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聚乙烯微塑料和重金属对土壤植物微生物动态的影响

Yi Li¹, Xinwei Shi², Peiqing Qin²

¹Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, China; College of Environment and Resources, Guangxi Normal University, Guilin, China; Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions, Guangxi Normal University, Guilin, China.

Environmental pollution (Barking, Essex : 1987)

|November 24, 2023

概括

聚乙烯微塑料会影响重金属污染地区的土壤健康. 它们会改变植物生长,土壤酶和微生物网络,影响营养循环和土壤功能.

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:

聚乙烯 (PE) 微塑料是普遍存在的环境污染物.
它们对土壤和植物相互作用的影响,特别是在重金属 (HM) 污染的土壤中,是鲜为人知的.
了解这些相互作用对于评估生态风险至关重要.

研究的目的:

研究PE微塑料对土壤酶活动,微生物相互作用和HM污染土壤中营养循环的影响.
通过生态网络和功能基因视角来分析这些影响.
阐明PE作为这些环境中潜在的碳源的作用.

主要方法:

分析土壤酶活动 (碳,,).
使用生态网络分析 (细菌和真菌网络) 评估微生物社区的相互作用.
结构方程建模的应用,以确定影响营养循环的因素.

主要成果:

添加PE微塑料减少了Bidens pilosa L. L. 的生物质.
观察到碳,和酶活动的部分增加.
细菌生态网络的缓冲能力大于共同污染的土壤中的真菌网络.
颗粒大小,剂量,土壤水分,pH值和营养素显著影响了营养循环.

结论:

聚烯微塑料可以改变HM污染土壤中的土壤生态功能和营养循环.
PE可能充当影响微生物功能的碳来源.
土壤微生物网络具有弹性,但营养循环对多种环境因素敏感.

关键词:

生态网络生态网络重金属是一种重金属.营养素循环的循环.聚乙烯微塑料中的聚乙烯微塑料

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