基于大数据的山地城市活力评——以重庆主城区为例

明雨佳, 刘勇, 周佳松

Vitality assessment of mountainous cities based on multi-source data: A case of Chongqing Municipality, China

MING Yujia, LIU Yong, ZHOU Jiasong

图4 重庆主城区POI混合度分布

Figure 4 Spatial distribution of point of interest (POI) mix in Chongqing central city