基于出租车客流的特大城市多中心空间结构的识别--以苏州市为例

Identification of multiple center of megalopolis based on taxi passenger flow:taking Suzhou City as an example

目前,对城市多中心的认知主要是将其理解为功能集聚的"点",而特大城市的空间尺度较大,功能集聚点无法描述出其结构性特征。本文假设特大城市的多中心具备"独立成市"的特征,即多个中心可分别为相应的城市次区域提供完备的中心职能,中心内部由复合功能片区集聚成为"中心区域"。基于上述假设,设立了判别多中心的3个条件,并运用出租车客流对苏州市区进行实证分析,得出了苏州城区范围内存在4个中心区域的结论。这4个中心区域具有紧密联系,并承担着其腹地的中心职能。未来,苏州应基于该4个中心区域合理安排城市的布局和功能。

Because of the large scale of the megalopolis,the structural characteristic cannot be described by single function accumulation point.Assuming that each center of megalopolis could be an independent center of sub region of the city,namely it provides relatively complete fuctions for its hinterlands,and contains different components which connect tighly with each other.On this basis of hypothesis,this essay establishes three principles to distinguish the multiple center structure of Suzhou City,and finds out that the center structure of Suzhou City is polycentric and has four centeral districts.The four districts have tight relations and take the function of hinderland.In the future,Suzhou should reasonably arrange the cities' distribution and functions based on the four central districts.