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微塑料和对土壤植物系统的联合影响:植物毒性,Cd积累和微生物活动

Beibei Wang¹, Peiheng Wang¹, Shibo Zhao¹

¹College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, China.

Environmental pollution (Barking, Essex : 1987)

|June 4, 2023

概括

微塑料 (MP) 和 (Cd) 在土壤中相互作用,影响植物生长和微生物活动. 可生物降解的MPs改变了土壤的pH值,减少了Brassica juncea的Cd吸收,并影响了土壤的碳代谢.

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) 是新兴的土壤污染物,通常与 (Cd) 等重金属一起发现.
对于MP和Cd对土壤植物系统的综合影响的了解有限.

研究的目的:

调查不同MP和土壤Cd对Brassica juncea生长的综合影响.
评估Cd的吸收,土壤微生物的碳代谢,并在同时暴露条件下评估土壤的物理化学特性.

主要方法:

一个为期50天的实验,使用Brassica juncea暴露在老化聚乙烯 (PE),老化聚烯 (PP),可生物降解的聚乙烯基甲基甲酸盐 (PBAT) 和具有土壤Cd污染的聚乳酸 (PLA) MPs中.
测量包括植物生长参数,叶绿素含量,植物和土壤中的Cd度,土壤pH值和微生物活动 (平均井色发育 - AWCD).

主要成果:

观察到PE,PP,PBAT和PLAMP的植物毒性,减少叶绿素和生长生物质.
可生物降解的PBAT和PLAMP显著增加了土壤的pH值,从而减少了DTPA可提取的Cd和植物Cd的积累.
MPs降低了土壤微生物代谢活性 (AWCD),特定的生物降解MPs改变了微生物对不同碳化合物的利用.

结论:

对MPs和Cd的同时暴露会改变土壤的pH值,影响Cd的生物可用性,植物积累和生长.
可生物降解的MP,特别是PBAT和PLA,显示出降低Brassica junceaCd吸收的潜力.
国会议员影响土壤微生物的碳代谢,突出了受污染的土壤生态系统中的复杂相互作用.

关键词:

积累积累是一种积累.碳代谢活动碳代谢活动.Cd Cd Cd Cd 在线播放微塑料是一种微塑料.植物毒性植物毒性

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