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Papers
10 resultsShowing papers from State Administration of Cultural Heritage
ClearAluminum and microplastic release from reflective agricultural films disrupt microbial communities and functions in soil
Scientists found that reflective aluminum-coated agricultural films degrade in soil over time, releasing both aluminum and microplastics that disrupt soil chemistry and microbial communities important for nutrient cycling. This matters for food safety because these changes to soil health could affect crop quality and potentially introduce microplastics into the food supply.
In-field degradation of polybutylene adipate-co-terephthalate (PBAT) films, microplastic formation, and impacts on soil health
A three-year field study found that biodegradable PBAT mulch films actually produced more microplastic particles in soil than conventional polyethylene films, though the biodegradable versions improved soil health and crop yields overall. The majority of microplastics from biodegradable films were very small (under 0.25 mm), which raises questions about whether these tiny fragments pose different risks than larger pieces.
Enhancing soil gross nitrogen transformation through regulation of microbial nitrogen-cycling genes by biodegradable microplastics
This study found that biodegradable microplastics from agricultural plastic film boosted nitrogen cycling in soil by increasing the activity of microbes involved in nitrogen processing. While this might seem beneficial for crop growth, the accelerated nitrogen transformation could also increase nitrous oxide emissions (a potent greenhouse gas) and lead to nitrogen runoff that pollutes waterways.
Impact of long-term conventional and biodegradable film mulching on microplastic abundance, soil structure and organic carbon in a cotton field
Researchers compared microplastic levels in cotton fields after 23 years of plastic film mulching and found that switching to biodegradable film actually produced more total microplastics than continuing with conventional polyethylene film. The biodegradable film broke down into many small particles that also reduced beneficial soil microbes and dissolved organic carbon. This challenges the idea that biodegradable agricultural films are a simple solution to farmland plastic pollution.
The agricultural plastic paradox: Feeding more, harming more?
This review examines the trade-off between the agricultural benefits of plastic film mulch, which helps feed an estimated 85 million additional people in China alone, and the growing microplastic contamination it causes in farmland soils. Researchers found that current studies on the effects of mulch-derived microplastics use inconsistent methods and often unrealistically high concentrations, making it difficult to assess the true risks. The study calls for standardized research approaches to better understand whether the agricultural benefits of plastic mulch outweigh its environmental costs.
Phytoplankton Communities’ Response to Thermal Stratification and Changing Environmental Conditions in a Deep-Water Reservoir: Stochastic and Deterministic Processes
Researchers studied how thermal stratification in a deep-water reservoir affects phytoplankton community structure and the processes governing species assembly. The study found that both deterministic factors like environmental filtering and stochastic processes influence phytoplankton distribution across water layers. Evidence indicates that prolonged thermal stratification driven by global warming is reshaping aquatic microbial communities in ways that could affect water quality.
Biodegradable Film Mulching Increases Soil Carbon Sequestration and Microbial Network Complexity in a Long-Term Field Study
Scientists studied biodegradable plastic mulch (the plastic sheeting farmers use to cover soil) and found it helps soil store more carbon and support healthier microbial communities compared to regular plastic mulch. However, the biodegradable plastic still breaks down into microplastics in the soil, raising questions about long-term environmental effects. This matters because while biodegradable farm plastics may help fight climate change by storing carbon, we still need to understand how the microplastics they leave behind might affect our food system.
Material and Technique Analysis of Qing Dynasty Official Style Architectural Polychrome Paintings in Hangzhou, Zhejiang, China
Material and technique analysis of Qing Dynasty polychrome paintings in Hangzhou revealed how the city's southern climate and imperial northern aesthetic influenced the composition and preservation challenges of architectural polychrome art in this historically significant region.
Effect of biodegradable films on microplastic distribution and microbial community composition in paddy soil
Researchers examined microplastic distribution and microbial community composition in paddy soils from southern China where biodegradable plastic films had been used, analyzing MP composition via FTIR and assessing how microbial communities drive biodegradation of both conventional and biodegradable plastic residues.
Study on aging behavior of polyethylene glycol under three wavelengths of ultraviolet light irradiation
This study investigated how UV irradiation at different wavelengths causes photo-aging and degradation of polyethylene glycol (PEG2000), a material used to conserve waterlogged wooden cultural artifacts. Understanding how UV breaks down polymer materials is relevant to modeling how plastics in the environment fragment into microplastics under sunlight.