| 川北若尔盖高原红原泥炭剖面孢粉记录的晚冰期以来古气候古环境的演变 |
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| 引用本文： | 王燕,赵志中,乔彦松,王书兵,李朝柱,宋利峰.川北若尔盖高原红原泥炭剖面孢粉记录的晚冰期以来古气候古环境的演变[J].地质通报,2006,25(7):827-832. |
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| 作者姓名： | 王燕 赵志中 乔彦松 王书兵 李朝柱 宋利峰 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所,北京,100081
2. 中国地质大学地球科学与资源学院,北京,100083 |
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| 基金项目： | 中国地质调查局地质调查项目，中国科学院资助项目 |
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| 摘 要： | 利用14C测年及孢粉分析方法对位于若尔盖高原的红原泥炭剖面进行了系统研究,重建了若尔盖地区晚冰期以来古环境的演化历史,并识别在此期间发生的主要气候事件.结果表明:该区晚冰期的气候特点为冷偏干或凉偏干,冷暖波动频繁.其中,14.1～13.4、12.4～12.0和10.5～10.0 kaBP之间的冷阶段分别对应于Oldest Dryas、Older Dryas及Younger Dryas事件;发生于12.6～12.4和12.0～10.5kaBP左右的暖阶段分别对应于Bolling及Allerod暖期.Younger Dryas事件之后,气候总体以温湿为主要特征,8.9～8.7和6.1～5.8kaBP之间的明显降温为全新世期间的2次冷事件.孢粉记录所反映的若尔盖地区晚冰期以来的气候演化与全球气候变化具有较好的可比性.
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| 关 键 词： | 川北若尔盖地区 红原剖面 孢粉 晚冰期 古气候古环境演化 |
| 文章编号： | 1671-2552（2006）07-0827-06 |
| 收稿时间： | 2005-12-16 |
| 修稿时间： | 2006-04-20 |
Paleoclimatic and paleoenvironmental evolution since the late glacial epoch as recorded by sporopollen from the Hongyuan peat section on the Zoige Plateau, northern Sichuan, China. |
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| WANG Yan,ZHAO Zhi-zhong,QIAO Yan-song,WANG Shu-bing,LI Chao-zhu,SONG Li-feng.Paleoclimatic and paleoenvironmental evolution since the late glacial epoch as recorded by sporopollen from the Hongyuan peat section on the Zoige Plateau, northern Sichuan, China.[J].Geologcal Bulletin OF China,2006,25(7):827-832. |
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| Authors: | WANG Yan ZHAO Zhi-zhong QIAO Yan-song WANG Shu-bing LI Chao-zhu SONG Li-feng |
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| Institution: | 1. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; 2. College of Earth Sciences and Land Resources, China University of Geosciences, Beijing 100085, China |
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| Abstract: | A 7.95 m thick peat section at Hongyuan on the southern Zoige Plateau was systematically studied using the ^14C method and sporopollen analysis, the paleoenvironmental history since the late glacial epoch in the Zoige area was reconstructed and the main paleoclimatic events occurring in this period were identified. The late glacial epoch in the area witnessed a cold-slightly dry or cool-slightly dry climate and repeated cold-warm climatic oscillations. The cold phases in the 14.1-13.4, 12.4-12.0 and 10.5-10.0 ka intervals correspond to the Oldest Dryas, Older Dryas and Younger Dryas events respectively, and the warm phases in the 12.6-12.4 and 12.0-10.5 ka intervals correspond to the BoUing and Allerod warm events respectively. The climate after Younger Dryas was mainly warm and moist, and the significant temperature lowering in the 8.9-8.7 and 6.1-5.8 ka intervals marked two cold events in the Holocene. The climatic evolution since the late glacial epoch in the Zoige area reflected by sporopollen records may be well correlated with the global climate change. |
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| Keywords: | Zoige Plateau northern Sichuan Hongyuan section pollen late glacial stage paleoclimatic and paleoenvironmental evolution |
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