Long-term nitrogen addition enhanced soil carbon sequestration through coupled physicochemical and microbial mechanisms in a temperate forest
文献类型：期刊论文
| 作者 | Liu, Yuejia2; Dou, Xiaomin2; Wang, Chunmei2; Song, Minghua1; Liu, Dan2; Liu, Xiaoqing2; Zhu, Qing2 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 393页码:127068 |
| 关键词 | Nitrogen addition Soil organic carbon CO2 emission Aggregates Microbial community composition Carbon degradation genes |
| ISSN号 | 0301-4797 |
| DOI | 10.1016/j.jenvman.2025.127068 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | As critical carbon (C) sinks in terrestrial ecosystems, temperate forests exhibit complex responses to atmospheric nitrogen (N) deposition. Through a 13-year controlled field experiment, we systematically investigated the effects of three N forms (NO3--N, NH4+-N, NH4NO3-N) at two deposition levels (50/150 kg Nha(-1)yr(-1)) on soil organic C (SOC) dynamics. The experimental data revealed a three-phase SOC accumulation pattern, with aggregate-associated C showing 6.23-43.54 % enhancement. Particularly, silt-clay fractions demonstrated superior C sequestration capacity (13.10 +/- 0.45 g kg(-1)), suggesting strengthened physical protection through aggregate stabilization. Nuclear magnetic resonance spectroscopic (NMR) analysis confirmed progressive increases in stable C pools, with aromatic and alkyl C rising by 12.44-42.94 %. Microbial necromass accumulation contributed 11.90-44.31 % to SOC stock, enhancing biochemical resistance to decomposition. Metagenomic evidence revealed N-dependent microbial community restructuring, particularly diminished abundances of ligninolytic genes, which suppressed recalcitrant SOC mineralization. These dual regulation mechanisms - physical protection via aggregate formation and biochemical stabilization through microbial metabolic constraint - synergistically increased SOC stability. Our findings elucidate the C-N coupling mechanisms in forest soils under chronic N enrichment, providing critical insights for predicting terrestrial C sink potential under global change scenarios. |
| URL标识 | 查看原文 |
| WOS关键词 | ORGANIC-MATTER ; BACTERIAL COMMUNITIES ; AGGREGATE STABILITY ; N DEPOSITION ; FERTILIZATION ; LITTER ; DECOMPOSITION ; TURNOVER ; CHINA ; CO2 |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001566579600001 |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/216144]  |
| 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; Song, Minghua |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, A11,Datun Rd, Beijing 100101, Peoples R China 2.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing Key Lab Source Control Technol Water Pollu, Beijing 100083, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, Yuejia,Dou, Xiaomin,Wang, Chunmei,et al. Long-term nitrogen addition enhanced soil carbon sequestration through coupled physicochemical and microbial mechanisms in a temperate forest[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2025,393:127068. |
| APA | Liu, Yuejia.,Dou, Xiaomin.,Wang, Chunmei.,Song, Minghua.,Liu, Dan.,...&Zhu, Qing.(2025).Long-term nitrogen addition enhanced soil carbon sequestration through coupled physicochemical and microbial mechanisms in a temperate forest.JOURNAL OF ENVIRONMENTAL MANAGEMENT,393,127068. |
| MLA | Liu, Yuejia,et al."Long-term nitrogen addition enhanced soil carbon sequestration through coupled physicochemical and microbial mechanisms in a temperate forest".JOURNAL OF ENVIRONMENTAL MANAGEMENT 393(2025):127068. |
入库方式： OAI收割
来源：地理科学与资源研究所
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