Research progress of microplastics in soil-plant system : Ecological effects and potential risks

Copyright © 2021. Published by Elsevier B.V..

The effect of microplastics on soil ecosystem is a hot topic in recent years. It is increasingly recognized that soil is also an important sink for microplastics in addition to the aquatic environment. This review aims to discuss the direct and indirect effects of microplastics on the soil-plant system, focusing on the effects of microplastics on soil aggregates and soil nutrient cycling as well as the combined effects of microplastics and other pollutants on soil-plant systems. Microplastics have been shown to affect the rooting ability of plants by altering soil bulk density and water-holding capacity, as well as reducing photosynthetic rate by directly interfering with the balance of plant chlorophyll a/chlorophyll b ratios. In addition, microplastics affect the stability of aggregates by interfering with abiotic factors (e.g., sesquioxide and exchangeable cations) or biotic factors (e.g., soil organic matter and organism activities in the soil). Moreover, microplastics may affect soil nutrient cycling by altering the dominant bacteria phyla in the soil or genes and enzymes associated with the carbon, nitrogen, and phosphorus cycle. When microplastics and other pollutants have combined effects on plants, microplastics attached onto the root surface physically hamper the contact of the pollutants with the roots but are more likely to exacerbate the damage of pollutants to plants. Different types, sizes and concentrations of microplastics have different effects on the soil-plant system. Microplastics with similar shape and size to soil particles have less significant effects, while microfibers, small-sized microplastics and biodegradable plastic particles have more significant effects. Finally, this review also provides an outlook for future research.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:812

Enthalten in:

The Science of the total environment - 812(2022) vom: 15. März, Seite 151487

Sprache:

Englisch

Beteiligte Personen:

Huang, Danlian [VerfasserIn]
Wang, Xinya [VerfasserIn]
Yin, Lingshi [VerfasserIn]
Chen, Sha [VerfasserIn]
Tao, Jiaxi [VerfasserIn]
Zhou, Wei [VerfasserIn]
Chen, Haojie [VerfasserIn]
Zhang, Gaoxia [VerfasserIn]
Xiao, Ruihao [VerfasserIn]

Links:

Volltext

Themen:

Adsorb
Chlorophyll A
Combined effects
Journal Article
Microplastics
Plant growth
Plastics
Review
Soil
Soil aggregates
Soil nutrient cycling
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Anmerkungen:

Date Completed 02.02.2022

Date Revised 02.02.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.scitotenv.2021.151487

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM332810445