Agricultural films derived microplastics intensify acetochlor toxicity on soil health

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-09-14 DOI:10.1016/j.jhazmat.2025.139874

Zhaojiang Liu , Jiayang Hu , Yanjun Li , Yong Yu

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引用次数: 0

Abstract

Herbicide acetochlor (ACT) is widely used in agricultural production, but it remains unclear whether microplastics (MPs) from agricultural films exacerbate its harmful effects on soil health. Here, a microcosm cultivation experiment was conducted to investigate the impacts of PE (Polyethylene)-MPs and PBAT (polybutylene adipate terephthalate)-MPs with ACT (MPs/ACT) on soil health. Results showed that MPs/ACT treatment caused soil acidification, depletion of organic carbon and ammonium, altered enzyme activities, and influenced greenhouse gas emissions compared to ACT alone. MPs/ACT co-exposure also restructured microbial communities, reducing alpha diversity, increasing co-occurrence network complexity, enriching putative contaminant degraders, and enhancing the relative abundance of key nitrogen-cycling genes, enzymes, and carbon-cycling genes. Notably, PBAT/ACT stimulated nitrification-denitrification processes more than PE/ACT, indicating polymer-specific effects on soil nutrient cycling. Overall, MPs/ACT decreased soil health by 8.89 % - 14.63 %, greater than 8.39 % caused by ACT alone. These results demonstrate that MPs exacerbate the toxic effects of ACT on soil health. Mitigation strategies, such as reducing MP inputs, optimizing herbicide use, and incorporating biochar or microbial amendments, may help to restore soil health and maintain ecosystem stability. This study provides critical insights into the compounded impacts of MPs and herbicides on soil ecosystems.

查看原文本刊更多论文

农用薄膜衍生微塑料对土壤健康的乙草胺毒性增强

除草剂乙草胺（ACT）在农业生产中被广泛使用，但农用薄膜中的微塑料（MPs）是否具有可降解性尚不清楚。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.