We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Spatial Distribution and Compartmental Allocation of Microplastics in Belowground Systems of Mulched Phyllostachys violascens Forests Along Urban–Rural Gradients
Original title: Spatial Distribution and Compartmental Allocation of Microplastics in Belowground Systems of Mulched Phyllostachys violascens Forests Along Urban–Rural Gradients
AI summary Read the abstract
Scientists studied bamboo forests near cities and farther out in the countryside, looking at how tiny plastic bits (microplastics) build up in the soil and plant parts, including the bamboo shoots people eat. They found that plastic mulch covers used to help bamboo grow — especially when left on for a long time — cause more microplastics to accumulate underground, and that shoots grown near cities picked up more plastic than those farther away. While the edible shoots themselves didn't show alarming plastic buildup yet, the surrounding soil and roots did, suggesting this farming practice could pose a growing food safety risk worth monito
Intensive management practices promote microplastic (MP) accumulation in Phyllostachys violascens forests, posing potential threats to ecosystem stability and the edibility safety of bamboo shoots. However, how urbanization and mulching duration jointly regulate MP distribution, transfer, and associated food safety risks remains unclear. We investigated MP dynamics across urban–rural gradients (suburban vs. exurban) under different mulching durations (no mulching, short–term mulching, and long–term mulching), focusing on the rhizome–root–soil system and bamboo shoots. MP abundance was significantly higher in suburban forests, with maxima under long–term mulching, whereas in exurban forests, peaks occurred under long–term mulching. Urbanization also altered MP allocation patterns, with enrichment in rhizome roots and rhizomes in suburban forests but greater accumulation in bamboo shoots in exurban forests. Long–term mulching markedly enhanced MP accumulation across all components, particularly in clump roots, where abundance was three times higher than that in exurban forests. MPs were predominantly small (20–50 μm), mainly composed of acrylates (ACRs), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyurethane (PU), and polyethylene (PE). Along the “soil–root–rhizome” continuum, contrasting transfer patterns emerged between suburban and exurban forests, with soil total potassium identified as the key driver regulating MP migration and redistribution. Although the pollution load index indicated moderate contamination without significant accumulation in bamboo shoots, the ecological risk index revealed a high ecological risk, highlighting potential food safety concerns. Overall, MP accumulation and migration in Ph. violascens systems are jointly shaped by urban–rural gradients and mulching duration, with implications for belowground processes and the safety of edible bamboo shoots.
More Papers Like This
Spatio‐Temporal Variation of Soil Microplastics as Emerging Contamination After Application of Organic Mulching in Phyllostachys violascens Forests
AI summary Read the abstract
Researchers investigated microplastic contamination in Phyllostachys violascens bamboo forest soils under different urban proximity conditions and mulching durations, analysing MP abundance, morphology, and polymer composition across three soil depths and assessing ecological risk. They found MP abundance varied significantly with urban proximity and mulching duration, with vertical distribution showing an initial increase followed by decline with depth, and ecological risk indices indicating moderate-to-high concern in mulched stands.
The distribution and characteristics of soil microplastics pollution: Evidences from different land use
AI summary Read the abstract
Scientists tested soil from farmland, tree plantations, roadside greenery, and forests in a mountainous region of China, finding that plantations and roadside soil had far more tiny plastic bits than natural forest soil, likely from plastic mulch, fertilizers, and traffic pollution. Since these microplastics can work their way into crops, groundwater, and eventually our food and water supply, understanding where they build up most helps identify where cleanup and prevention efforts (like reducing plastic mulch use) would make the biggest difference for both soil health and human exposure.
Impact of plastic mulching on microplastic contamination in mountainous agricultural soils
AI summary Read the abstract
Researchers examined how plastic mulching films affect microplastic contamination in remote mountainous agricultural soils in Kakani, Nepal, collecting soil samples from two depths across mulched farms, non-mulched farms, and adjacent forests and finding elevated MP concentrations in mulched plots.
Impact of plastic mulching on microplastic contamination in mountainous agricultural soils
AI summary Read the abstract
Researchers examined how plastic mulching films affect microplastic contamination in remote mountainous agricultural soils in Kakani, Nepal, collecting soil samples from two depths across mulched farms, non-mulched farms, and adjacent forests and finding elevated MP concentrations in mulched plots.
Soil Microplastic Pollution Across Terrestrial Ecosystems: A Review of Sources, Distribution Patterns, Polymer Types and Environmental Implications
AI summary Read the abstract
Tiny plastic bits from things like farm mulch, car tires, and trash are building up in soil everywhere—farms, cities, and even forests—and the smallest pieces can sink deep into the ground where they're more likely to be taken up by plants and soil organisms. This matters for us because these plastics can enter the food we grow, and this review (a summary of many existing studies) shows scientists still don't fully understand the long-term health and environmental risks, meaning better plastic recycling and management are urgently needed.
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.