基于百度慧眼的中国收缩城市分类研究
孟祥凤, 马爽, 项雯怡, 阚长城, 吴康, 龙瀛

Classification of shrinking cities in China using Baidu big data
MENG Xiangfeng, MA Shuang, XIANG Wenyi, KAN Changcheng, WU Kang, LONG Ying
图3 2016—2018年不同常住人口减少比率的网格数量分组统计
Fig. 3 Grouping statistics of the number of grids with different reduction ratios of permanent population from 2016 to 2018