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| Temperature variations recovered from tree-rings in the middle Qilian Mountain over the last millennium | |
| 作者姓名： | LIU Xiaohong QIN Dahe SHAO Xuemei CHEN Tuo & REN Jiawen . Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China . Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing China |
| 作者单位： | LIU Xiaohong1，2，QIN Dahe1，SHAO Xuemei，CHEN Tuo1 & REN Jiawen12 1. Cold and Arid Regions Environmental and Engineering Research Institute，Chinese Academy of Sciences，Lanzhou 730000，China; 2. Institute of Geographical Sciences and Natural Resources Research，Chinese Academy of Sciences，Beijing 100101，China |
| 基金项目： | 中国科学院知识创新工程项目，the opening fund of the Key Laboratory of Ice-core and Cold-regions Environment |
| 摘 要： | During the past 1000 years, there had been sev-eral widespread climate events on the earth, such asthe ‘Medieval Warm Period’, the ‘Little Ice Age’ andthe recent warming from the later part of the nine-teenth century onward1,2]. To better understand thedetails of climatic history on a regional scale, morehigh-resolution, millennia-length climate reconstruc-tions are needed by intensive, multiproxy investigationof ice cores, sediments of loess and lakes, corals andtree-rings. Since … |
| 收稿时间： | 16 February 2003 |
Temperature variations recovered from tree-rings in the middle Qilian Mountain over the last millennium |
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| LIU Xiaohong,,QIN Dahe,SHAO Xuemei,CHEN Tuo & REN Jiawen . Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou ,China, . Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing ,China.Temperature variations recovered from tree-rings in the middle Qilian Mountain over the last millennium[J].Science in China(Earth Sciences),2005,48(4):521-529. | |
| Authors: | Xiaohong?Liu Dahe?Qin |
| Institution: | 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 3. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China |
| Abstract: | Based on the cross-dated tree-ring samples collected from the middle Qilian Mountain, a standard ring-width chronology had been developed, which covered the period AD 1000 to 2000. The correlations between the chronology and climatic records from the nearby meteorological stations indicated that temperature was the dominant climatic factor for tree growth at upper timberline, and the most important climatic factor for the tree growth in the area was the mean temperature from previous December to current April. The temperature variations recovered from the ring-width data showed a cold period during the “Little Ice Age” and the continuous warming during the twentieth century. Comparison between the ring-width chronology and δ 18O records from the Dunde ice core in the Qilian Mountain indicated that there was a consistent trend in both time series. A significant correlation existed between our ring-width chronology and the Northern Hemispheric temperature, suggesting that the climate changes in the Qilian Mountain were not only driven by regional factors, but also responsive to the global climate. |
| Keywords: | middle Qilian Mountain tree-ring width chronology temperature variations |
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