Reinterpretation of the Chronological Data of Palaeo-Environmental Records in the Badain Jaran Desert and Reconstruction of the Holocene Climatic Changes

• 责任者：Liu Ziting (Key Laboratory of Cenozoic Geology and Environment ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing100029 ; China) ; Yang Xiaoping
• 刊名：Quaternary Sciences
• 出版年：2010
• 卷期：30(5)
• 关键词：全新世 ; Holocene ; 古环境 ; paleoenvironment ; 内蒙古 ; Inner Mongolia
• 页码：p.925-933
• 索书号：P515.206/633-4
• 图表：3 illus., 1 table, 51 refs.
• 分类号：1400
• issnNo：ISSN1001-7410
• isbnNo：CN11-2708/P

Based on a reinterpretation of the chronological data and palaeo-environmental records from previous palaeo-environmental studies in the Badain Jaran Desert and its neighboring regions, this paper aims to provide an updated reconstruction of the Holocene climate history in the middle portion of the desert belt in Northern China. Studies results suggest that palaeolakes and palaeosoil developed since the early Holocene and maintained until the mid Holocene in the desert. The Holocene climate of the study area can be divided into three stages: 1)quite arid at the boundary between the Late Pleistocene and the beginning of the Early Holocene; 2)and then quickly towards less arid environment at about 10.0 cal. ka B.P., and reached the condition of the maximal moisture during 8.5～4.0 cal. Ka B.P., and with several short-lived episodes of increased dryness during this period; and 3)generally arid climate since 4.0 cal. ka B.P., but slightly wetter at about 2.2 cal. ka B.P.. This kind of trend indicates that the precipitation of the East Asian summer monsoon was clearly enhanced at the Early Holocene, and kept relatively abundant during the Middle Holocene but decreased drastically again in the Late Holocene.