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Fe oxides control the vulnerability of paddy soils to microplastic-induced carbon loss
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Dataset for: Fe oxides control the vulnerability of paddy soils to microplastic-induced carbon loss
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This study found that iron compounds in rice paddy soil help protect against carbon loss when tiny plastic particles (microplastics) are present. When these iron compounds are lacking, microplastics can cause more carbon to escape from the soil as CO2 gas. This matters because healthy soil carbon storage is important for growing nutritious food and fighting climate change, but microplastics from pollution could be disrupting this natural process.
Dataset for: Fe oxides control the vulnerability of paddy soils to microplastic-induced carbon loss
AI summary Read the abstract
This research found that iron compounds in rice paddy soil help protect against carbon loss when tiny plastic particles (microplastics) are present. When these iron compounds are low, microplastics cause more soil carbon to escape as CO2 gas, which could worsen climate change. This matters because microplastics are increasingly common in agricultural soils from plastic pollution, and healthy soils are crucial for growing food and storing carbon.
Impacts of microplastics on terrestrial soil carbon dynamics
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This synthesis shows that microplastics disrupt soil organic carbon sequestration through multiple mechanisms, including leaching dissolved organic matter, altering microbial carbon pump efficiency, and creating hotspots that modify mineral-organic matter interactions within soil aggregates. As microplastics accumulate in agricultural soils globally, their interference with carbon storage could undermine both climate mitigation efforts and the soil ecosystem services that support food production.
Degradable microplastics induce more soil organic carbon loss via priming effects: a viewpoint
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This viewpoint argues that degradable microplastics, despite being marketed as eco-friendly, may paradoxically accelerate soil organic carbon loss by triggering priming effects that stimulate microbial activity consuming native soil carbon stocks. This finding complicates assumptions about biodegradable plastics as a safe alternative, with implications for soil health, food security, and the long-term carbon cycle.
The Impacts of Microplastics on Sorption and Desorption Specifications of Iron in Soil
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Laboratory batch experiments showed that high-density polyethylene microplastics reduce iron adsorption in sandy loam soil while enhancing iron release, with the effect varying by microplastic dosage, particle size, and pH. Altered iron cycling in agricultural soils due to microplastic contamination could disrupt nutrient availability for crops and indirectly affect food quality and human nutrition.
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