A new isotope framework to decipher leaf-root nitrogen allocation and assimilation among plants in a tropical invaded ecosystem
文献类型：期刊论文
| 作者 | Hu, Chao-Chen; Liu, Xue-Yan; Yan, Ya-Xin; Lei, Yan-Bao ; Tan, Yun-Hong; Liu, Cong-Qiang
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022 |
| 卷号 | 806期号:12页码:- |
| 关键词 | Exotic plant invasion Native plants Plant co-existence Nitrogen allocation Nitrogen assimilation Nitrogen isotopes |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2021.151203 |
| 英文摘要 | Exotic plant invasion is an urgent issue occurring in the biosphere, which can be stimulated by environmental nitrogen (N) loading. However, the allocation and assimilation of soil N sources between leaves and roots remain undear for plants in invaded ecosystems, which hampers the understanding of mechanisms behind the expansion of invasive plants and the co-existence of native plants. This work established a new framework to use N concentrations and isotopes of soils, roots, and leaves to quantitatively decipher infra-plant N allocation and assimilation among plant species under no invasion and under the invasion of Chromolaena odorata and Ageratina adenophora in a tropical ecosystem of SW China. We found that the assimilation of N derived from both soil ammonium (NH4+) and nitrate (NO3-) were higher in leaves than in roots for invasive plants, leading to higher leaf N levels than native plants. Compared with the same species under no invasion, most native plants under invasion showed higher N concentrations and NH4+ assimilations in both leaves and roots, and increases in leaf N were higher than in root N for native plants under invasion. These results inform that preferential N allocation, dominated by NH4+-derived N. to leaves over roots as an important N-use strategy for plant invasion and co-existence in the studied tropical ecosystem. (C) 2021 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000740225300007 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/13048]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 |
| 作者单位 | 1.Yan, Ya-Xin 2.Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 3.Tianjin Univ, Sch Earth Syst Sci, Tianjin 300072, Peoples R China 4.Liu, Xue-Yan 5.[Hu, Chao-Chen 6.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Chao-Chen,Liu, Xue-Yan,Yan, Ya-Xin,et al. A new isotope framework to decipher leaf-root nitrogen allocation and assimilation among plants in a tropical invaded ecosystem[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,806(12):-. |
| APA | Hu, Chao-Chen,Liu, Xue-Yan,Yan, Ya-Xin,Lei, Yan-Bao,Tan, Yun-Hong,&Liu, Cong-Qiang.(2022).A new isotope framework to decipher leaf-root nitrogen allocation and assimilation among plants in a tropical invaded ecosystem.SCIENCE OF THE TOTAL ENVIRONMENT,806(12),-. |
| MLA | Hu, Chao-Chen,et al."A new isotope framework to decipher leaf-root nitrogen allocation and assimilation among plants in a tropical invaded ecosystem".SCIENCE OF THE TOTAL ENVIRONMENT 806.12(2022):-. |
入库方式： OAI收割
来源：西双版纳热带植物园
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