Insights into effects of conventional and biodegradable microplastics on organic carbon decomposition in different soil aggregates
文献类型：期刊论文
| 作者 | Wang, Jiaxin3; Song, Minghua2; Lu, Mengnan1; Wang, Chunmei3; Zhu, Chenying3; Dou, Xiaomin3 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2024-10-15 |
| 卷号 | 359页码:12 |
| 关键词 | Soil aggregates Microplastics Carbon dioxide emissions Soil bacterial communities Functional genes |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2024.124751 |
| 产权排序 | 2 |
| 英文摘要 | The impacts of microplastics on soil ecological functions such as carbon recycling and soil structure maintenance have been extensively focused. However, the mechanisms underlying the impacts of microplastics on soil carbon transformation and soil microbial community at soil aggregate scale have not been clarified yet. In this work, the effects and action mechanisms of traditional microplastic polypropylene (PP) and degradable microplastic polylactic acid (PLA) on carbon transformation in three sizes of soil aggregates were investigated. The results showed that both PP and PLA promoted CO2 emission, and the effect depended on the type and content of microplastics, and the size of soil aggregates. Changes in soil carbon stocks were mainly driven by changes in organic carbon associated with macroaggregates. For macroaggregates, PP microplastics decreased soil organic carbon (SOC) as well as dissolved organic carbon (DOC). These changes were reversed in microaggregates and silt and clay. Interestingly, PLA increased the SOC, DOC and CO2 emissions in bulk soil and all three aggregates with a dose-effect response. These changes were associated with soil microbes, functional genes and enzymes associated with the degradation of labile and recalcitrant carbon fractions. Furthermore, PP and PLA reduced bacterial community diversities and shifted bacterial community structures in both the three aggregates and in bulk soil. Alterations of functional genes induced by microplastics were the key driving factors of their impacts on carbon transformation in soil aggregates. This research opened up a new insight into the mechanisms underlying the impacts of microplastics on soil carbon transformation, and helped us make rational assessments of the risks and the disturbances of microplastics on soil carbon cycling. |
| WOS关键词 | FRACTIONS ; MATTER |
| 资助项目 | National Natural Science Foundation of China[41971024] ; Beijing Natural Science Foundation[8232039] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001298022100001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China ; Beijing Natural Science Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/209056]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Wang, Chunmei |
| 作者单位 | 1.Beijing Langxinming Environm Technol Co Ltd, 16 W 4th Ring Middle Rd, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, A11,Datun Rd, Beijing 100101, Peoples R China 3.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jiaxin,Song, Minghua,Lu, Mengnan,et al. Insights into effects of conventional and biodegradable microplastics on organic carbon decomposition in different soil aggregates[J]. ENVIRONMENTAL POLLUTION,2024,359:12. |
| APA | Wang, Jiaxin,Song, Minghua,Lu, Mengnan,Wang, Chunmei,Zhu, Chenying,&Dou, Xiaomin.(2024).Insights into effects of conventional and biodegradable microplastics on organic carbon decomposition in different soil aggregates.ENVIRONMENTAL POLLUTION,359,12. |
| MLA | Wang, Jiaxin,et al."Insights into effects of conventional and biodegradable microplastics on organic carbon decomposition in different soil aggregates".ENVIRONMENTAL POLLUTION 359(2024):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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