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微塑料和重金属复杂污染对土壤物理化学性质和微生物群落在交替湿和干燥条件下的影响

Xinghua Pang¹, Chao Chen¹, Jie Sun²

¹College of Environmental Sciences, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang District, Chengdu 611130, China; Key Lab of Agricultural Environment Engineering of Sichuan Provincial Education Department, No. 211 Huimin Road, Wenjiang District, Chengdu 611130, China.

Journal of hazardous materials

|July 15, 2023

概括

这项研究揭示了微塑料 (MP) 和重金属 (HM) 如何影响土壤. 交替湿和干燥 (AWD) 条件显著改变土壤酶活性和微生物群落,而不是干燥条件.

科学领域:

环境科学环境科学
土壤科学土壤科学
生态毒理学生态毒理学

背景情况:

微塑料 (MP) 和重金属 (HM) 是常见的土壤污染物.
聚钢 (PS) 是一种流行的MP类型,易受衰老的影响.
在交替浸湿和干燥 (AWD) 条件下,MP和HM对土壤的综合影响尚不清楚.

研究的目的:

调查传统和老年MP对土壤特性和微生物特性的影响.
为了比较这些在干燥 (干燥) 和AWD条件下的效应.
阐明在土壤中推动MP-HM相互作用的机制.

主要方法:

室内化实验使用0.2% (w/w) 的四种类型的MP.
在干燥和AWD条件下的土壤样本.
分析土壤的物理化学特性,酶活性和微生物功能.

主要成果:

在干燥的条件下,MP和HM显著影响了土壤的物理化学特性.
在AWD条件下,土壤酶活性受到更大的影响.
议员们改变了铜 (Cu) 和 (Cd) 的可用性,降低了Cu的4.27%,增加了Cd的8.55%.

结论:

MPs对土壤特性和微生物群落的影响在干燥和AWD条件之间存在显著差异.
在Dry下,MP主要通过物理化学变化 (72.4%的贡献) 影响微生物功能.
在AWD下,酶活性 (28.2%的增加) 和HM效应 (7.9%的增加) 变得更为占主导地位.

关键词:

交替浸湿和干燥可以进行.重金属是一种重金属.微生物社区的微生物社区.微生物的功能微生物的功能微塑料是一种微塑料.

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