Microplastics in plant-soil ecosystems: A meta-analysis

Zhang Y.; Gu Y.; Gao X.Cai C.Shi Y.

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Microplastics in plant-soil ecosystems: A meta-analysis

机译：Microplastics in plant-soil ecosystems: A meta-analysis

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? 2022 Elsevier LtdMicroplastic pollution is a recognized hazard in aquatic systems, but in the past decade has emerged as a pollutant of interest in terrestrial ecosystems. This paper is the first formal meta-analysis to examine the phytotoxic effects of microplastics and their impact on soil functions in the plant-soil system. Our specific aims were to: 1) determine how the type and size of microplastics affect plant and soil health, 2) identify which agricultural plants are more sensitive to microplastics, and 3) investigate how the frequency and amount of microplastic pollution affect soil functions. Plant morphology, antioxidant production and photosynthesis capacity were impacted by the composition of polymers in microplastics, and the responses could be negative, positive or neutral depending on the polymer type. Phytotoxicity testing revealed that maize (Zea mays) was more sensitive than rice (Oryza sativa) and wheat (Triticum aestivum) within the Poaceae family, while wheat and lettuce (Lactuca sativa) were less sensitive to microplastics exposure. Microplastics-impacted soils tend to be more porous and retain more water, but this did not improve soil stability or increase soil microbial diversity, suggesting that microplastics occupied physical space but were not integrated into the soil biophysical matrix. The meta-data revealed that microplastics enhanced soil evapotranspiration, organic carbon, soil porosity, CO2 flux, water saturation, nitrogen content and soil microbial biomass, but decreased soil N2O flux, water stable aggregates, water use efficiency, soil bulk density and soil microbial diversity.

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《Environmental Pollution》 |2022年第9期|119718.1-119718.11|共11页
作者
Zhang Y.; Gu Y.; Gao X.Cai C.Shi Y.;
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作者单位

Sichuan Agricultural University College of ResourcesSichuan Agricultural University College of Resources||Key Laboratory of Investigation and Monitoring Protection and Utilization for Cultivated Land Resources Ministry of Natural Resources;

||Sichuan Agricultural University College of Resources;

Sichuan Agricultural University College of Resources||Key Laboratory of Investigation and Monitoring Protection and Utilization for Cultivated Land Resources Ministry of Natural ResourcesTongji University State Key Laboratory of Pollution Control and Resources Reuse School of Environmental Science and EngineeringSichuan Institute of Geological Engineering;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
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关键词
Crop; Meta-analysis; Microplastics; Phytotoxicity; Soil property; Soil-plant ecosystem;

Microplastics in plant-soil ecosystems: A meta-analysis

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