Nutrient resorption of coexistence species in alpine meadow of the Qinghai-Tibetan Plateau explains plant adaptation to nutrient-poor environment
文献类型：期刊论文
| 作者 | Jiang, Chunming1,2; Yu, Guirui2; Li, Yingnian3; Cao, Guangmin3; Yang, ZhaoPing4; Sheng, Wenping2; Yu, Wantai1 |
| 刊名 | ecological engineering
 |
| 出版日期 | 2012-07-01 |
| 卷号 | 44页码:1-9 |
| 关键词 | Leaf nutrient concentration Nutrient resorption Allometric equations Alpine meadow Qinghai-Tibetan Plateau |
| ISSN号 | 0925-8574 |
| 中文摘要 | nitrogen (n) and phosphorus (p) resorption from senescing organs are important plant nutrient conservation mechanisms. however, whether nutrient resorption can indicate plant adaptation to nutrient-poor environment remains a controversy. we quantified nutrient resorption efficiency of major species in an alpine meadow of the qinghai-tibetan plateau. n and p resorption for these species averaged 65.2% and 67.4%, respectively, which was at the high end of the values of global scale. among three life forms, sedges contained least n and p and had highest resorption efficiency, indicating sedges had a competitive advantage over grasses and forbs in this nutrient-poor environment. this result was consistent with the fact that sedge was the typically dominant plant functional group in qinghai-tibetan plateau. by fitting the allometric equations ([ nutrient](senescent) = a([nutrient](live))(b)) separately for n and p, we found much smaller b (n) than b (p), which suggested that relative to the resorption from senescent leaves, the cost of n uptake from soils increased more quickly than that of p as resource availability decreased. this phenomenon was contrary to the corresponding n and p acquisition pattern of the tropical ecosystem, which matched the large geographical gradients of n vs. p limitation (n for alpine ecosystem, while p for tropical ecosystem). this study suggests that surveying leaf nutrient concentration and resorption could provide indicative information about plant adaptation to nutrient-poor soil within and across ecosystems. our finding offers insights to nutrient management and ecosystem restoration in nutrient-poor environment and delivers information for upcoming meta-studies and model simulation of global leaf nutrient resorption. crown copyright (c) 2012 published by elsevier b.v. all rights reserved. |
| 英文摘要 | nitrogen (n) and phosphorus (p) resorption from senescing organs are important plant nutrient conservation mechanisms. however, whether nutrient resorption can indicate plant adaptation to nutrient-poor environment remains a controversy. we quantified nutrient resorption efficiency of major species in an alpine meadow of the qinghai-tibetan plateau. n and p resorption for these species averaged 65.2% and 67.4%, respectively, which was at the high end of the values of global scale. among three life forms, sedges contained least n and p and had highest resorption efficiency, indicating sedges had a competitive advantage over grasses and forbs in this nutrient-poor environment. this result was consistent with the fact that sedge was the typically dominant plant functional group in qinghai-tibetan plateau. by fitting the allometric equations ([ nutrient](senescent) = a([nutrient](live))(b)) separately for n and p, we found much smaller b (n) than b (p), which suggested that relative to the resorption from senescent leaves, the cost of n uptake from soils increased more quickly than that of p as resource availability decreased. this phenomenon was contrary to the corresponding n and p acquisition pattern of the tropical ecosystem, which matched the large geographical gradients of n vs. p limitation (n for alpine ecosystem, while p for tropical ecosystem). this study suggests that surveying leaf nutrient concentration and resorption could provide indicative information about plant adaptation to nutrient-poor soil within and across ecosystems. our finding offers insights to nutrient management and ecosystem restoration in nutrient-poor environment and delivers information for upcoming meta-studies and model simulation of global leaf nutrient resorption. crown copyright (c) 2012 published by elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; life sciences & biomedicine ; technology |
| 类目[WOS] | ecology ; engineering, environmental ; environmental sciences |
| 研究领域[WOS] | environmental sciences & ecology ; engineering |
| 关键词[WOS] | organic nitrogen ; phosphorus stoichiometry ; leaf nitrogen ; functional-significance ; terrestrial ecosystems ; mineral-nutrition ; grassland biomes ; scale patterns ; arctic plants ; wild plants |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000305443100001 |
| 公开日期 | 2013-03-15 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/3648]  |
| 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 Appl Ecol, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Synth Res Ctr Chinese Ecosyst Res Network, Beijing 100101, Peoples R China 3.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810008, Peoples R China 4.Minist Environm Protect, Nanjing Inst Environm Sci, Nanjing 210042, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Chunming,Yu, Guirui,Li, Yingnian,et al. Nutrient resorption of coexistence species in alpine meadow of the Qinghai-Tibetan Plateau explains plant adaptation to nutrient-poor environment[J]. ecological engineering,2012,44:1-9. |
| APA | Jiang, Chunming.,Yu, Guirui.,Li, Yingnian.,Cao, Guangmin.,Yang, ZhaoPing.,...&Yu, Wantai.(2012).Nutrient resorption of coexistence species in alpine meadow of the Qinghai-Tibetan Plateau explains plant adaptation to nutrient-poor environment.ecological engineering,44,1-9. |
| MLA | Jiang, Chunming,et al."Nutrient resorption of coexistence species in alpine meadow of the Qinghai-Tibetan Plateau explains plant adaptation to nutrient-poor environment".ecological engineering 44(2012):1-9. |
入库方式： OAI收割
来源：西北高原生物研究所
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