The microplastics distribution characteristics and their impact on soil physicochemical properties and bacterial communities in food legumes farmland in northern China
文献类型： 外文期刊
作者： La Y.;Zhang L.;Zhao N.;Ye H.;Zeng Q.;Zhao L.;Wang Z.;Lin D.;Wang R.
作者机构：
关键词： Distribution characteristics;Food legumes farmland;Microplastic;Soil bacterial community
期刊名称： Journal of Hazardous Materials
ISSN： 0304-3894
年卷期： 2024 年 471 卷
页码：
收录情况： SCIE（2024版） ; ; EI（2024版）
摘要： Microplastics (MPs) pose a threat to farmland soil quality and crop safety. MPs exist widely in food legumes farmland soil due to the extensive use of agricultural film and organic fertilizer, but their distribution characteristics and their impact on soil environment have not been reported. The abundance and characteristics of MPs, soil physical and chemical properties, and bacterial community composition were investigated in 76 soil samples from five provinces in northern China. The results showed that the abundance of MPs ranged from 1600 to 36,200 items/kg. MPs in soil were mostly fibrous, less than 0.2 mm, and white. Rayon, polyester and polyethylene were the main types of MPs. The influences of MPs on soil physicochemical properties and bacterial communities mainly depended on the type of MPs. Notably, polyethylene significantly decreased the proportion of silt particles, and increased the nitrate nitrogen content as well as the abundance of MPs-degrading bacteria Paenibacillus (p < 0.05). Moreover, bacteria were more sensitive to polyesters in soil with low concentration of organic matter. This study indicated that MPs in food legumes farmland soil presented a higher-level. And, they partially altered soil physicochemical properties, and soil bacteria especially in soil with low organic matter. © 2024 Elsevier B.V.
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