Influence of Cushion Plant Androsace tapete on Nitrogen Uptake Strategies of Associated Alpine Plants
文献类型：期刊论文
| 作者 | Xing, Shuo3,4; He, Yong-Tao1,3; Shi, Pei-Li1,3; Xu, Xing-Liang1,2 |
| 刊名 | PLANTS-BASEL
 |
| 出版日期 | 2025-10-21 |
| 卷号 | 14期号:20页码:3232 |
| 关键词 | Androsace tapete facilitation N-15 labeling N uptake pattern Qinghai-Tibet Plateau |
| ISSN号 | 2223-7747 |
| DOI | 10.3390/plants14203232 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | In alpine ecosystems, plant growth is often constrained by multiple environmental factors, especially the infertile soils with lower temperature that decelerate the rate of nutrient turnover, thus leading to a diminished availability of nutrients in the soil, notably nitrogen (N), and its different forms, which is a pivotal factor for limiting plant growth and species coexistence in these alpine areas. Androsace tapete (A. tapete) is an endemic species and the most widely distributed cushion plant on the Qinghai-Tibet Plateau (QTP). Its positive interactions can facilitate other associated plants to deal with severe environmental conditions in the alpine grassland ecosystem. The change in soil nutrient availability is one of the main positive interactions, but little is known about how A. tapete changes soil nutrient availability and affects the N uptake pattern of associated plants. This study investigated the N utilization patterns of three associated plant species -Carex atrofusca (C. atrofusca), Cyananthus incanus (C. incanus), and Potentilla saundersiana (P. saundersiana)- growing inside the cushion area A. tapete (CA) and the ambient grassland without cushion plants (CK), using a N-15 labeling method to clarify the effect of A. tapete on the N uptake strategies with NH4+, NO3-, and organic N of its associated species. The results showed the following: (1) compared to CK, the soil total C, total N, and available NH4+ contents under the A. tapete showed a significant 47.82%, 40.96%, and 47.33% increase, respectively; (2) A. tapete showed a stronger preference for NH4+ (>80%), whereas the associated species in CK exhibited a more balanced uptake, deriving 39.29-55.59% of N from NO3-, 25.72-44.00% from NH4+, and 16.15-18.69% from glycine. (3) The three associated plants possessing A. tapete significantly reduced their uptake of glycine by 9.76%, 12.55%, and 7.15%, respectively, while the absorption of NH4+ by C. atrofusca and C. incanus increased by 18.46% and 36.11%; meanwhile, NO3- uptake decreased by 8.70% in C. atrofusca and 23.55% in C. incanus. These findings indicated that the A. tapete can change the N uptake pattern of the associated plants growing inside the cushion body, such as enhancing the absorption of inorganic N and decreasing the organic N. This adaptive strategy of the associated plants with cushion plant enables them to counteract the N-limited conditions prevalent in alpine environments, and, as a consequence, facilitates their growth and promotes local plant community diversity in the alpine environment. |
| URL标识 | 查看原文 |
| WOS关键词 | SOIL ; MINERALIZATION ; ORGANIZATION ; COMMUNITIES ; GRASSLAND ; INCREASE ; IMPACTS ; BIOMASS ; ANDES |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001603699900001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217776]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 通讯作者 | He, Yong-Tao |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Xing, Shuo,He, Yong-Tao,Shi, Pei-Li,et al. Influence of Cushion Plant Androsace tapete on Nitrogen Uptake Strategies of Associated Alpine Plants[J]. PLANTS-BASEL,2025,14(20):3232. |
| APA | Xing, Shuo,He, Yong-Tao,Shi, Pei-Li,&Xu, Xing-Liang.(2025).Influence of Cushion Plant Androsace tapete on Nitrogen Uptake Strategies of Associated Alpine Plants.PLANTS-BASEL,14(20),3232. |
| MLA | Xing, Shuo,et al."Influence of Cushion Plant Androsace tapete on Nitrogen Uptake Strategies of Associated Alpine Plants".PLANTS-BASEL 14.20(2025):3232. |
入库方式： OAI收割
来源：地理科学与资源研究所
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