Environmental Changes Recorded by Lacustrine Sediments since Late Holocene in Central Inner Mongolia

详细信息   

• 责任者：Zhao Zhili (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Wang Yong
• 刊名：Geological Bulletin of China
• 出版年：2011
• 卷期：30(8)
• 关键词：全新世 ; Holocene ; 内蒙古 ; Inner Mongolia
• 页码：p.1251-1255
• 图表：illus., 1 table, 22 refs.
• 分类号：1400
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

摘要

Based on a study of sedimentary features, grain sizes and pollen assemblages, the authors reconstructed a record of climatic and environmental changes in the past 1700 years for the Tengernur Lake in central Inner Mongolia. Some results have been obtained: From 1 700 to 1 170a, the climate was mainly warm and humid, and the water level of the lake was rising. From 1 170 to 840 a, the climate was arid and warm. From about 840 to 200 cal yr ago, a relatively warm and humid climate period existed, as evidenced by higher A/C ratios and finer grain sizes, and it was interrupted by a short cold and dry climate interval. Since 200a, the climate has been mainly warm and arid, with a tendency to dryness and coolness at the late stage.