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.
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.
Cite this article:
Wang Liyuan,Xin Wei,Cheng Jie. Sporopollen assemblages and climate changes since the Late Quaternaryat Qingtu Lake in northwestern margin of Tengger Desert[J]. JOPC, 2014, 16(2): 239-248.
Wang Liyuan,Xin Wei,Cheng Jie. Sporopollen assemblages and climate changes since the Late Quaternaryat Qingtu Lake in northwestern margin of Tengger Desert[J]. JOPC, 2014, 16(2): 239-248.
