Climate Control on Tree Growth at the Upper and Lower Treelines: A Case Study in the Qilian Mountains, Tibetan Plateau
文献类型：SCI/SSCI论文
| 作者 | Yang, Bao1; He, Minhui1; Melvin, Thomas M.2; Zhao, Yan3 ; Briffa, Keith R.2
|
| 发表日期 | 2013-07-11 |
| 英文摘要 | It is generally hypothesized that tree growth at the upper treeline is normally controlled by temperature while that at the lower treeline is precipitation limited. However, uniform patterns of inter-annual ring-width variations along altitudinal gradients are also observed in some situations. How changing elevation influences tree growth in the cold and arid Qilian Mountains, on the northeastern Tibetan Plateau, is of considerable interest because of the sensitivity of the region's local climate to different atmospheric circulation patterns. Here, a network of four Qilian juniper (Sabina przewalskii Kom.) ring-width chronologies was developed from trees distributed on a typical mountain slope at elevations ranging from 3000 to 3520 m above sea level (a.s.l.). The statistical characteristics of the four tree-ring chronologies show no significant correlation with increasing elevation. All the sampled tree growth was controlled by a common climatic signal (local precipitation) across the investigated altitudinal gradient (520 m). During the common reliable period, covering the past 450 years, the four chronologies have exhibited coherent growth patterns in both the high-and low-frequency domains. These results contradict the notion of contrasting climate growth controls at higher and lower elevations, and specifically the assumption that inter-annual tree-growth variability is controlled by temperature at the upper treeline. It should be stressed that these results relate to the relatively arid conditions at the sampling sites in the Qilian Mountains. |
| 出处 | PLOS ONE |
| 卷 | 8 |
| 期 | 7 ; 7 |
| 语种 | 英语 |
| 源URL | [http://192.168.22.105/handle/311030/30116]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 通讯作者 | Yang, Bao |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou, Peoples R China 2.Univ E Anglia, Sch Environm Sci, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Bao,He, Minhui,Melvin, Thomas M.,et al. Climate Control on Tree Growth at the Upper and Lower Treelines: A Case Study in the Qilian Mountains, Tibetan Plateau. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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