Long-Term Nitrogen Addition Regulates Plant-Soil 15N-13C Coupling Through Species Traits and Temporal-Spatial Dynamics in a Temperate Forest
文献类型：期刊论文
| 作者 | Zhou, Mingxin1; Li, Yibo2 |
| 刊名 | FORESTS
 |
| 出版日期 | 2025-06-22 |
| 卷号 | 16期号:7页码:1046 |
| 关键词 | nitrogen deposition N-15-C-13 dual labeling ammonium vs. nitrate plant functional traits |
| DOI | 10.3390/f16071046 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Nitrogen deposition is a critical driver of plant-soil interactions in forest ecosystems. However, the species-specific coordination of nitrogen uptake and carbon assimilation-traced using N-15- and C-13-labeled compounds-under varying nitrogen forms, depths, and time points remains poorly understood. We conducted a dual-isotope ((NH4Cl)-N-15, (KNO3)-N-15, and (Na2CO3)-C-13) labeling experiment in a temperate secondary forest to investigate nutrient uptake and carbon assimilation in three understory species-Carex siderosticta, Maianthemum bifolium, and Oxalis acetosella-across three nitrogen treatments (control, low N, and high N), two soil depths (0-5 cm and 5-15 cm), and two post-labeling time points (24 h and 72 h). We quantified N-15 uptake and C-13 assimilation in above- and belowground plant tissues, as well as N-15 and C-13 retention in soils. C. siderosticta exhibited the highest total N-15 uptake (2.2-6.9 mu g N m(-2) aboveground; 1.4-4.1 mu g N m(-2) belowground) and C-13 assimilation (58.4-111.2 mg C m(-2) aboveground; 17.6-39.2 mg C m(-2) belowground) under high ammonium at 72 h. High nitrogen input significantly enhanced the coupling between plant biomass and nutrient assimilation (R-2 > 0.9), and increased N-15-TN and C-13-SOC retention in the surface soil layer (13,200-17,400 mu g N kg(-1); 30,000-44,000 mu g C kg(-1)). Multifactorial analysis revealed significant interactions among nitrogen treatment, form, depth, and time. These findings demonstrate that ammonium-based enrichment promotes nutrient acquisition and carbon assimilation in responsive species and enhances surface soil C-N retention, highlighting the integrative effects of nitrogen form, species traits, and spatial-temporal dynamics on forest biogeochemistry. |
| URL标识 | 查看原文 |
| WOS关键词 | MICROBIAL STRATEGIES ; USE EFFICIENCY ; PADDY SOILS ; CARBON ; ASSIMILATION ; DEPOSITION ; IMPACTS |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:001536752900001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215565]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Li, Yibo |
| 作者单位 | 1.Heilongjiang Inst Construct Technol, Harbin 150001, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Mingxin,Li, Yibo. Long-Term Nitrogen Addition Regulates Plant-Soil 15N-13C Coupling Through Species Traits and Temporal-Spatial Dynamics in a Temperate Forest[J]. FORESTS,2025,16(7):1046. |
| APA | Zhou, Mingxin,&Li, Yibo.(2025).Long-Term Nitrogen Addition Regulates Plant-Soil 15N-13C Coupling Through Species Traits and Temporal-Spatial Dynamics in a Temperate Forest.FORESTS,16(7),1046. |
| MLA | Zhou, Mingxin,et al."Long-Term Nitrogen Addition Regulates Plant-Soil 15N-13C Coupling Through Species Traits and Temporal-Spatial Dynamics in a Temperate Forest".FORESTS 16.7(2025):1046. |
入库方式： OAI收割
来源：地理科学与资源研究所
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