TY - PROGRESS IN GEOGRAPHY A1 - ZHAO Ziyu, ZHAO Shiyao, HAN Zhonghui, XU Yunxiao, JIN Jie, WANG Shijun T1 - Impact of the COVID-19 pandemic on population heat map in leisure areas in Beijing on holidays Y1 - 2021-09-28 00:00:00.0 JF - PROGRESS IN GEOGRAPHY JO - PROGRESS IN GEOGRAPHY SP - 1073 EP - 1085 VL - 40 IS - 7 UR - {https://www.progressingeography.com/EN/10.18306/dlkxjz.2021.07.001} N1 - 10.18306/dlkxjz.2021.07.001 ER -