Nutrient limitation of alpine plants: Implications from leaf N : P stoichiometry and leaf delta N-15
文献类型：期刊论文
| 作者 | Xu, Xingliang1; Wanek, Wolfgang2; Zhou, Caiping1; Richter, Andreas2; Song, Minghua1; Cao, Guangmin3; Ouyang, Hua1; Kuzyakov, Yakov1,4,5 |
| 刊名 | journal of plant nutrition and soil science
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 177期号:3页码:378-387 |
| ISSN号 | 1436-8730 |
| 关键词 | ammonium plant functional groups nitrate nitrogen cycling alpine meadow |
| 中文摘要 | nitrogen (n) deposition can affect grassland ecosystems by altering biomass production, plant species composition and abundance. therefore, a better understanding of the response of dominant plant species to n input is a prerequisite for accurate prediction of future changes and interactions within plant communities. we evaluated the response of seven dominant plant species on the tibetan plateau to n input at two levels: individual species and plant functional group. this was achieved by assessing leaf n : p stoichiometry, leaf delta n-15 and biomass production for the plant functional groups. seven dominant plant species-three legumes, two forbs, one grass, one sedge-were analyzed for n, p, and delta n-15 2 years after fertilization with one of the three n forms: no3-, nh4+, or nh4no3 at four application rates (0, 7.5, 30, and 150 kg n ha(-1) y(-1)). on the basis of biomass production and leaf n : p ratios, we concluded that grasses were limited by available n or co-limited by available p. unlike for grasses, leaf n : p and biomass production were not suitable indicators of n limitation for legumes and forbs in alpine meadows. the poor performance of legumes under high n fertilization was mainly due to strong competition with grasses. the total above-ground biomass was not increased by n fertilization. however, species composition shifted to more productive grasses. a significant negative correlation between leaf n : p and leaf delta n-15 indicated that the two forbs gentiana straminea and saussurea superba switched from n deficiency to p limitation (e. g., n excess) due to n fertilization. these findings imply that alpine meadows will be more dominated by grasses under increased atmospheric n deposition. |
| 英文摘要 | nitrogen (n) deposition can affect grassland ecosystems by altering biomass production, plant species composition and abundance. therefore, a better understanding of the response of dominant plant species to n input is a prerequisite for accurate prediction of future changes and interactions within plant communities. we evaluated the response of seven dominant plant species on the tibetan plateau to n input at two levels: individual species and plant functional group. this was achieved by assessing leaf n : p stoichiometry, leaf delta n-15 and biomass production for the plant functional groups. seven dominant plant species-three legumes, two forbs, one grass, one sedge-were analyzed for n, p, and delta n-15 2 years after fertilization with one of the three n forms: no3-, nh4+, or nh4no3 at four application rates (0, 7.5, 30, and 150 kg n ha(-1) y(-1)). on the basis of biomass production and leaf n : p ratios, we concluded that grasses were limited by available n or co-limited by available p. unlike for grasses, leaf n : p and biomass production were not suitable indicators of n limitation for legumes and forbs in alpine meadows. the poor performance of legumes under high n fertilization was mainly due to strong competition with grasses. the total above-ground biomass was not increased by n fertilization. however, species composition shifted to more productive grasses. a significant negative correlation between leaf n : p and leaf delta n-15 indicated that the two forbs gentiana straminea and saussurea superba switched from n deficiency to p limitation (e. g., n excess) due to n fertilization. these findings imply that alpine meadows will be more dominated by grasses under increased atmospheric n deposition. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 类目[WOS] | agronomy ; plant sciences ; soil science |
| 研究领域[WOS] | agriculture ; plant sciences |
| 关键词[WOS] | phosphorus limitation ; terrestrial ecosystems ; organic nitrogen ; meadow ; ammonium ; nitrate ; n-15 ; nutrition ; patterns ; plateau |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000337506600008 |
| 公开日期 | 2014-12-19 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/4225]  |
| 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, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Vienna, Dept Microbiol & Ecosyst Sci, A-1090 Vienna, Austria 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810008, Peoples R China 4.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany 5.Univ Gottingen, Dept Agr Soil Sci, D-37077 Gottingen, Germany |
| 推荐引用方式 GB/T 7714 | Xu, Xingliang,Wanek, Wolfgang,Zhou, Caiping,et al. Nutrient limitation of alpine plants: Implications from leaf N : P stoichiometry and leaf delta N-15[J]. journal of plant nutrition and soil science,2014,177(3):378-387. |
| APA | Xu, Xingliang.,Wanek, Wolfgang.,Zhou, Caiping.,Richter, Andreas.,Song, Minghua.,...&Kuzyakov, Yakov.(2014).Nutrient limitation of alpine plants: Implications from leaf N : P stoichiometry and leaf delta N-15.journal of plant nutrition and soil science,177(3),378-387. |
| MLA | Xu, Xingliang,et al."Nutrient limitation of alpine plants: Implications from leaf N : P stoichiometry and leaf delta N-15".journal of plant nutrition and soil science 177.3(2014):378-387. |
入库方式： OAI收割
来源：西北高原生物研究所
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