Global Responses of Soil Carbon Dynamics to Microplastic Exposure : A Data Synthesis of Laboratory Studies
Xiang, Yangzhou (Guizhou Education University)
Rillig, Matthias (Freie Universität Berlin)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Liu, Ying (Guizhou Education University)
Yao, Bin (Institute of Ecolog Conservation and Restoration)
Li, Yuan (Lanzhou University)

Data:	2024
Resum:	Microplastics (MPs) contamination presents a significant global environmental challenge, with its potential to influence soil carbon (C) dynamics being a crucial aspect for understanding soil C changes and global C cycling. This meta-analysis synthesizes data from 110 peer-reviewed publications to elucidate the directional, magnitude, and driving effects of MPs exposure on soil C dynamics globally. We evaluated the impacts of MPs characteristics (including type, biodegradability, size, and concentration), soil properties (initial pH and soil organic C [SOC]), and experimental conditions (such as duration and plant presence) on various soil C components. Key findings included the significant promotion of SOC, dissolved organic C, microbial biomass C, and root biomass following MPs addition to soils, while the net photosynthetic rate was reduced. No significant effects were observed on soil respiration and shoot biomass. The study highlights that the MPs concentration, along with other MPs properties and soil attributes, critically influences soil C responses. Our results demonstrate that both the nature of MPs and the soil environment interact to shape the effects on soil C cycling, providing comprehensive insights and guiding strategies for mitigating the environmental impact of MPs.
Ajuts:	Agencia Estatal de Investigación TED2021-132627B-I00 Agencia Estatal de Investigación PID2022-140808NB-I00
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Microplastics ; Soil organic carbon ; Soil respiration ; Meta-analysis
Publicat a:	Environmental Science & Technology, Vol. 58, Issue 13 (April 2024) , p. 5821-5831, ISSN 1520-5851

DOI: 10.1021/acs.est.3c06177
PMID: 38416534

11 p, 4.0 MB

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