| Grazing modifies inorganic and organic nitrogen uptake by coexisting plant species in alpine grassland | |
| Jiang, LL (Jiang, Lili)1; Wang, SP (Wang, Shiping)1,2; Pang, Z (Pang, Zhe)4; Wang, CS (Wang, Changshun)1; Kardol, P (Kardol, Paul)5; Zhou, XQ (Zhou, Xiaoqi)6; Rui, YC (Rui, Yichao)7; Lan, ZC (Lan, Zhi Chun)8; Wang, YF (Wang, Yanfen)4; Xu, XL (Xu, Xingliang)3; Jiang, LL | |
| Source Publication | BIOLOGY AND FERTILITY OF SOILS
 |
| 2016 | |
| Volume | 52Issue:2Pages:211-221 |
| DOI | 10.1007/s00374-015-1069-1 |
| Abstract | To study how grazing affects the uptake of inorganic and organic N forms, three focal plant species (i.e., the graminoid species Kobresia pygmaea, which decreases with grazing, and the forbs Potentilla bifurca and Potentilla multifida, which increase with grazing) were selected in ungrazed and grazed plots in an alpine meadow on the Tibetan Plateau. Three times during the growing season (i.e., June, July, and September), these plots were injected with N-15-labeled NO3--N, NH4+-N, or glycine-N, or with only water as a control. Two hours after N-15 injection, exchangeable NH4+-N, glycine-N, and NO3--N as well as plant and soil samples were collected and analyzed for N-15/N-14 and total N content. Our result showed that all three plant species took up glycine-N, but uptake of inorganic N was generally predominant. The graminoid K. pygmaea took up all three N forms equally in June but preferred NO3--N in July (particularly under grazing) and exchangeable NH4+-N in September. The forbs P. bifurca and P. multifida preferentially took up exchangeable NH4+-N in July (particularly under grazing), while NO3--N was the dominant form of N uptake in September. P. bifurca generally preferred exchangeable NH4+-N, but preference shifted toward NO3--N under grazing in June. P. multifida preferred glycine-N in ungrazed plots and shifted its preference to NO3--N under grazing in June. In conclusion, the three plant species showed niche partitioning for uptake of three forms of N across the season, which was modified by grazing. These findings indicate that plant N uptake patterns should be considered for better understanding the mechanisms of grazing effects on plant diversity and species coexistence. |
| Subject Area | 普通生物学 |
| WOS ID | WOS:000373441100008 |
| Language | 英语 |
| Indexed By | SCI |
| Keyword | Tibetan Plateau Inner-mongolia Soil Microbes Amino-acids Availability Mineralization Responses Glycine Meadow China |
| Cooperation Status | 国际 |
| Department | 生态 |
| Subtype | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itpcas.ac.cn/handle/131C11/7762 |
| Collection | 图书馆 |
| Corresponding Author | Jiang, LL |
| Affiliation | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China 5.Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden 6.Griffith Univ, Environm Futures Res Inst, Brisbane, Qld 4111, Australia 7.Univ Western Australia, Sch Earth & Environm, Soil Biol & Mol Ecol Lab, Crawley, WA 6009, Australia 8.Nanchang Univ, Inst Life Sci, Ctr Watershed Ecol, Nanchang 330031, Peoples R China |
| Recommended Citation GB/T 7714 | Jiang, LL ,Wang, SP ,Pang, Z ,et al. Grazing modifies inorganic and organic nitrogen uptake by coexisting plant species in alpine grassland[J]. BIOLOGY AND FERTILITY OF SOILS,2016,52(2):211-221. |
| APA | Jiang, LL .,Wang, SP .,Pang, Z .,Wang, CS .,Kardol, P .,...&Jiang, LL.(2016).Grazing modifies inorganic and organic nitrogen uptake by coexisting plant species in alpine grassland.BIOLOGY AND FERTILITY OF SOILS,52(2),211-221. |
| MLA | Jiang, LL ,et al."Grazing modifies inorganic and organic nitrogen uptake by coexisting plant species in alpine grassland".BIOLOGY AND FERTILITY OF SOILS 52.2(2016):211-221. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| V.52(2) 211-221 2016（1374KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment