Department of Agriculture and Biotechnology, Wenzhou Vocational College of Science and Technology, Wenzhou 325006, PR China.
Department of Agriculture and Biotechnology, Wenzhou Vocational College of Science and Technology, Wenzhou 325006, PR China; Wencheng Institution of Modern Agriculture and Health-Care Industry, Wenzhou 325300, PR China.
Sci Total Environ. 2022 Aug 1;832:154975. doi: 10.1016/j.scitotenv.2022.154975. Epub 2022 Apr 1.
Microplastics (MPs) are widespread anthropogenic pollutants that contaminate the terrestrial environment and serve as vectors of other contaminants. They trigger toxic effects during their migration and transmission, affecting the soil ecosystem and eventually presenting a serious threat to human health via the food chain. However, comprehensive studies on the distribution of MPs in soil and their correlation with human activities and terrestrial ecosystems are still lacking. In this study, we detected a significant difference in the MP size (both for the size <1 mm (P < 0.01) and the size 1-2 mm (P < 0.05)) in China and other countries based on bibliometric and meta-analysis. Principal component analysis revealed regional variations in MP distribution. The correlation analysis between MP characteristics and anthropogenic activities in China further revealed that industrial production was linked to polypropylene microplastics (PP-MPs) abundance (P < 0.01). We also discussed the interaction between soil MPs and ecosystems, such as soil microbial community, since the transportation of MPs was associated with its distribution and environmental factors in the soil. Linear regression analysis further showed that environmental variables, such as culture temperature, were negatively related to MPs' degradation efficiency by the fungi (P < 0.05). This study aims to evaluate the distribution, transfer, and impact of MPs, and their interaction with the soil ecosystem and provides information on the prevention and management of MP pollution in the terrestrial environment.
微塑料（MPs）是广泛存在的人为污染物，污染了陆地环境，并成为其他污染物的载体。它们在迁移和传播过程中引发毒性效应，影响土壤生态系统，并最终通过食物链对人类健康构成严重威胁。然而，关于 MPs 在土壤中的分布及其与人类活动和陆地生态系统的相关性的综合研究仍然缺乏。在本研究中，我们通过文献计量学和荟萃分析，发现中国和其他国家的 MPs 大小（<1mm（P<0.01）和 1-2mm（P<0.05））存在显著差异。主成分分析揭示了 MPs 分布的区域差异。中国 MPs 特征与人为活动的相关性分析进一步表明，工业生产与聚丙烯微塑料（PP-MPs）丰度有关（P<0.01）。我们还讨论了 MPs 与土壤生态系统之间的相互作用，例如土壤微生物群落，因为 MPs 的运输与其在土壤中的分布和环境因素有关。线性回归分析进一步表明，环境变量，如培养温度，与真菌对 MPs 的降解效率呈负相关（P<0.05）。本研究旨在评估 MPs 的分布、迁移和影响，以及它们与土壤生态系统的相互作用，并为陆地环境中 MPs 污染的预防和管理提供信息。
