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Urban Resilience of Large Public Health Events Based on NPP-VIIRS Nighttime Light Images: A Case Study of 35 Large Cities in China

Author

Listed:
  • Rui Liu

    (School of Geomatics and Urban Spatial Information, Beijing University of Civil Engineering and Architecture, Beijing 102616, China
    These authors contributed equally to this work.)

  • Xin Li

    (School of Architecture and Urban Planning, Beijing University of Civil Engineering and Architecture, Exhibition Hall Road, Xicheng District, Beijing 100044, China
    These authors contributed equally to this work.)

  • Zizhe Zhang

    (GanSu CSCEC Municipal Engineering Investigation and Design Institute Co., Ltd., Lanzhou 730000, China)

Abstract

The COVID-19 outbreak directly and severely threatens global public health. Non-drug interventions in response to the COVID-19 pandemic have significantly altered urban socioeconomic activity. Understanding the different levels of city resilience to the impact of COVID-19 on urban human activities is essential. In this paper, 35 large cities in China were selected as research areas, and based on NPP-VIIRS night light images, the spatial pattern changes in human activities during the epidemic period from the end of December 2019 to December 2022 were explored. The results are as follows: (1) In the first two months of the epidemic, the luminous value of large cities showed an extensive range of decline, and the decline in different urban functional places was different. (2) There is a significant positive correlation between the urban population and the luminous change value. The closer the relationship between urban places and human activities, the stronger the correlation between the population and the luminous change value of urban places. (3) In the middle and later stages of the epidemic, the night light value of all cities showed an upward trend, but there was a difference. (4) The increase in the number of confirmed cases in the middle and later stages of the epidemic could hardly lead to a significant decrease in the value of night light on a monthly scale unless the city had a relatively large area and a relatively strict lockdown policy in that month. This study will help inform future strategies and decisions to effectively combat epidemics and the construction of resilient cities.

Suggested Citation

  • Rui Liu & Xin Li & Zizhe Zhang, 2024. "Urban Resilience of Large Public Health Events Based on NPP-VIIRS Nighttime Light Images: A Case Study of 35 Large Cities in China," Sustainability, MDPI, vol. 16(17), pages 1-15, August.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:17:p:7483-:d:1466942
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    References listed on IDEAS

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    1. Liu, Jin & Tian, Jiayu & Lyu, Wenjing & Yu, Yitian, 2022. "The impact of COVID-19 on reducing carbon emissions: From the angle of international student mobility," Applied Energy, Elsevier, vol. 317(C).
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