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可生物降解微塑料对土壤微生物群落和活动的影响:从生态中等宇宙实验的洞察力

Shin Woong Kim¹, Klára Šmídová², Sam van Loon³

¹Institute of Biology, Freie Universität Berlin, 14195 Berlin, Germany; Berlin-Brandenburg Institute of Advanced Biodiversity Research, 14195 Berlin, Germany; Center for Ecotoxicology and Environmental Future Research, Korea Institute of Toxicology, 17 Jegok-gil, Jinju 52834, Republic of Korea.

The Science of the total environment

|April 1, 2025

概括

可生物降解的微塑料 (MPs) 增加了土壤微生物多样性和呼吸能力. 这项研究表明,粉聚乙烯基基甲基甲基甲基 MPs 改变土壤细菌和真菌群落,即使在现实的度.

科学领域:

环境科学环境科学
土壤科学土壤科学
微生物学微生物学

背景情况:

微塑料 (MP) 污染在全球范围内不断增加,影响土壤生态系统.
可生物降解的MPs对土壤微生物群落的影响尚不清楚.
粉聚乙烯基酸甲酸MPs (PBAT-BD-MPs) 越来越多地使用,但它们对土壤的影响需要调查.

研究的目的:

研究土壤微生物群落对PBAT-BD-MPs的剂量依赖反应.
评估可生物降解的MPs对土壤中的细菌和真菌多样性和丰度的影响.
为了评估MP添加后土壤呼吸的变化.

主要方法:

对PBAT-BD-MPs (0-0.8% w/w) 的不同度进行控制的中宇宙实验.
在实验设置中包括土壤微生物,地,春尾和植物.
细菌和真菌的amplicon测序,以分析微生物社区的结构和多样性.
测量土壤呼吸速率.

主要成果:

细菌和真菌群体的α多样性随着PBAT-BD-MP度的增加而显著增加.
细菌丰富度在最高的MP度 (0.8%) 达到顶峰,其中浮游生物的数量增加,菌类的数量减少.
菌类丰富性也显著增加,阿斯科米科塔和莫蒂埃洛米科塔的显著增加.
土壤呼吸与增加PBAT-BD-MP度的同时增加.

结论:

可生物降解的微塑料 (PBAT-BD-MPs) 显著改变了土壤的细菌和真菌群落.
增加的MP度导致更高的微生物多样性和土壤呼吸.
这些发现强调了可生物降解的MPs在陆地环境中的生态影响.

关键词:

细菌细菌是一种细菌.气候变化气候变化气候变化菌的真菌是一种.聚乙烯基酸甲基甲基甲酸 PBAT 土壤呼吸系统土壤呼吸系统

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