Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau
文献类型：期刊论文
| 作者 | Li, XX (Li, Xiaoxia)1; Liang, E (Liang, Eryuan)1,2; Gricar, J (Gricar, Jozica)3; Rossi, S (Rossi, Sergio)4,5; Cufar, K (Cufar, Katarina)6; Ellison, AM (Ellison, Aaron M.)7; Liang, E |
| 刊名 | SCIENCE BULLETIN
 |
| 出版日期 | 2017 |
| 卷号 | 62期号:11页码:804-812 |
| 关键词 | SPRUCE PICEA-ABIES GROWTH-LIMITATION CAMBIAL ACTIVITY NORWAY SPRUCE SCOTS PINE ALTITUDINAL GRADIENT CARBON STORAGE GROWING-SEASON BLACK SPRUCE TREE GROWTH |
| DOI | 10.1016/j.scib.2017.04.025 |
| 文献子类 | Article |
| 英文摘要 | Physiological and ecological mechanisms that define treelines are still debated. It has been suggested that the absence of trees above the treeline is caused by low temperatures that limit growth. Thus, we hypothesized that there is a critical minimum temperature (CTmin) preventing xylogenesis at treeline. We tested this hypothesis by examining weekly xylogenesis across three and four growing seasons in two natural Smith fir (Abies georgei var. smithii) treeline sites on the southeastern Tibetan Plateau. Despite differences in the timing of cell differentiation among years, minimum air temperature was the dominant climatic variable associated with xylem growth; the critical minimum temperature (CTmin) for the onset and end of xylogenesis occurred at 0.7 +/- 0.4 degrees C. A process-based modelling chronology of tree-ring formation using this CTmin was consistent with actual tree-ring data. This extremely low CTmin permits Smith fir growing at treeline to complete annual xylem production and maturation and provides both support and a mechanism for treeline formation. (C) 2017 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved. |
| 学科主题 | 自然地理学 |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000405584900014 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8379]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Liang, E |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China. 2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. 3.Slovenian Forestry Inst, Dept Yield & Silviculture, Vecna Pot 2, SI-1000 Ljubljana, Slovenia. 4.Univ Quebec Chicoutimi, Dept Sci Fondamentales, 555 Blvd Univ, Chicoutimi, PQ G7H 2B1, Canada. 5.Chinese Acad Sci, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China. 6.Univ Ljubljana, Biotech Fac, Dept Wood Sci & Technol, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia. 7.Harvard Univ, Harvard Forest, 324 North Main St, Petersham, MA 01366 USA. |
| 推荐引用方式 GB/T 7714 | Li, XX ,Liang, E ,Gricar, J ,et al. Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau[J]. SCIENCE BULLETIN,2017,62(11):804-812. |
| APA | Li, XX .,Liang, E .,Gricar, J .,Rossi, S .,Cufar, K .,...&Liang, E.(2017).Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau.SCIENCE BULLETIN,62(11),804-812. |
| MLA | Li, XX ,et al."Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau".SCIENCE BULLETIN 62.11(2017):804-812. |
入库方式： OAI收割
来源：青藏高原研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。