A 16000-year pollen record of Qinghai Lake and its paleoclimate and paleoenvironment

作     者：LIU Xingqi SHEN Ji WANG Sumin YANG Xiangdong TONG Guobang ZHANG Enlou 

作者机构：Key Laboratory of Lake Sedimentation and EnvironmentNanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China Institute of Hydrological and Environmental GeologyChinese Academy of Geological SciencesZhengding 050803China 

出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)

年 卷 期：2002年第47卷第22期

页      面：1931-1936页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：This work was supported by the National Natural and Science Foundation of China (Grant No. 40072056) the Knowledge Innovation Project of the Chinese Academy of Sciences (CAS) (Grant No. KZCXl-10-01), Post-doctor Foundation of China and the Foundation 

主　　题：Qinghai Lake pollen Lateglacial paleoclimate and paleoenvironment. 

摘      要：The paleoclimate and paleoenvironment of Qinghai Lake indicated by a 16000-year pollen record are as follows. It was very cold and dry before 15200 years. During the Late Glacial, the climate varied from colder and semiarid to cool and semi-humid and fluctuated frequently but with little amplitude. Three cold events in the periods of 13400-13000, 11600-12000, and 11000-10400 aBP respectively correspond to the Oldest Dryas, Older Dryas and Younger Dryas events, whereas the two warm periods between them, 12000-13000 and 11600-11000 aBP, respectively correspond to Boiling and Allerod periods. The temperature increased abruptly after the Younger Dryas event, and then the climate gradually turned to be warm and wet from warm and semiarid. In the Holocene, the largest amplitude of cold event that occurred at ca. 8200 aBP is quite prominent. The Holocene climatic optimum culminated at 6700 aBP. After 2100 aBP, the climate tended to be cold and dry, keeping on up to now. Palaeoclimatic evolution and events of