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Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow
文献类型：期刊论文
| 作者 | Xu, Xingliang1; Ouyang, Hua1; Richter, Andreas2; Wanek, Wolfgang2; Cao, Guangmin3; Kuzyakov, Yakov4 |
| 刊名 | journal of ecology
 |
| 出版日期 | 2011-03-01 |
| 卷号 | 99期号:2页码:563-571 |
| 关键词 | (15)N tracer alpine Kobresia meadow ammonium inorganic N nitrate plant-microbe competition plant-soil (below-ground) interactions rhizosphere interactions spatio-temporal pattern |
| ISSN号 | 0022-0477 |
| 中文摘要 | 1. plant microbe competition for available nitrogen (n) has been suggested to be an important mechanism controlling n limitation of plants in a variety of ecosystems. however, spatio-temporal patterns of competition between plants and microbes for soil n remain unclear. 2. short-term (15)n tracer experiments were conducted during a growing season (july, august and september) in an alpine meadow on the tibetan plateau to unravel spatio-temporal patterns of plant microbe competition for nh(4)(+) and no(3)(-). 3. alpine plants were poorer competitors than soil microorganisms for inorganic n in july compared with august and september. occupation of soil volume by roots and root density (high in august and september) played a greater role in plant microbe competition than air temperature or precipitation (high in july). 4. in topsoils (0-5 cm, highest root density), alpine plants effectively competed with soil microorganisms for n and showed a preference for (15)no(3)(-), while soil microorganisms that preferentially took up (15)nh(4)(+) out-competed plants below 5 cm soil depth (lower root density). competition between plants and soil microorganisms for inorganic n strongly depended on root density (p < 0.0001, r(2) = 0.93, exponential decay model). 5. synthesis. plant-microbe competition for inorganic n showed a clear spatio-temporal pattern in alpine meadows depending on (i) root density and therefore soil depth, (ii) inorganic n form, and (iii) different periods during the growing season. these findings have important implications for our understanding of above-ground below-ground interactions and plant-microbial competition for available n. |
| 英文摘要 | 1. plant microbe competition for available nitrogen (n) has been suggested to be an important mechanism controlling n limitation of plants in a variety of ecosystems. however, spatio-temporal patterns of competition between plants and microbes for soil n remain unclear. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 类目[WOS] | plant sciences ; ecology |
| 研究领域[WOS] | plant sciences ; environmental sciences & ecology |
| 关键词[WOS] | arctic salt-marsh ; soil microbes ; organic-nitrogen ; amino-acids ; seasonal-variation ; rhizosphere microorganisms ; vertical-distribution ; temperate grasslands ; mineral-nutrition ; wild plants |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000287785300022 |
| 公开日期 | 2011-12-13 |
| 源URL | [http://ir.nwipb.ac.cn//handle/363003/1578]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modelling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Vienna, Dept Chem Ecol & Ecosyst Res, A-1090 Vienna, Austria 3.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810008, Peoples R China 4.Univ Bayreuth, Dept Agroecosyst Res, D-95440 Bayreuth, Germany |
| 推荐引用方式 GB/T 7714 | Xu, Xingliang,Ouyang, Hua,Richter, Andreas,et al. Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow[J]. journal of ecology,2011,99(2):563-571. |
| APA | Xu, Xingliang,Ouyang, Hua,Richter, Andreas,Wanek, Wolfgang,Cao, Guangmin,&Kuzyakov, Yakov.(2011).Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow.journal of ecology,99(2),563-571. |
| MLA | Xu, Xingliang,et al."Spatio-temporal variations determine plant-microbe competition for inorganic nitrogen in an alpine meadow".journal of ecology 99.2(2011):563-571. |
入库方式： OAI收割
来源：西北高原生物研究所
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