We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Spatiotemporal variations and the ecological risks of microplastics in the watersheds of China: Implying the impacts of the COVID-19 pandemic
AI summary Read the abstract
A data mining and multivariate statistical analysis of 8,898 microplastic samples from 23 Chinese watersheds examined how the COVID-19 pandemic affected microplastic pollution levels and patterns in China, the world's largest microplastic emitter. The study found measurable shifts in microplastic abundance and composition linked to pandemic-era changes in production and waste management.
China is not only the first reported place of the COVID-19 pandemic but also is the biggest microplastic emitter in the world. Nevertheless, the impact of the COVID-19 pandemic on microplastic pollution in the watersheds of China remains poorly understood. To address this, the present study conducted a data mining and multivariate statistical analysis based on 8898 microplastic samples from 23 Chinese watershed systems before and during the COVID-19 pandemic. The results showed that the COVID-19 pandemic extensively affected the abundance, colors, shapes, polymer types, and particle sizes of microplastic in Chinese watershed systems. Before and during the COVID-19 pandemic, 77.27 % of the Chinese watershed systems observed increased microplastic abundance. Moreover, the COVID-19 pandemic itself, natural conditions (such as altitude and weather), and anthropogenic factors (such as civil aviation throughput) are highly intertwined, jointly impacting the microplastic in the watersheds of China. From the perspective of ecological risks, the COVID-19 pandemic was more likely to aggravate the microplastic pollution in the middle and down reaches of the Yangtze River Watersheds. Overall, whether before or during the COVID-19 pandemic, the main watershed systems of China still stayed at a high pollution level, which rang the alarm bell that watershed systems of China had been at serious ecological risk accused of microplastic contamination.
More Papers Like This
Microplastics in China’s surface water systems: Distribution, driving forces and ecological risk
AI summary Read the abstract
Researchers compiled over 14,000 samples from across China to map microplastic pollution in surface water systems using machine learning models. They found that microplastic abundance varied enormously across regions, driven by a complex mix of human activities and natural conditions. The ecological risk assessment revealed that watersheds in nearly all Chinese provinces face high to extremely high contamination levels, underscoring the urgency of nationwide management efforts.
Correcting microplastic pollution and risk assessment in Chinese watersheds
AI summary Read the abstract
Researchers compiled over 2,400 samples from 165 studies to create a national dataset of microplastic pollution across Chinese watersheds and developed a novel risk assessment framework. The study found that microplastic concentrations varied enormously across seven orders of magnitude, that population density and precipitation were key drivers of contamination, and that half of sampling sites fell into dangerous or extremely dangerous ecological risk categories.
Microplastic pollution in Chinese Rivers: A detailed analysis of distribution, risk factors, and ecological impact
AI summary Read the abstract
Researchers aggregated data from 2,474 microplastic samples across 165 publications to assess ecological risk in Chinese rivers, finding widespread contamination with average abundance varying substantially by watershed characteristics. A revised risk assessment accounting for particle morphology and polymer toxicity raised concern levels beyond previous estimates.
Impact of COVID-19 pandemic on microplastic occurrence in aquatic environments: A three-year study in Taihu Lake Basin, China
AI summary Read the abstract
Researchers tracked microplastic levels in the Taihu Lake Basin in China over three years spanning the COVID-19 pandemic. They found that microplastic concentrations initially dropped by 62% at the start of lockdowns but gradually returned to pre-pandemic levels, while the proportion of small fiber-type plastics linked to masks and protective equipment increased. The study illustrates how shifts in human behavior and product use can rapidly change the composition of microplastic pollution in waterways.
[Basin Distribution and Ecological Risk of Microplastics in Surface Water Bodies in China].
AI summary Read the abstract
A comprehensive analysis of data from China's ten major river basins (2014–2023) found microplastic contamination in rivers, lakes, reservoirs, and estuaries across the country, with microplastic abundance strongly correlating with population density and economic output. Polypropylene and polyethylene were the dominant polymers, and the Haihe River Basin near Beijing was classified as high ecological risk. The study also highlighted a major data gap: far less is known about microplastics in China's less-populated northwestern regions. These findings provide a national-scale picture of where microplastic pollution is most severe and what types of plastics are driving the ecological risk.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.