| 关中盆地东部李湾剖面全新世高分辨率气候研究 |
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| 引用本文： | 贾耀锋,庞奖励.关中盆地东部李湾剖面全新世高分辨率气候研究[J].干旱区资源与环境,2003,17(3):39-43. |
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| 作者姓名： | 贾耀锋 庞奖励 |
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| 作者单位： | 陕西师范大学旅游与环境学院,西安,710062 |
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| 基金项目： | 国家自然科学基金项目 (4 0 0 0 71 0 0 6 )资助，教育部文社科重点研究基地重大招标项目 (0 1JAZJD770 0 1 4 ) |
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| 摘 要： | 根据李湾剖面磁化率、粒度、微量元素Rb/Sr比值和全铁值的分析结果 ,探讨了李湾剖面黄土纪录所揭示的全新世以来的高分辨率的气候变化。结果发现 :全新世气候的不稳定性在关中盆地东部地区亦有明显的反映 ,这说明 60 0 0 - 50 0 0aB .P .的干旱事件在关中盆地具有普遍性 ;同时 ,本区自 850 0aB .P .以来的全新世最适宜期至少发生了五次气候恶化 ,分别位于李湾剖面深 1 85cm、1 70cm、1 2 5cm、1 0 5cm、85cm附近。
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| 关 键 词： | 全新世 黄土 代用指标 气候变化 |
| 文章编号： | 1003-7578(2003)03-039-05 |
| 修稿时间： | 2002年6月13日 |
The High Resolution of the Holocene Climatic Study in Liwan Profile in Eastern Guanzhong Basin |
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| JIA Yao-feng,PANG Jiang-li.The High Resolution of the Holocene Climatic Study in Liwan Profile in Eastern Guanzhong Basin[J].Journal of Arid Land Resources and Environment,2003,17(3):39-43. |
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| Authors: | JIA Yao-feng PANG Jiang-li |
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| Abstract: | According to the analyzing results of susceptibilitygrain sizemicro-elements and total Fe of Liwan section, the Holocene climatic changes were analized. The result indicated that the Holocene climatic unstableness was obvious in eastern Guanzhong Basin, and the dried event during 6000-5000aB.P was universality in Guanzhong Basin. there were five dried events at least in this area, which located about at depth of 185cm170cm125cm 105cm and 85cm in Liwan section. |
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| Keywords: | Holocene loesis substitutive index climate change Eastern Guanzhong Basin |
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