聚烯,聚乙烯和聚烯微塑料对土壤-树球-植物系统的影响:植物毒性,酶活性和微生物社区
Yuhang Lian1, Ruiying Shi1, Jinzheng Liu1
1MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Engineering Research Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
Journal of hazardous materials
|January 6, 2024
概括
土壤微塑料 (MP) 损害了生菜的生长,改变了土壤酶和微生物群落. 不同的塑料类型和度对土壤-树球-植物系统产生重大影响,突出显示了环境风险.
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:
- 土壤微塑料 (MP) 是一个普遍的全球环境问题.
- 有限的研究存在于各种MP属性对生态系统的影响差异.
研究的目的:
- 研究常见的微塑料聚合物 (聚乙烯,聚乙烯,聚乙烯) 在不同度下对生菜生长,土壤健康和微生物群落的影响.
- 了解微塑料特性对土壤-树球-植物连续体的影响.
主要方法:
- 豆 (Lactuca sativa L.) 暴露在聚钢,聚乙烯和聚烯微塑料中,其度为0.01%和0.1%w/w.
- 评估了生菜生长参数,抗氧化剂系统,新陈代谢,植物圈微生物群,土壤酶活动 (植物酶,脱酶) 和树脂圈微生物群体结构.
- 利用部分最小平方路径建模 (PLS-PMs) 来分析系统范围的影响.
主要成果:
- 微塑料暴露抑制了生菜的生长,扰乱了它的抗氧化系统,新陈代谢和植物圈微生物群.
- 在微塑料处理下,植物酶活性下降,而脱酶活性增加.
- 树叶球微生物群落的多样性和结构受到干扰,聚烯和聚烯微塑料表现出更大的敏感性.
结论:
- 微塑料显著影响土壤 - 树球 - 植物系统,影响植物健康和土壤微生物生态.
- 这些发现强调了需要综合性风险评估,考虑到各种微塑料的特性.
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