Long-term urea application reshapes forest soil nitrogen cycling and enhances N2O emissions
文献类型：期刊论文
| 作者 | Xue, Jing2,3; Fang, Huajun2,3,4; Lu, Mingzhu1; Cheng, Shulan2; Guo, Yifan2,3; Shi, Fangying2,3; Wang, Hui2,3; Chen, Long2; Pu, Haiguang2,3; Liu, Bingqian2 |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2026-03-25 |
| 卷号 | N/A |
| 关键词 | Urea application N2O emissions Forest soil N cycling Autotrophic nitrification Temperate mixed forest |
| ISSN号 | 0178-2762 |
| DOI | 10.1007/s00374-026-02002-x |
| 产权排序 | 1 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Increasing anthropogenic nitrogen (N) deposition alters forest soil N cycling, affecting nitrous oxide (N2O) emissions and carbon sequestration. While the impacts of NH4+ and NO3- inputs are well studied, the effects of urea application remain poorly understood, particularly regarding gross soil N transformation processes. This study examined the long-term effects of urea addition on soil N cycling and N2O emissions in a temperate mixed forest in the Changbai Mountains, Northeast China. A multi-level urea application experiment was conducted alongside six years of growing-season N2O flux measurements, soil physicochemical analyses, and N-15 paired labeling to quantify gross N transformation rates. Long-term urea application significantly increased soil N2O emissions and their interannual variability. Under the highest N treatment, cumulative growing-season N2O emissions were more than 20 times greater than those of the control and continued to rise over time. Urea addition promoted NO3- accumulation and soil acidification while suppressing microbial NH4+ immobilization. Urea application shifted soil N cycling from a conservative, immobilization-dominated system to an open, nitrification- and loss-dominated regime. Among measured processes, autotrophic nitrification was the only pathway positively correlated with N2O emissions. Overall, long-term urea application substantially enhances forest soil N2O emissions by weakening NH4+ retention and stimulating autotrophic nitrification. |
| URL标识 | 查看原文 |
| WOS关键词 | OXIDE EMISSIONS ; DEPOSITION ; PATTERNS ; RESPONSES |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001721881300001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221290]  |
| 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.Chinese Acad Sci, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan Bot Garden, Wuhan 430074, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 4.Zhongke Jian Inst Ecoenvironm Sci, Jian 343000, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Xue, Jing,Fang, Huajun,Lu, Mingzhu,et al. Long-term urea application reshapes forest soil nitrogen cycling and enhances N2O emissions[J]. BIOLOGY AND FERTILITY OF SOILS,2026,N/A. |
| APA | Xue, Jing.,Fang, Huajun.,Lu, Mingzhu.,Cheng, Shulan.,Guo, Yifan.,...&Yin, Jiahao.(2026).Long-term urea application reshapes forest soil nitrogen cycling and enhances N2O emissions.BIOLOGY AND FERTILITY OF SOILS,N/A. |
| MLA | Xue, Jing,et al."Long-term urea application reshapes forest soil nitrogen cycling and enhances N2O emissions".BIOLOGY AND FERTILITY OF SOILS N/A(2026). |
入库方式： OAI收割
来源：地理科学与资源研究所
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