COVID-19 lockdown improved river water quality in China.

ABSTRACT: The impacts of COVID-19 lockdowns on air quality around the world have received wide attention. In comparison, assessments of the implications for water quality are relatively rare. As the first country impacted by COVID-19, China implemented local and national lockdowns that shut down industries and businesses between January and May 2020. Based on monthly field measurements (N = 1693) and daily automonitoring (N = 65), this study analyzed the influence of the COVID-19 lockdown on river water quality in China. The results showed significant improvements in river water quality during the lockdown period but out-of-step improvements for different indicators. Reductions in ammonia nitrogen (NH₄⁺-N) began relatively soon after the lockdown; chemical oxygen demand (COD) a

SUBMITTER: Liu D 

PROVIDER: S-EPMC8526986 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature