Simulated nitrogen deposition affects stoichiometry of multiple elements in resource-acquiring plant organs in a seasonally dry subtropical forest
文献类型：期刊论文
| 作者 | Kou, L; Chen, WW; Jiang, L; Dai, XQ; Fu, XL; Wang, HM; Li, SG |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018 |
| 卷号 | 624页码:611-620 |
| 关键词 | Biogeochemical cycles Elemental stoichiometry Foliage Absorptive roots Global change Nitrogen addition |
| ISSN号 | 0048-9697 |
| 文献子类 | Journal |
| 英文摘要 | Increase of anthropogenic atmospheric nitrogen (N) deposition markedly influences biogeochemical cycles of elements in a wide range of ecosystems. However, our knowledge of how N deposition affects stoichiometry of plants in forests experiencing regular seasonal droughts remains limited. Using a 3-year (2013-2015) N-manipulative experiment, we examined the stoichiometric responses of ten mineral elements, including the most limiting elements (N and P) to plant growth, base cations (K, Ca. and Mg), and trace metal cations (Mn, Zn, Cu, Al, and Fe) in resource-acquiring organs (foliage vs. absorptive roots) of Pinus ellioltii to N additions in both wet and dry seasons in a seasonally dry subtropical forest. Stoichiometric responses of both organs depended on rate of N addition (generally stronger under high rate) and season. N additions increased foliar [N] and decreased foliar [P] only in thy season and the relative changes in foliar N:P ratio were twice higher in dry than wet seasons, suggesting an aggravated P limitation in dry season. The stoichiometry of absorptive roots was more responsive to N additions than that of foliage, especially for the base cations. N additions increased [Mn] and decreased Fe:Mn ratio in both organs, indicating increased risk of Mn2+ toxicity to this tree species. Our results have implications for understanding the N-induced changes in nutrient limitation of forests influenced by seasonal drought, and highlight the contrasting stoichiometric responses of above- and below-ground resource-acquiring plant organs to N loading. (C) 2017 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| WOS关键词 | QUERCUS-ILEX FOREST ; PINE PLANTATION ; PHOSPHORUS LIMITATION ; BRANCH ORDER ; TERRESTRIAL ECOSYSTEMS ; NUTRIENT RESORPTION ; TROPICAL FOREST ; GLOBAL CHANGE ; FRESH-WATER ; FINE ROOTS |
| 语种 | 英语 |
| WOS记录号 | WOS:000426355900061 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43896]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 作者单位 | [Kou, Liang; Chen, Weiwei; Jiang, Lei; Dai, Xiaoqin; Fu, Xiaoli; Wang, Huimin; Li, Shenggong] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; [Chen, Weiwei; Jiang, Lei; Wang, Huimin; Li, Shenggong] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; [Wang, Huimin] Jiangxi Prov Key Lab Ecosyst Proc & Informat, Taihe 343725, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kou, L,Chen, WW,Jiang, L,et al. Simulated nitrogen deposition affects stoichiometry of multiple elements in resource-acquiring plant organs in a seasonally dry subtropical forest[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,624:611-620. |
| APA | Kou, L.,Chen, WW.,Jiang, L.,Dai, XQ.,Fu, XL.,...&Li, SG.(2018).Simulated nitrogen deposition affects stoichiometry of multiple elements in resource-acquiring plant organs in a seasonally dry subtropical forest.SCIENCE OF THE TOTAL ENVIRONMENT,624,611-620. |
| MLA | Kou, L,et al."Simulated nitrogen deposition affects stoichiometry of multiple elements in resource-acquiring plant organs in a seasonally dry subtropical forest".SCIENCE OF THE TOTAL ENVIRONMENT 624(2018):611-620. |
入库方式： OAI收割
来源：地理科学与资源研究所
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