Microplastic effects on soil nitrogen cycling enzymes : A global meta-analysis of environmental and edaphic factors
Xiang, Yangzhou (Guizhou Education University)
Yao, Bin (Chinese Academy of Forestry. Institute of Ecology Conservation and Restoration)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Nizzetto, Luca (Norwegian Institute for Water Research)
Li, Rui (Chinese Academy of Sciences. Northwest Institute of Eco-Environment and Resources)
Liu, Ying (Guizhou Education University)
Luo, Yang (Guizhou Education University)
Räty, Mari (Natural Resources Institute Finland)
Long, Jian (Guizhou Education University)
Li, Yuan (Natural Resources Institute Finland)

Fecha:	2025
Resumen:	Microplastic accumulation in soil ecosystems poses significant environmental concerns, potentially impacting nitrogen cycling processes and ecosystem health. This meta-analysis of 147 studies (1138 data points) assessed the impact of microplastics (MPs) on soil nitrogen-acquisition enzymes. We found that MPs exposure significantly increased soil urease (UE) and leucine aminopeptidase activities by 7. 6 % and 8. 0 %, respectively, while N-acetyl-β-D-glucosaminidase activity was not significantly affected. Biodegradable MPs showed more pronounced effects compared to conventional MPs. Enzyme activities were influenced by MPs properties (e. g. , polymer type, size, concentration), experimental conditions (e. g. , field or laboratory setting, temperature, nitrogen fertilization), and soil properties (e. g. , clay content, pH, organic carbon, total nitrogen). For instance, acidic soils enhanced UE activity, while neutral soils reduced it. These findings emphasize the complex interactions between MPs and soil ecosystems, highlighting the need for context-specific environmental management strategies and policy-making approaches to mitigate the impacts of MPs pollution on soil health.
Ayudas:	Agencia Estatal de Investigación PID2020-115770RB-I00 Agencia Estatal de Investigación PID2022-140808NB-I00 Agencia Estatal de Investigación TED2021-132627B-I00 European Commission 101000210
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Biodegradable plastic ; Enzyme activity ; Meta-analysis ; Nitrogen cycle ; Polymer type
Publicado en:	Journal of hazardous materials, Vol. 484 (February 2025) , art. 136677, ISSN 1873-3336

DOI: 10.1016/j.jhazmat.2024.136677

16 p, 9.7 MB

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