Microplastic Effects on Soil Aggregation in Sterilized and Non‐Sterilized Soils
Bibliographic record
Abstract
ABSTRACT The adverse impact of soil microplastics on aggregation is generally attributed to the potential toxicity to soil microorganisms. However, there have been few studies that use sterile soil as a control environment for comparison with regular soils to test this hypothesis. Consequently, this study conducted soil incubation with oven‐heated sterilized soils to explore the effects of polyethylene (PE) and polypropylene (PP) microplastics (at sizes of 0.595, 0.089, and 0.009 mm) on the soil aggregate stabilities. The aim was to determine if their primary mode of action is through biogenic interactions with soil microorganisms. The microplastics reduced 49% and 82% water‐stable aggregates of 0.5–1 and 1–2 mm fractions in Tianjin soils, respectively. The effects of microplastics were particularly pronounced in the non‐sterilized soils during the initial month of incubation. Additionally, microplastics increased the surface roughness of aggregates by an average of 39%, yet microplastics did not significantly affect the aggregate mechanical stability in either soil type. This study suggests that interactions between soil microplastics and microorganisms work crucially on soil aggregation, but microplastics could also possibly affect soil aggregation through non‐biogenic pathways.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".