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Soil carbon cycling mediated by microplastics: Formation, mineralization, and sequestration
Summary
This review examines how microplastic pollution affects soil organic carbon cycling, covering direct participation in carbon processes and indirect effects on soil physicochemical properties and microbial communities. The authors synthesize mechanisms by which microplastics influence organic carbon formation, mineralization, and sequestration in terrestrial ecosystems.
微塑料污染已成为全球生态系统最严重的威胁之一，其不仅对陆地和海洋生态系统、生物多样性和人体健康产生影响，还会通过影响土壤有机碳固定扰动全球气候。土壤中微塑料可以直接参与碳循环或间接影响理化性质和微生物群落来影响土壤有机碳周转过程。本文从微塑料影响土壤有机碳测定，以及微塑料介导的有机碳形成过程、矿化和稳定过程等方面，阐明了微塑料对土壤有机碳库的影响，并深入探讨了微塑料调控土壤有机碳循环的可能机制。未来需从微塑料源碳的精准识别、碳过程关键微生物作用机制、多因素影响下碳循环过程等方面开展进一步的研究工作。