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《Journal of Palaeogeography》 2014-02
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Sporopollen assemblages and climate changes since the Late Quaternary at Qingtu Lake in northwestern margin of Tengger Desert

Wang Liyuan;Xin Wei;Cheng Jie;School of Earth Sciences and Resources,China University of Geosciences (Beijing);  
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.
【Fund】: “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
【CateGory Index】: P532;Q914
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