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20 resultsShowing papers similar to High‐density polyethylene microplastics in agricultural soil: Impact on microbes, enzymes, and carbon‐nitrogen ratio
Clear[Effects of Polyethylene Microplastics on Soil Nutrients and Enzyme Activities].
Researchers studied how different concentrations and sizes of polyethylene microplastics affect soil chemistry and enzyme activity over four months. They found that smaller microplastics had a greater impact on soil nutrient cycling than larger ones, and that higher concentrations more significantly disrupted enzyme functions critical for soil health. The study indicates that microplastic pollution in agricultural soils could impair the biological processes that maintain soil fertility.
Response of soil biochemical properties and ecosystem function to microplastics pollution
This study found that polyethylene microplastics significantly disrupted soil health by reducing enzyme activity, lowering nutrient availability, and impairing overall ecosystem function. Smaller microplastics caused more damage than larger ones, and the effects were dose-dependent, suggesting that as microplastic pollution accumulates in agricultural soil, it could increasingly threaten the soil health that food production depends on.
Assessing Microplastic Contamination Effects on Soil Microbial Communities in Agricultural Land
This study sampled agricultural soils with varying degrees of microplastic contamination to assess effects on microbial diversity, abundance, and enzymatic activity, finding that higher microplastic concentrations reduced microbial diversity and suppressed nutrient-cycling enzyme activity.
Response of soil enzyme activities and bacterial communities to the accumulation of microplastics in an acid cropped soil
Researchers tested how polyethylene and polyvinyl chloride microplastics at different concentrations affect enzyme activity and bacterial communities in acidic agricultural soil. Both types of microplastics reduced the diversity of soil bacteria while stimulating certain enzymes related to nitrogen and phosphorus cycling. The findings suggest that microplastic accumulation in farmland may alter important soil biological processes, potentially affecting nutrient cycling and the breakdown of pollutants.
Polyethylene microplastics distinctly affect soil microbial community and carbon and nitrogen cycling during plant litter decomposition
Researchers measured how polyethylene microplastics affect soil microbial communities and carbon cycling in agricultural soils, finding that microplastic addition shifted microbial diversity and suppressed key carbon mineralization processes. The results suggest microplastic accumulation in farmland could impair soil carbon storage.
Inhibitory effect of microplastics on soil extracellular enzymatic activities by changing soil properties and direct adsorption: An investigation at the aggregate-fraction level
Researchers studied how polyethylene microplastics affect the activity of soil enzymes over 150 days, examining responses across different soil aggregate sizes. They found that microplastics inhibited enzyme activities by altering soil properties, directly adsorbing enzymes, and competing with microorganisms for space. The study reveals that microplastic pollution can undermine key biological processes that maintain soil quality, with different soil aggregate fractions responding in distinct ways.
Effects and mechanism of microplastics on organic carbon and nitrogen cycling in agricultural soil: A review
This review summarizes how microplastic pollution in agricultural soils affects carbon and nitrogen cycling by altering soil properties, microbial communities, and enzymatic activity. Evidence indicates that microplastics can change organic matter degradation rates and nutrient cycling processes, with implications for soil health and agricultural productivity.
Influence of biodegradable microplastics on soil carbon cycling: Insights from soil respiration, enzyme activity, carbon use efficiency and microbial community
Researchers investigated how biodegradable microplastics affect carbon cycling in soil by measuring respiration, enzyme activity, and microbial communities over 64 days. They found that certain biodegradable plastics, particularly polyhydroxyalkanoates, dramatically increased soil carbon emissions by up to 665% and significantly altered microbial community structure. The study suggests that even biodegradable plastics can substantially disrupt soil ecosystem processes when they break down into microplastic-sized particles.
Effects of different microplastic types on soil physicochemical properties, enzyme activities, and bacterial communities
A 230-day experiment tested six types of microplastics in soil and found that each type differently altered soil moisture, chemistry, enzyme activity, and microbial communities. Biodegradable plastic (PHA) caused the most significant disruption to beneficial soil bacteria, which matters for human health because soil microbe changes can affect crop nutrition and food safety.
Microplastic coupled with soil dissolved organic matter mediated changes in the soil chemical and microbial characteristics
Researchers conducted a two-month incubation experiment to study how polyethylene microplastics of different sizes and concentrations affect soil carbon composition and microbial communities. They found that microplastics altered the dissolved organic matter in soil and shifted how microbial communities utilized carbon sources. The study suggests that microplastic accumulation in agricultural soils may have cascading effects on soil health and nutrient cycling.
Microplastics regulate soil microbial activities: Evidence from catalase, dehydrogenase, and fluorescein diacetate hydrolase
This review examines how microplastics affect the activity of soil microorganisms, finding that results range widely from boosting to suppressing microbial function depending on the type, size, and age of the plastic, as well as soil conditions. Smaller nanoplastics can directly damage microbial cells, while larger microplastics alter soil chemistry and the toxicity of co-existing pollutants. Since soil microbes drive processes critical to agriculture and food production, these disruptions could have downstream effects on human food systems.
Responses of microbial communities to the addition of different types of microplastics in agricultural soils
Researchers conducted a 90-day soil incubation study to examine how four types of microplastics — polyethylene, polypropylene, polyvinyl chloride, and polyethylene terephthalate — affect agricultural soil properties and microbial communities. They found that all four types significantly altered soil enzyme activities, nutrient content, and the diversity of microbial populations. The study indicates that microplastic contamination in farmland can disrupt soil health in ways that may affect agricultural productivity.
Effects of polyethylene microplastics and heavy metals on soil-plant microbial dynamics
This study examined how polyethylene microplastics interact with heavy metals in soil and found that microplastics significantly reduced plant growth while altering soil enzyme activity and microbial communities. The combination of microplastics and heavy metals disrupted nutrient cycling in the soil in ways that were different from either pollutant alone. These findings suggest that microplastic contamination in agricultural soil could affect crop nutrition and food production.
The effects of three different microplastics on enzyme activities and microbial communities in soil
Researchers added three types of microplastics (film PE, fiber PP, and sphere PP) to loamy and sandy soils and measured effects on enzyme activities and microbial communities, finding that all three types altered microbial community structure and nutrient-cycling enzyme activities in soil-type-dependent ways.
Assessment of microplastic pollution on soil health and crop responses: Insights from dose-dependent pot experiments
Researchers combined field investigation and pot experiments to assess how microplastic contamination at different doses affects soil health indicators and crop growth performance. Field soils showed measurable microplastic contamination, and pot experiments demonstrated dose-dependent effects on soil enzyme activity, water retention, and plant growth metrics.
Microplastics affect ecosystem multifunctionality: Increasing evidence from soil enzyme activities
This review examines how microplastics alter the activity of soil enzymes that are essential for nutrient cycling, decomposition, and carbon regulation. Biodegradable microplastics generally caused more pronounced effects than conventional plastics, and the changes in enzyme activity could ultimately affect soil fertility and the nutritional quality of crops grown for human consumption.
Effects of polyethylene microplastics on properties, enzyme activities, and the succession of microbial community in Mollisol: At the aggregate level
Researchers studied how polyethylene microplastics affect microbial properties and enzyme activities in Mollisol farmland soil at the aggregate level, using 16S rDNA sequencing and enzyme activity measurements. Low-dose PE microplastics increased the proportion of large aggregates and decreased microbial diversity in certain aggregate size fractions, with effects varying by aggregate size.
Impact of high-density polyethylene (HDPE) microparticles on soil physical-chemical properties, CO2 emissions, and microbial community in a two-year field trial
Researchers conducted a two-year field trial examining how high-density polyethylene microparticles at different concentrations affect soil properties, carbon dioxide emissions, and microbial communities. They measured changes in soil aggregate stability, chemical properties, and microbial diversity over time in treated versus control plots. The study provides field-scale evidence on how microplastic contamination influences soil health and function over extended periods.
Microplastic effects on soil nitrogen cycling enzymes: A global meta-analysis of environmental and edaphic factors
This large-scale meta-analysis of 147 studies found that microplastics in soil significantly increased urease and leucine aminopeptidase enzyme activities by about 8%, potentially disrupting nitrogen cycling. Biodegradable microplastics had more pronounced effects than conventional plastics, and responses depended on soil pH, polymer type, particle size, and concentration.
Effect of emerging contaminants on soil microbial community composition, soil enzyme activity, and strawberry plant growth in polyethylene microplastic-containing soils
Researchers found that emerging contaminants altered soil microbial community composition and enzyme activity, but these effects were suppressed when HDPE microplastics were also present in the soil, suggesting microplastics may modulate how soils respond to chemical contaminants.