Microplastics decrease soil compressibility but have no major impact on soil physical properties
文献类型：期刊论文
| 作者 | Dong, Yuhao1,2; Ren, Lidong1,2; Jia, Xiaoxu1,2; Liao, Xiaoyong1,2; Huang, Laiming1,2; Zhang, Xubo1,2; Flury, Markus3,4; Xu, Li5 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 253页码:106688 |
| 关键词 | Uniaxial compression test Microplastic shapes Soil structure Soil compaction X-ray micro-CT |
| ISSN号 | 0167-1987 |
| DOI | 10.1016/j.still.2025.106688 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Microplastic pollution of soils has raised concerns on how microplastics impact soil properties and functions. Impacts of microplastics on soil properties is usually studied by amending soils with microplastics at various concentrations, but little attention has been given on how to compact soils after microplastic incorporation and how microplastics affect soil compressibility. Here, we used the uniaxial compression test to investigate the effects of microplastic type (i.e., granular polyethylene and fibrous polypropylene), size (i.e., 20, 200, 1000 mu m for granular polyethylene and 3000 and 5000 mu m for fibrous polypropylene) and concentration (i.e., 0.0 %, 0.5 %, 1 % and 2 %) on compression characteristics of a silt loam soil, followed by the evaluation of soil structure, water holding characteristics, and water and gas permeability. Soil compression was significantly affected by microplastic types, size, and concentrations. Granular microplastics increased the void ratio uniformly within the applied stress whereas fibrous microplastics increased the void ratio much more at low stress than at high stress. As a result, fibrous microplastics significantly increased the compression index (Cc) with increasing microplastics concentration. Granular microplastics decreased the swelling index (Cs), making soil less resilient against compaction. However, soil structure, water holding characteristics, and water and gas permeability were not significantly affected, except for the 5000 mu m fibrous polypropylene at a concentration of 2 %, where soil porosity increased and soil water holding capacity decreased. These findings highlight the importance in considering soil compressibility, especially for laboratory incubation experiments, when evaluating microplastic effects. |
| URL标识 | 查看原文 |
| WOS关键词 | ORGANIC-MATTER ; RESILIENCE ; PERMEABILITY ; COMPACTION ; DIFFUSION ; STRENGTH |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001502692700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214570]  |
| 专题 | 黄河三角洲现代农业工程实验室_外文论文 |
| 通讯作者 | Jia, Xiaoxu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Modern Agr Engn Lab, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China; 3.Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA; 4.Washington State Univ, Dept Crop & Soil Sci, Puyallup, WA 98371 USA; 5.Beijing Acad Agr & Forestry Sci, Inst Qual Stand & Testing Technol, Beijing 100097, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Yuhao,Ren, Lidong,Jia, Xiaoxu,et al. Microplastics decrease soil compressibility but have no major impact on soil physical properties[J]. SOIL & TILLAGE RESEARCH,2025,253:106688. |
| APA | Dong, Yuhao.,Ren, Lidong.,Jia, Xiaoxu.,Liao, Xiaoyong.,Huang, Laiming.,...&Xu, Li.(2025).Microplastics decrease soil compressibility but have no major impact on soil physical properties.SOIL & TILLAGE RESEARCH,253,106688. |
| MLA | Dong, Yuhao,et al."Microplastics decrease soil compressibility but have no major impact on soil physical properties".SOIL & TILLAGE RESEARCH 253(2025):106688. |
入库方式： OAI收割
来源：地理科学与资源研究所
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