Microplastics as an emerging threat to plant and soil health in agroecosystems

doi:10.1016/j.scitotenv.2021.147444

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	Microplastics as an emerging threat to plant and soil health in agroecosystems
	Zhou,Jie ; Wen,Yuan ; Marshall,Miles R.; Zhao,Jie ; Gui,Heng ; Yang,Yadong ; Zeng,Zhaohai ; Jones,Davey L.; Zang,Huadong
	2021
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	787 页码:147444
摘要	Microplastics (MPs, <5 mm in diameter) have been widely recognized as a critical environmental issue due to their extensive use and low degradation rate. Based on current evidence, our aim is to evaluate whether MPs represent an emerging threat to plant-soil health in agroecosystems. We assess the ecological risks to plant-microbe soil interactions associated with MPs and discuss the consequences of MPs on soil carbon (C), nutrient cycling, as well as greenhouse gas emissions in agroecosystems. We also identify knowledge gaps and give suggestions for future research. We conclude that MPs can alter a range of key soil biogeochemical processes by changing its properties, forming specific microbial hotspots, resulting in multiple effects on microbial activities and functions. Mixed effects of MPs on plant growth and performance can be explained by the direct toxicity of MPs or the indirect alteration in soil physical structures and microbial communities (i.e. symbiotic arbuscular mycorrhizal fungi). Because of the diverse nature of MPs found in soils, in terms of polymer type, shape and size, we also see differing effects on soil organic matter (SOM) decomposition, nutrient cycling, and greenhouse gases production. Importantly, increased bioavailable C from the decomposition of biodegradable MPs, which enhances microbial and enzymatic activities, potentially accelerates SOM mineralization and increases nutrient competition between plant and microbes. Thus, biodegradable MPs appear to pose a greater risk to plant growth compared to petroleum-based MPs. Although MPs may confer some benefits in agroecosystems (e.g. enhanced soil structure, aeration), it is thought that these will be far outweighed by the potential disbenefits.(c) 2021 Elsevier B.V. All rights reserved.
关键词	Microplastics Plant growth Soil carbon storage Nutrient cycling Greenhouse gas emissions Biodegradable plastics Agroecosystem POLYSTYRENE LATEX NANOPARTICLES ORGANIC-MATTER PLASTIC MULCH FILM RESIDUES CARBON NITRIFICATION MECHANISMS CYTOTOXICITY NANOPLASTICS EMISSIONS
DOI	10.1016/j.scitotenv.2021.147444
WOS记录号	WOS:000662579000008
引用统计	被引频次：153[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73095
专题	中国科学院昆明植物研究所
作者单位	1.China Agr Univ, Coll Agron & Biotechnol, Beijing, Peoples R China 2.Marshall, Miles R.; Jones, Davey L.] Bangor Univ, Sch Nat Sci, Bangor LL57 2UW, Gwynedd, Wales 3.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China 4.Chinese Acad Sci, Kunming Inst Bot, Ctr Mt Futures CMF, Kunming, Yunnan, Peoples R China 5.Jones, Davey L.] Univ Western Australia, UWA Sch Agr & Environm, Soils West, Perth, WA 6009, Australia
推荐引用方式 GB/T 7714	Zhou,Jie,Wen,Yuan,Marshall,Miles R.,et al. Microplastics as an emerging threat to plant and soil health in agroecosystems[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,787:147444.
APA	Zhou,Jie.,Wen,Yuan.,Marshall,Miles R..,Zhao,Jie.,Gui,Heng.,...&Zang,Huadong.(2021).Microplastics as an emerging threat to plant and soil health in agroecosystems.SCIENCE OF THE TOTAL ENVIRONMENT,787,147444.
MLA	Zhou,Jie,et al."Microplastics as an emerging threat to plant and soil health in agroecosystems".SCIENCE OF THE TOTAL ENVIRONMENT 787(2021):147444.

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