络模型应用，内容上则集中在地域组织结构演化的探讨。缺少连续、稳定的观测数据是长期以来研究的瓶颈所在。社交网络位置数据作为网络技术发展下的一类新型数据源，它为实现区域流动空间的观测创造了机会。通过采集社交网络上的位置数据来模拟区域内的人流情况，构造了以城市节点和人流构成的区域流动空间模型，并对其结构特征展开了实证分析。分析表明，长三角地区流动空间具有流动强度层级结构明显、城市牵引力规模依赖、空间形态的多中心、行政区划限制区域流动等特征，这些特征表明尽管局部上表现出了网络特征，但是在区域尺度上，长三角地区的区域流动空间仍然受中心地范式的主导。%As the development of regional flexibility, the network model used in regional study becomes more frequent and the study focuses more on the discussion of regional organization pattern. Lacking of valid data has always been the restriction, which is recently shed on light by the development of the technology. Using the Location data from social network, this paper simulates the population flows between cities in Yangtze River Delta. The result shows that the space of flow there resembles the characteristics of hierarchy structure, population scale relying, central city domain and the restriction of the administration district, indicating that in spite of some network characteristics in parts of the region,mono-center pattern is still the domain mechanism in the space of flow in Yangtze River Delta.
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