Global hierarchical meta-analysis of microplastic-induced changes in the soil nitrogen cycle
文献类型：期刊论文
| 作者 | Liu, Bingqian2; Fang, Huajun1,2,3; Cheng, Shulan2; Guo, Yifan2,3; Shi, Fangying2,3; Wang, Hui2,3; Chen, Long2; Pu, Haiguang2,3; Hu, Yunzhe2; Xue, Jing2,3 |
| 刊名 | ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 296页码:124014 |
| 关键词 | Microplastic pollution Soil N transformation Functional gene abundance Global meta-analysis |
| ISSN号 | 0013-9351 |
| DOI | 10.1016/j.envres.2026.124014 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Microplastics (MPs) significantly disrupt soil nitrogen (N) cycling by altering physicochemical properties and microbial communities, affecting fertility and crop productivity. However, most studies are short-term and lack comprehensive evaluations of MPs type, size, and concentration. This global meta-analysis assesses MPs' impact on soil N cycling, explores the influence mechanisms of MP characteristics, and to inform precise management strategies. Results show that high concentrations (>1%) and small particle sizes (1-100 mu m) of MPs simultaneously increased total carbon (TC, +22.3%), dissolved organic carbon (DOC, +23.0%), and microbial biomass carbon (MBC, +23.5%) through a dual mechanism of physical adsorption and carbon supply from degradation, thereby providing readily available carbon sources for soil microorganisms. Although MPs had no significant effect on total nitrogen (TN), they markedly increased NH4+-N (+36.5%) and promoted NO3--N consumption (-26.7%). This pattern was more pronounced in warm (10-30 degrees C) and humid (>400 mm) climatic regions, likely due to enhanced denitrification under high temperature and moisture conditions. Functional gene responses were tightly coupled with these chemical changes: MPs of 1-100 mu m significantly upregulated denitrification genes nirK (+49.2%) and nosZ (+35.0%), directly driving NO3--N reduction, whereas large (1000-5000 mu m) and ultrafine (<1 mu m) MPs preferentially stimulated nitrification-related genes (AOA/AOB-amoA, +19.7-35.0%), corresponding to NH4+-N accumulation. Biodegradable MPs further released labile carbon, resulting in a greater increase in nirK abundance (+24.2%) than non-biodegradable MPs, thereby explaining their stronger denitrification-promoting effects. Overall, MP concentration, particle size, and biodegradability jointly regulate soil nitrogen cycling by first altering carbon availability and microenvironmental conditions, and subsequently directing nitrification or denitrification processes, with these effects being amplified under warm and humid climates. These findings highlight MPs as ecological regulators with far-reaching impacts beyond traditional physical pollutants and offer vital insights for sustainable N management and soil pollution mitigation. |
| URL标识 | 查看原文 |
| WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| WOS记录号 | WOS:001697231200010 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221235]  |
| 专题 | 千烟洲站森林生态系统研究中心_外文论文 |
| 通讯作者 | Fang, Huajun; Cheng, Shulan; Guo, Yifan |
| 作者单位 | 1.Zhongke Jian Inst Ecoenvironm Sci, Jian 343000, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, Bingqian,Fang, Huajun,Cheng, Shulan,et al. Global hierarchical meta-analysis of microplastic-induced changes in the soil nitrogen cycle[J]. ENVIRONMENTAL RESEARCH,2026,296:124014. |
| APA | Liu, Bingqian.,Fang, Huajun.,Cheng, Shulan.,Guo, Yifan.,Shi, Fangying.,...&Yin, Jiahao.(2026).Global hierarchical meta-analysis of microplastic-induced changes in the soil nitrogen cycle.ENVIRONMENTAL RESEARCH,296,124014. |
| MLA | Liu, Bingqian,et al."Global hierarchical meta-analysis of microplastic-induced changes in the soil nitrogen cycle".ENVIRONMENTAL RESEARCH 296(2026):124014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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