基于“点—轴系统”理论的城市群边界识别
高晓路, 许泽宁, 牛方曲

Delineating the scope of urban agglomerations based upon the Pole-Axis theory
Xiaolu GAO, Zening XU, Fangqu NIU
图5 京津冀城市群的边界范围的界定
Fig.5 The scope of urban agglomeration in the Beijing-Tianjin-Hebei Region