COVID-19病例与城市人口规模的标度律及其时间演化

许刚, 焦利民, 李新虎, 肖逸雄, 宫鹏, 龚健雅

Scaling law of COVID-19 cases and city size and its evolution over time

XU Gang, JIAO Limin, LI Xinhu, XIAO Yixiong, GONG Peng, GONG Jianya

图6 美国州内各县COVID-19累计确诊和死亡病例与人口规模标度指数的时间变化

Fig. 6 Daily variations of scaling exponents between COVID-19 cases or deaths and the population of counties in each state of the United States