Plant organic N uptake maintains species dominance under long-term warming
文献类型：期刊论文
| 作者 | Jiang, Lili; Wang, Shiping ; Zhe, Pang; Xu, Xingliang; Kardol, Paul; Li, Yaoming; Zhang, Lirong; Wang, Yanfen; Lei, Zhong; Lan, Zhichun
|
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2018 |
| 卷号 | 433 |
| 关键词 | Plant N uptake Alpine grassland The Tibet plateau Plant species coexistence |
| 英文摘要 | Background and aimsThere is ample experimental evidence for shifts in plant community composition under climate warming. To date, however, the underlying mechanisms driving these compositional shifts remain poorly understood. Methods The amount and form of nitrogen (N) available to plants are among the primary factors limiting productivity and plant coexistence in terrestrial ecosystems. We conducted a short-term N-15 tracer experiment in a ten-year warming and grazing experiment in an alpine grassland to investigate the effects of warming and grazing on plant uptake of NO3--N, NH4+-N, and glycine-N. Four dominant plant species (Kobresia humilis, Potentilla anseria, Elymus nutans, Poa annua) were selected. Results We found that 10-years of warming decreased plant uptake of inorganic N by up to 80% in all species. In contrast, warming increased the uptake of organic N in K. humilis, P. anseria, and E. nutans but not in P. annua. Results showed that plant relative biomass increased hyperbolically with the ratio of the plant species total uptake of available N and plant community uptake of available N. And a significant positive correlation between plant species uptake of soil glycine-N and the uptake of total available N. Conclusions The stable relative biomass of plant species is largely dependent on organic N uptake by plants. We conclude that plant organic N uptake maintains species dominance under long-term warming. |
| 源URL | [http://210.75.249.4/handle/363003/59931]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Jiang, Lili,Wang, Shiping,Zhe, Pang,et al. Plant organic N uptake maintains species dominance under long-term warming[J]. PLANT AND SOIL,2018,433. |
| APA | Jiang, Lili.,Wang, Shiping.,Zhe, Pang.,Xu, Xingliang.,Kardol, Paul.,...&Jones, Davey L..(2018).Plant organic N uptake maintains species dominance under long-term warming.PLANT AND SOIL,433. |
| MLA | Jiang, Lili,et al."Plant organic N uptake maintains species dominance under long-term warming".PLANT AND SOIL 433(2018). |
入库方式： OAI收割
来源：西北高原生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。