Climate instability during the last deglaciation in central Asia, reconstructed by pollen data from Yili Valley, NW China
文献类型：期刊论文
| 作者 | Zhao, Keliang（赵克良） ; Li, Xiaoqiang（李小强） ; Dodson, John ; Zhou, Xinying（周新郢） ; Atahan, Pia |
| 刊名 | REV PALAEOBOT PALYNO
 |
| 出版日期 | 2013 |
| 卷号 | 189期号:0页码:8—17 |
| 关键词 | ARID CENTRAL-ASIA TIBETAN PLATEAU NORTH-ATLANTIC YOUNGER DRYAS LAKE BAIKAL HIGH-RESOLUTION SEA-LEVEL MOISTURE EVOLUTION MONSOON CLIMATE GLACIAL PERIOD |
| ISSN号 | 0034-6667 |
| 通讯作者 | lixiaoqiang@ivpp.ac.cn |
| 英文摘要 | An extended pollen record with grain size analysis and AMS C-14 dating is provided for a palaeolake section which is located in an intermountain basin in Yili Valley, Xinjiang, NW China. Covering the late MIS 3, early MIS 2 and the last deglaciation, vegetation variations and climate events are discussed in relation to changes in pollen assemblages and Artemisia/Chenopodiaceae (A/C) ratios. The presence of montane forest-steppe dominated by Picea and Taraxacum indicates a relative humid climate in the study area during late MIS 3 (before 31.5 cal kyr BP). Picea forest disappeared and the vegetation dominated by Chenopodiaceae shows the climate became dry from 31.5 to 14.7 cal kyr BP. The sediments of Last Glacial Maximum (LGM) period are absent in the section probably. Betula-Picea mixed forest occurred at 14.7 cal kyr BP and corresponds to the onset of the warm Bolling period in the North Atlantic. A long dry period was detected from 14.5 to 13.6 cal kyr BP on the basis of the occurrence of Chenopodiaceae desert. A subalpine meadow community dominated by Geranium covered the area during 13.6-13.4 cal kyr BP, suggesting lower temperatures at this time. This may coincide with the Older Dryas (OD). The most humid period in the record occurred between 13.4 and 12.9 cal kyr BP, which coincides with the warm Allerod period. Dry conditions prevailed from similar to 12.9 to 11.7 cal kyr BP in the area, coinciding with the Younger Dryas (YD) in the North Atlantic. Within this period a three-phase climate fluctuation was detected, which can be summarized as follows: a dry early YD (12.9-12.6 cal kyr BP), a slightly moister mid-YD (12.6-12.0 cal kyr BP) and a very dry late YD (12.0-11.7 cal kyr BP). These millennial to century-scale climatic events in Yili Valley correlate well with other palaeoclimate records in North Hemisphere, suggesting that these events probably originate from same mechanisms. (C) 2012 Elsevier B.V. All rights reserved. |
| 原文出处 | 10.1016/j.revpalbo.2012.10.005 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4212]  |
| 专题 | 古脊椎动物与古人类研究所_古人类及旧石器研究室 |
| 推荐引用方式 GB/T 7714 | Zhao, Keliang,Li, Xiaoqiang,Dodson, John,et al. Climate instability during the last deglaciation in central Asia, reconstructed by pollen data from Yili Valley, NW China[J]. REV PALAEOBOT PALYNO,2013,189(0):8—17. |
| APA | Zhao, Keliang,Li, Xiaoqiang,Dodson, John,Zhou, Xinying,&Atahan, Pia.(2013).Climate instability during the last deglaciation in central Asia, reconstructed by pollen data from Yili Valley, NW China.REV PALAEOBOT PALYNO,189(0),8—17. |
| MLA | Zhao, Keliang,et al."Climate instability during the last deglaciation in central Asia, reconstructed by pollen data from Yili Valley, NW China".REV PALAEOBOT PALYNO 189.0(2013):8—17. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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