Key Laboratory of Plant-Soil Interactions of Ministry of Education, Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China; National Observation and Research Station of Agriculture Green Development (Quzhou, Hebei), China Agricultural University, Beijing, 100193, China.
Key Laboratory of Plant-Soil Interactions of Ministry of Education, Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China; National Observation and Research Station of Agriculture Green Development (Quzhou, Hebei), China Agricultural University, Beijing, 100193, China; School of Natural Sciences, Bangor University, Bangor, LL57 2DG, UK.
J Hazard Mater. 2022 Aug 5;435:129065. doi: 10.1016/j.jhazmat.2022.129065. Epub 2022 May 5.
Plastic pollution is one of the global pressing environmental problems, threatening the health of aquatic and terrestrial ecosystems. However, the influence of plastic residues and microplastics (MPs) in soil ecosystems remains unclear. We conducted a global meta-analysis to quantify the effect of plastic residues and MPs on indicators of global soil ecosystem functioning (i.e. soil physicochemical properties, plant and soil animal health, abundance and diversity of soil microorganisms). Concentrations of plastic residues and MPs were 1-2700 kg ha and 0.01-600,000 mg kg, respectively, based on 6223 observations. Results show that plastic residues and MPs can decrease soil wetting front vertical and horizontal movement, dissolved organic carbon, and total nitrogen content of soil by 14%, 10%, 9%, and 7%, respectively. Plant height and root biomass were decreased by 13% and 14% in the presence of plastic residues and MPs, while the body mass and reproduction rate of soil animals decreased by 5% and 11%, respectively. However, soil enzyme activity increased by 7%441% in the presence of plastic residues and MPs. For soil microorganisms, plastic residues and MPs can change the abundance of several bacteria phyla and families, but the effects vary between different bacteria.
塑料污染是全球紧迫的环境问题之一，威胁着水生和陆地生态系统的健康。然而，塑料残留物和微塑料（MPs）在土壤生态系统中的影响尚不清楚。我们进行了一项全球荟萃分析，以量化塑料残留物和 MPs 对全球土壤生态系统功能指标（即土壤理化性质、植物和土壤动物健康、土壤微生物的丰度和多样性）的影响。基于 6223 个观测值，塑料残留物和 MPs 的浓度分别为 1-2700 kg ha 和 0.01-600,000 mg kg。结果表明，塑料残留物和 MPs 可分别使土壤湿润锋垂直和水平移动、土壤溶解有机碳和总氮含量降低 14%、10%、9%和 7%。植物高度和根生物量在塑料残留物和 MPs 的存在下分别降低了 13%和 14%，而土壤动物的体重和繁殖率分别降低了 5%和 11%。然而，土壤酶活性在塑料残留物和 MPs 的存在下增加了 7%441%。对于土壤微生物，塑料残留物和 MPs 可以改变几个细菌门和科的丰度，但不同细菌的影响不同。
