基于多源数据的城市功能区精细化研究——以北京为例

杨振山, 苏锦华, 杨航, 赵永宏

ng urban functional areas based on multi-source data: A case study of Beijing

YANG Zhenshan, SU Jinhua, YANG Hang, ZHAO Yonghong

图4 北京城区昼夜人口密度对比图

Fig. 4 Contrast of population density in between day and night