Tree rings reveal recent intensified spring drought in the central Himalaya, Nepal
文献类型：期刊论文
| 作者 | Panthi, Shankar; Braeuning, Achim; Zhou, Zhe-Kun ; Fan, Ze-Xin
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| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2017 |
| 卷号 | 157期号:x页码:26-34 |
| 关键词 | Central Himalaya Dendrodimatology Nepal Picea Smithiana Spring Drought Tree-rings |
| 英文摘要 | To better understand long-term drought variations in the central Himalaya, we developed new tree-ring width chronologies of Himalayan spruce (Picea smithiana (Wall.) Boiss.) from three sites in the north-western Nepal. The local site chronologies showed high cross correlations and similar growth-climate responses to regional spring drought variability. We thus combined all site chronologies into a regional composite (RC) standard chronology that spans 516 years (1498-2013 CE). The RC chronology showed significant positive (negative) correlations with spring (March May) precipitation (temperature) variability. Meanwhile, RC chronology showed the highest correlation with spring self-calibrating Palmer drought severity index (scPDSI, r = 0.652, p < 0.001), indicating that radial growth of P. smithiana is strongly limited by spring moisture availability. Using RC chronology, we reconstructed the spring drought variability for the period 1725-2013, which explained 42.5% variance of the actual scPDSI during the calibration period 1957-2012. Our reconstructed spring drought variability in the central Himalaya showed consistent wet-dry episodes with other regional drought and precipitation reconstructions from the Himalaya and nearby regions. Spectral peaks and spatial correlation analysis indicate that spring drought variability in the central Himalaya may be linked to large scale climatic drivers, mainly Atlantic Multidecadal Oscillation activities due to sea surface temperatures variation in the Atlantic Ocean. Our reconstruction revealed a continuous shift toward drier conditions in the central Himalaya since early 1980s that coincide with continental-scale warming and reduced spring precipitation in the central Himalaya. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 公开日期 | 2018-02-09 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/10737]  |
| 专题 | 西双版纳热带植物园_古生态研究组 西双版纳热带植物园_2012年后新成立研究组 |
| 通讯作者 | Zhou, Zhe-Kun; Fan, Ze-Xin |
| 推荐引用方式 GB/T 7714 | Panthi, Shankar,Braeuning, Achim,Zhou, Zhe-Kun,et al. Tree rings reveal recent intensified spring drought in the central Himalaya, Nepal[J]. GLOBAL AND PLANETARY CHANGE,2017,157(x):26-34. |
| APA | Panthi, Shankar,Braeuning, Achim,Zhou, Zhe-Kun,&Fan, Ze-Xin.(2017).Tree rings reveal recent intensified spring drought in the central Himalaya, Nepal.GLOBAL AND PLANETARY CHANGE,157(x),26-34. |
| MLA | Panthi, Shankar,et al."Tree rings reveal recent intensified spring drought in the central Himalaya, Nepal".GLOBAL AND PLANETARY CHANGE 157.x(2017):26-34. |
入库方式： OAI收割
来源：西双版纳热带植物园
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