Limited inorganic N niche partitioning by nine alpine plant species after long-term nitrogen addition
文献类型：期刊论文
| 作者 | Zhang, Li4 ; Zhu, Tongbin3; Liu, Xiang4; Nie, Ming4; Xu, Xingliang1; Zhou, Shurong2,4
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2020-05-20 |
| 卷号 | 718页码:9 |
| 关键词 | Chemical N partitioning Competitive exclusion Habitat filtering N uptake strategy NH4NO3 addition Tibetan alpine meadow |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.137270 |
| 通讯作者 | Zhou, Shurong(zhshrong@fudan.edu.cn) |
| 英文摘要 | 1. Nitrogen (N) is a major nutrient limiting plant growth in most terrestrial ecosystems. Both niche partitioning and fitness equalizing mechanisms related to N acquisition have been proposed to explain the maintenance of biodiversity and ecosystem functioning. However, their relative importance remains controversial and unclear, especially in worldwide terrestrial ecosystems increasingly threatened by N deposition. 2. We added NH4NO3 at four levels over 7 years in an alpine meadow on Qinghai-Tibetan Plateau to simulate the effects of N deposition. Nine species that all occurred along an N addition gradient were selected for in-situ N-15 labeling experiment to quantify their uptake of ammonium verse nitrate. 3. Plants absorbed more ammonium and nitrate with increased N addition. We found limited inorganic N niche partitioning along the N addition gradient. Instead, species tended to prefer the most abundant form of inorganic N in soil, i.e. ammonium. Of all possible linear mixed effects models constructed to explain variation in either ammonium or nitrate uptake, the most parsimonious one included soil available N. That means plant' N uptake is influenced by habitat qualities, instead of the amount of added N itself. 4. Our findings suggest that inorganic N niche partitioning may play limited role in the maintenance of high diversity in this alpine meadow. Instead, species coexistence might be promoted by minimizing their fitness differences through preferring the most abundant form of inorganic N in the soil. This provides important insights into species coexistence under future N addition in Tibetan alpine meadows. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | ORGANIC NITROGEN ; SOIL-NITROGEN ; ACQUISITION ; PLASTICITY ; COMPETITION ; MECHANISMS ; LIMITATION ; DIVERSITY ; MICROORGANISMS ; PRODUCTIVITY |
| 资助项目 | National Natural Science Foundation of China[31830009] ; National Natural Science Foundation of China[31770518] ; National Natural Science Foundation of China[41877089] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000526029000080 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/133849]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhou, Shurong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China 2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Chinese Acad Geol Sci, MLR & Guangxi, Karst Dynam Lab, Inst Karst Geol, Guilin 541004, Peoples R China 4.Fudan Univ, Sch Life Sci, SIEC, Minist Educ Key Lab Biodivers Sci & Ecol Engn,Coa, 2005 Songhu Rd, Shanghai 200438, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Li,Zhu, Tongbin,Liu, Xiang,et al. Limited inorganic N niche partitioning by nine alpine plant species after long-term nitrogen addition[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,718:9. |
| APA | Zhang, Li,Zhu, Tongbin,Liu, Xiang,Nie, Ming,Xu, Xingliang,&Zhou, Shurong.(2020).Limited inorganic N niche partitioning by nine alpine plant species after long-term nitrogen addition.SCIENCE OF THE TOTAL ENVIRONMENT,718,9. |
| MLA | Zhang, Li,et al."Limited inorganic N niche partitioning by nine alpine plant species after long-term nitrogen addition".SCIENCE OF THE TOTAL ENVIRONMENT 718(2020):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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