城市夜间灯光强度空间衰减规律及应用
郑沐辰, 许刚, 肖锐, 焦利民

Distance decay of nighttime lights from urban centers and its application
ZHENG Muchen, XU Gang, XIAO Rui, JIAO Limin
图6 2012年与2020年各城市半径对比
Fig.6 Comparison of the radius of the sample cities in 2012 and 2020