Causes for the Unimodal Pattern of Leaf Carbon Isotope Composition in Abies faxoniana Trees Growing in a Natural Forest along an Altitudinal Gradient
文献类型：期刊论文
| 作者 | Zhao Hong-xia ; Duan Bao-li; Lei Yan-bao
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2015 |
| 卷号 | 12期号:1页码:39-48 |
| 关键词 | Abies faxoniana Age Altitude Carbon isotope ratio Nitrogen content |
| ISSN号 | 1672-6316 |
| 通讯作者 | LEI Yan-bao |
| 英文摘要 | Leaf morphological and physiological traits of Abies faxoniana growing in a natural forest along an altitudinal gradient were measured with the aim to identify the central mechanism for the marked variation in foliar delta C-13 determined by an isotope ratio mass spectrometer. There is a unimodal pattern of plant functional traits in these temperate and semi-humid areas. Stomatal parameters, specific leaf area, and C/N ratio increased, whereas C, N and delta C-13 values decreased with increasing altitude below 3000 m a.s.l.. In contrast, they exhibited opposite trends above 3000 m a.s.l.. Our results demonstrated that high-altitude plants achieve higher water use efficiency (WUE) at the expense of decreasing nitrogen use efficiency (NUE), whereas plants at 3000 m can maintain a relatively higher NUE but a lower WUE. Such intra-specific differences in the trade-off between NUE and WUE may partially explain the altitudinal distribution of the plants in relation to moisture and nutrient availability. Our results clearly indicate that the functional relations between nutritional status and the structure of leaves are responsible for the altitudinal variations associated with delta C-13. The pivotal role of specific leaf area in regulating plant adaptive responses provides a potential physiological mechanism for the observed growth advantage of populations occupying the medium altitude. These adaptive responses to altitudinal gradients showed that an altitude of approximately 3000 m a.s.l. is the optimum distribution zone for A. faxoniana, allowing the most vigorous growth and metabolism. These results improve our understanding of the various roles of environmental and biotic variables upon delta C-13 dynamics and provide useful information for subalpine coniferous forest management. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | WATER-USE EFFICIENCY ; PHYSIOLOGICAL-RESPONSES ; PHENOTYPIC PLASTICITY ; NITROGEN ; DISCRIMINATION ; PLANTS ; GROWTH ; CHINA ; ADAPTATION ; MOUNTAINS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000348918000004 |
| 公开日期 | 2015-01-16 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7690]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.1 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao Hong-xia,Duan Bao-li,Lei Yan-bao. Causes for the Unimodal Pattern of Leaf Carbon Isotope Composition in Abies faxoniana Trees Growing in a Natural Forest along an Altitudinal Gradient[J]. JOURNAL OF MOUNTAIN SCIENCE,2015,12(1):39-48. |
| APA | Zhao Hong-xia,Duan Bao-li,&Lei Yan-bao.(2015).Causes for the Unimodal Pattern of Leaf Carbon Isotope Composition in Abies faxoniana Trees Growing in a Natural Forest along an Altitudinal Gradient.JOURNAL OF MOUNTAIN SCIENCE,12(1),39-48. |
| MLA | Zhao Hong-xia,et al."Causes for the Unimodal Pattern of Leaf Carbon Isotope Composition in Abies faxoniana Trees Growing in a Natural Forest along an Altitudinal Gradient".JOURNAL OF MOUNTAIN SCIENCE 12.1(2015):39-48. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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