论大城市“多中心”空间结构的“空间绩效”机理——基于厦门LBS画像数据和常规普查数据的研究

以厦门为研究案例,采用LBS画像大数据和人口与经济普查、居民出行调查等传统普查结合的分析方法,通过职住静态分布和动态关联分析来认识厦门“岛内-岛外”的空间结构和运转特征,测度其“多中心”空间结构的“空间绩效”并解释其成因机理.研究提出,大城市为应对“大城市病”而实施“多中心”战略,不仅需要在外围地区规划建设足够规模的新城或新城区,使城市在空间形态上实现“多中心”,更需要维持组团之间合理的关联强度——如果外围组团的内循环比例提升,则“多中心”结构的“空间绩效”可望提升;而若跨区及向心的通勤比例很高,且以个体机动方式为主导,则原本良好的组团结构也会被瓦解.

Polycentric Mage-City and its Mechanism of Spatial Performance: Findings from Xiamen Based on LBS and Census Data

By adopting a progressive perspective of "urban form-element connectivity-socioeconomic mechanism",this paper measures the job-housing spatial structure of Xiamen city.The results show that Xiamen has highly mixed spatial characters with a monocentric job center on the island and polycentric job cluster on the bay area of the mainland.This research also examines the intrinsic spatial mechanism of daily traffic congestion in Xiamen.It is hoped that this research will provide insight into the very nature of urban form and its organizational logic behind.