Pooled versus separate tree-ring delta D measurements, and implications for reconstruction of the Arctic Oscillation in northwestern China (SCI)
文献类型：期刊论文
| 作者 | Liu X. H.; An W. L.; Treydte K.; Wang W. Z.; Xu G. B.; Zeng X. M.; Wu G. J.; Wang B.; Zhang X. W. |
| 刊名 | Science of the Total Environment
 |
| 出版日期 | 2015 |
| 卷号 | 511页码:584-594 |
| 英文摘要 | Stable hydrogen isotope ratios (delta D) in tree rings are an attractive but still rarely explored terrestrial archive of past climatic information. Because the preparation of the cellulose nitrate for delta D measurements requires more wood and a longer preparation time than preparation techniques for other isotopes in cellulose (delta O-18 or delta C-13), it is challenging to obtain high-resolution records, especially for slow-growing trees at high elevations and in boreal regions. Here, we tested whether annually pooled samples of Qinghai spruce (Picea crassifolia Kom.) trees from northwestern China provided results similar to those derived as the mean of individual measurements of the same trees and whether the resulting chronologies recorded useful climate information. Inter-tree variability of delta D was higher than that of measured ring width for the same trees. We found higher and significant coherence between pooled and mean isotope chronologies than that among the individual series. It showed a logarithmic relationship between ring mass and delta D; however, accounting for the influence of ring mass on delta D values only slightly improved the strength of climatic signals in the pooled records. Tree-ring delta D was significantly positively correlated with the mean, maximum, and minimum temperatures during the previous winter and with maximum temperature during the current August, and significantly negatively correlated with precipitation in the previous November to January and the current July. The winter climate signal seems to dominate tree-ring delta D through the influence of large-scale atmospheric circulation patterns, i.e. the Arctic Oscillation. These results will facilitate reconstruction of winter atmospheric circulation patterns over northwestern China based on a regional tree-ring delta D networks. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27583]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu X. H.,An W. L.,Treydte K.,et al. Pooled versus separate tree-ring delta D measurements, and implications for reconstruction of the Arctic Oscillation in northwestern China (SCI)[J]. Science of the Total Environment,2015,511:584-594. |
| APA | Liu X. H..,An W. L..,Treydte K..,Wang W. Z..,Xu G. B..,...&Zhang X. W..(2015).Pooled versus separate tree-ring delta D measurements, and implications for reconstruction of the Arctic Oscillation in northwestern China (SCI).Science of the Total Environment,511,584-594. |
| MLA | Liu X. H.,et al."Pooled versus separate tree-ring delta D measurements, and implications for reconstruction of the Arctic Oscillation in northwestern China (SCI)".Science of the Total Environment 511(2015):584-594. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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