Plant use of water across soil depths regulates species dominance under nitrogen addition
文献类型：期刊论文
| 作者 | Huang, Fu-Qiang1; Penuelas, Josep2,3; Sardans, Jordi2,3; Collins, Scott L.4; Yu, Kai-Liang5; Liu, Man-Qiong1; Pei, Jiu-Ying1; Ke, Wen-Bin1; Ye, Jian-Sheng1 |
| 刊名 | PLANT DIVERSITY
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 47期号:3页码:479-488 |
| 关键词 | Grassland Species richness Soil moisture Oxygen isotope Nitrogen enrichment |
| ISSN号 | 2096-2703 |
| DOI | 10.1016/j.pld.2025.02.006 |
| 产权排序 | 5 |
| 文献子类 | Article |
| 英文摘要 | The primary mechanism driving plant species loss after nitrogen (N) addition has been often hypothesized to be asymmetric competition for light, resulting from increased aboveground biomass. However, it is largely unknown whether plants' access to soil water at different depths would affect their responses, fate, and community composition under nitrogen addition. In a semiarid grassland exposed to 8-years of N addition, we measured plant aboveground biomass and diversity under four nitrogen addition rates (0, 4, 10, and 16 g m-2 year-1), and evaluated plant use of water across the soil profile using oxygen isotope. Aboveground biomass increased significantly, but diversity and shallow soil-water content decreased, with increasing rate of nitrogen addition. The water isotopic signature for both plant and soil water at the high N rate indicated that Leymus secalinus (a perennial grass) absorbed 7% more water from the subsurface soil layer (20-100 cm) compared to Elymus dahuricus (a perennial grass) and Artemisia annua (an annual forb). L. secalinus thus had a significantly larger biomass and was more abundant than the other two species at the high N rate but did not differ significantly from the other two species under ambient and the low N rate. Species that could use water from deeper soil layers became dominant when water in the shallow layers was insufficient to meet the demands of increased aboveground plant biomass. Our study highlights the importance of water across soil depths as key driver of plant growth and dominance in grasslands under N addition. Copyright (c) 2025 Kunming Institute of Botany, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| URL标识 | 查看原文 |
| WOS关键词 | USE EFFICIENCY ; LOESS PLATEAU ; USE PATTERNS ; DEPOSITION ; DIVERSITY ; ECOSYSTEM ; BIODIVERSITY ; STRATEGIES ; ABUNDANCE ; RESPONSES |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001515059800001 |
| 出版者 | KEAI PUBLISHING LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214557]  |
| 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 | Ye, Jian-Sheng |
| 作者单位 | 1.Lanzhou Univ, Coll Ecol, State Key Lab Herbage Improvement & Grassland Agro, Lanzhou 730000, Peoples R China; 2.UAB, CSIC, Global Ecol Unit, CREAF, Barcelona 08193, Spain; 3.CREAF, Barcelona 08193, Spain; 4.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 5.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 | Huang, Fu-Qiang,Penuelas, Josep,Sardans, Jordi,et al. Plant use of water across soil depths regulates species dominance under nitrogen addition[J]. PLANT DIVERSITY,2025,47(3):479-488. |
| APA | Huang, Fu-Qiang.,Penuelas, Josep.,Sardans, Jordi.,Collins, Scott L..,Yu, Kai-Liang.,...&Ye, Jian-Sheng.(2025).Plant use of water across soil depths regulates species dominance under nitrogen addition.PLANT DIVERSITY,47(3),479-488. |
| MLA | Huang, Fu-Qiang,et al."Plant use of water across soil depths regulates species dominance under nitrogen addition".PLANT DIVERSITY 47.3(2025):479-488. |
入库方式： OAI收割
来源：地理科学与资源研究所
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