古地理学报 ›› 2014, Vol. 16 ›› Issue (2): 239-248. doi: 10.7605/gdlxb.2014.02.022

• 生物古地理学及古生态学 • 上一篇    下一篇

腾格里沙漠西北缘青土湖晚第四纪孢粉组合特征与环境变迁

王丽媛, 辛蔚, 程捷   

  1. 中国地质大学(北京)地球科学与资源学院,北京 100083
  • 收稿日期:2013-09-03 修回日期:2013-12-30 出版日期:2014-04-01 发布日期:2014-04-01
  • 通讯作者: 程捷,男,1963年生,中国地质大学(北京)教授,主要从事第四纪环境与城市地质方面的研究。E-mail:chgj@cugb.edu.cn。
  • 作者简介:王丽媛,女,1990年生,中国地质大学(北京)硕士研究生,主要从事第四纪环境与城市地质方面的研究。E-mail:anxin19900123@126.com。
  • 基金资助:
    “内蒙古1︰25万哈日敖包布格、乌力吉、达里克庙幅区调修测”项目(编号:1212011120706)资助

Sporopollen assemblages and climate changes since the Late Quaternaryat Qingtu Lake in northwestern margin of Tengger Desert

Wang Liyuan, Xin Wei, Cheng Jie   

  1. School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083
  • Received:2013-09-03 Revised:2013-12-30 Online:2014-04-01 Published:2014-04-01
  • About author:Wang Liyuan,born in 1990,is a candidate for master degree in China University of Geosciences(Beijing),and is mainly engaged in researches of Quaternary environment and urban geology. E-mail:anxin19900123@126.com.   About the corresponding author Cheng Jie,born in 1963,is a professor of China University of Geosciences(Beijing),and is mainly engaged in researches of Quaternary environment and urban geology. E-mail:chgj@cugb.edu.cn.

摘要: 根据腾格里沙漠西北缘青土湖ZK1孔晚第四纪以来沉积物孢粉组合、磁化率特征和光释光年代的研究,恢复了该区的植被面貌,论述了青土湖地区自中更新世晚期以来的气候变迁特征。研究结果表明,该地区中更新世晚期可划分为凉干和暖湿2个阶段;晚更新世可划分为暖湿和凉干2个阶段,并且与深海氧同位素曲线反映的末次间冰期、末次冰期的次一级气候旋回特征相吻合;全新世该地区主要经历了从暖湿到凉干的气候波动。

关键词: 孢粉组合, 气候变迁, 晚第四纪, 腾格里沙漠

Abstract: Based on the analyses of sporopollen assemblages,magnetic susceptibility,OSL dating of lake sediments from borehole ZK1 in Qingtu Lake,northwestern margin of the Tengger Desert,this paper reconstructs the vegetation features of each stage, discusses the vegetation assemblages and lake climate changes since the late Middle Pleistocene. It is indicated that Qingtu Lake experienced two stages of climate changes, dry-cold and warm-wet in the Middle Pleistocene,and warm-wet and dry-cold in the Late Pleistocene. Moreover,it is accorded with climate cycle characteristics of the last glaciation and the last interglacial in MIS. Meanwhile,Qingtu Lake experienced the evolutions of climate of the dry-cold and warm-wet in the Holocene.

Key words: sporopollen assemblages, climate change, Late Quaternary, Tengger Desert

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