Nitrogen additions increase soil microbial nitrate- rather than ammonium- immobilization
文献类型：期刊论文
| 作者 | Song, Lei3,4; Liao, Jiaqiang3,4; Ma, Fangfang3,4; Wang, Song3,4; Yan, Yingjie3,4; Chen, Chen3,4; Zhou, Qingping1,2; Niu, Shuli3,4 |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2025-02-08 |
| 卷号 | N/A |
| 关键词 | Ammonium immobilization Nitrate immobilization Soil depth |
| ISSN号 | 0178-2762 |
| DOI | 10.1007/s00374-025-01896-3 |
| 产权排序 | 1 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Soil microbial nitrogen (N) immobilizations are important processes of biogeochemical cycles. How the soil N immobilizations change with increasing N inputs, especially in the subsoil, is not clear. Based on a long-term field manipulative experiment in an alpine meadow, we evaluated changes of soil gross NH4+ immobilization rate (GAIR) and NO3- immobilization rate (GNIR) under six N addition rates at 0-10, 10-20 and 20-40 cm soil depths. The corresponding biotic and abiotic mechanisms were also explored. The results showed that GAIR negatively correlated with N addition rate, but GNIR followed the unimodal response (increase first and then drop down) at all the three soil depths. The decrease in substrate supply by mineralization contributed to the decrease of GAIR with increasing N additions at the three soil depths. The changes of substrate supply by nitrification influenced the response of GNIR in the topsoil, but the changes of fungal abundance mediated the responses of GNIR in the subsoil. The increase in GNIR reduced denitrification derived N2O emission and contributed to retain NO3-, benefitting to the environmental protection. These different responses of GAIR and GNIR to increasing N additions and the different mechanisms underlying the responses from topsoil to subsoil should be considered in biogeochemical models and land management. |
| URL标识 | 查看原文 |
| WOS关键词 | LONG-TERM FERTILIZATION ; TRANSFORMATION RATES ; ALPINE GRASSLANDS ; GLOBAL PATTERNS ; FOREST ; GROSS ; RETENTION ; FLUXES ; MICROORGANISMS ; RESPIRATION |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001415599000001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/212333]  |
| 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 | Niu, Shuli |
| 作者单位 | 1.Southwest Minzu Univ, Sichuan Zoige Alpine Wetland Ecosyst Natl Observat, Chengdu 610041, Peoples R China 2.Southwest Minzu Univ, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China; 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Song, Lei,Liao, Jiaqiang,Ma, Fangfang,et al. Nitrogen additions increase soil microbial nitrate- rather than ammonium- immobilization[J]. BIOLOGY AND FERTILITY OF SOILS,2025,N/A. |
| APA | Song, Lei.,Liao, Jiaqiang.,Ma, Fangfang.,Wang, Song.,Yan, Yingjie.,...&Niu, Shuli.(2025).Nitrogen additions increase soil microbial nitrate- rather than ammonium- immobilization.BIOLOGY AND FERTILITY OF SOILS,N/A. |
| MLA | Song, Lei,et al."Nitrogen additions increase soil microbial nitrate- rather than ammonium- immobilization".BIOLOGY AND FERTILITY OF SOILS N/A(2025). |
入库方式： OAI收割
来源：地理科学与资源研究所
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