Three Tibetan grassland plant species tend to partition niches with limited plasticity in nitrogen use
文献类型：期刊论文
| 作者 | Zhang, Li ; Pang, Rui; Xu, Xingliang; Song, Minghua; Li, Yikang; Zhou, Huakun; Cui, Xiaoyong; Wang, Yanfen; Ouyang, Hua
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| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2019 |
| 卷号 | 441 |
| 关键词 | Niche complementarity Kobresia humilis Stipa aliena Saussurea superba N-15 Resource competition |
| 英文摘要 | Aims Niche complementarity theory explains how species coexist by using different resources. Two pathways to partition resource have been demonstrated: classical niche differentiation and plasticity in resource use. We aimed to determine N-uptake patterns in three Tibetan Plateau grassland species, and to examine how N-partitioning is driven by neighbor interactions. Methods We conducted a transplantation experiment using ten plant communities, each comprising a different combination of Kobresia humilis, Stipa aliena, and Saussurea superba. Soil was sprayed uniformly with a mixture of (NH4)(2)SO4, KNO3, and glycine (C2H5NO2) (1:1:1 by mass of N, each containing one form of N-15) after growing for 45 days. Results Across three species, the N-uptake pattern was NO3- > NH4+ > glycine (NO3-: 58.47%; NH4+: 26.91%; glycine: 14.62%). Neighbor presence had species-specific effects on N-15 recovery. Kobresia humilis took up more N-15-NO3- when it was in competition with other species, whereas Stipa aliena and Saussurea superba took up more N-15-NH4+ and N-15-glycine, respectively. Conclusions Plasticity in N resource utilization of the three species was limited. The species competed for N resources proportionally to the availability of these sources, and tended to partition niches. These findings provide important insights into how plant species grow together in alpine grasslands. |
| 源URL | [http://210.75.249.4/handle/363003/59729]  |
| 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 | Zhang, Li,Pang, Rui,Xu, Xingliang,et al. Three Tibetan grassland plant species tend to partition niches with limited plasticity in nitrogen use[J]. PLANT AND SOIL,2019,441. |
| APA | Zhang, Li.,Pang, Rui.,Xu, Xingliang.,Song, Minghua.,Li, Yikang.,...&Ouyang, Hua.(2019).Three Tibetan grassland plant species tend to partition niches with limited plasticity in nitrogen use.PLANT AND SOIL,441. |
| MLA | Zhang, Li,et al."Three Tibetan grassland plant species tend to partition niches with limited plasticity in nitrogen use".PLANT AND SOIL 441(2019). |
入库方式： OAI收割
来源：西北高原生物研究所
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