Details

Autor(en) / Beteiligte

• Sun, Zhibin
• Zhang, Hui
• Yang, Yifei
• Wan, Hua
• Wang, Yixiang

Titel

Impacts of geographic factors and population density on the COVID-19 spreading under the lockdown policies of China

Ist Teil von

• The Science of the total environment, 2020-12, Vol.746, p.141347-141347, Article 141347

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2020

Link zum Volltext

Quelle

ScienceDirect Journals (5 years ago - present)

Beschreibungen/Notizen

• The outbreak of COVID-19 pandemic has a high spreading rate and a high fatality rate. To control the rapid spreading of COVID-19 virus, Chinese government ordered lockdown policies since late January 2020. The aims of this study are to quantify the relationship between geographic information (i.e., latitude, longitude and altitude) and cumulative infected population, and to unveil the importance of the population density in the spreading speed during the lockdown. COVID-19 data during the period from December 8, 2019 to April 8, 2020 were collected before and after lockdown. After discovering two important geographic factors (i.e., latitude and altitude) by estimating the correlation coefficients between each of them and cumulative infected population, two linear models of cumulative infected population and COVID-19 spreading speed were constructed based on these two factors. Overall, our findings from the models showed a negative correlation between the provincial daily cumulative COVID-19 infected number and latitude/altitude. In addition, population density is not an important factor in COVID-19 spreading under strict lockdown policies. Our study suggests that lockdown policies of China can effectively restrict COVID-19 spreading speed. The first wave of COVID-19 outbreak of China under its lockdown policies lasted around 20 days. During this period, daily cumulative COVID-19 infected number and spreading speed were significantly negative correlated with latitude and altitude (a) but had no significant correlation with population density (b). [Display omitted] •The first wave of COVID-19 outbreak in China lasted around 20 days.•Negative correlations between cumulative COVID-19 infected number and latitude/altitude.•Population density cannot affect COVID-19 spreading under strict lockdown policies.•Lockdown policies of China effectively restrict COVID-19 spreading speed.