京津冀城市用地形态的双分形特征及其演化
赵静湉, 陈彦光, 李双成

Bi-fractal structure and evolution of the Beijing-Tianjin-Hebei region urban land-use patterns
Jingtian ZHAO, Yanguang CHEN, Shuangcheng LI
图1 全区域盒子维数计算的研究区范围
Fig.1 The study area of the Beijing-Tianjin-Hebei systems