湖泊科学2011，Vol.23Issue(6)：903-909,7.
可可西里库赛湖KS-2006孔矿物组成揭示的青藏高原北部晚全新世气候变迁
Late Holocene climatic changes revealed by mineralogical records from lacustrine core KS-2006 from Lake Kusai in the Hoh Xil area, northern Tibetan Plateau
摘要
Abstract
The analyses of mineral assemblages of the core KS-2006 from Lake Kusai in the Hoh Xil area indicate that the carbonates in the sediments of Lake Kusai are mostly authigenic and mainly composed of aragonite. The variation of aragonite content probably reflects the temperature of lake water. Salt minerals were found since 2150 cal aBP, which is an indicative of the increase of salinity of lake water. Meanwhile, the increase of quartz content may be related to the enhancement of wind activity which is caused by the cold-dry climate in this area. The process of climatic and environmental evolutions of late Holocene in this area could be divided into 3 stages as follows: the climate was generally warm between 3770 cal aBP and 2550 cal aBP, then the temperature dropped slowly during 2550-2150 cal aBP; from 2150 cal aBP to present, the climate became cold and dry characterized by low temperature and high salinity of lake water, and strengthening of wind activity; however, there is a distinctly warm period occurred during 900-700 cal aBP.关键词
青藏高原北部/可可西里/库赛湖/矿物组合/晚全新世/气候演化Key words
Northern Tibetan Plateau/Hoh Xil area/Lake Kusai/mineral assemblage/late Holocene/climatic evolution引用本文复制引用
姚波,刘兴起,王永波,杨波..可可西里库赛湖KS-2006孔矿物组成揭示的青藏高原北部晚全新世气候变迁[J].湖泊科学,2011,23(6):903-909,7.基金项目
全球变化研究国家重大科学研究计划项目(2010CB950101)和中国科学院战略性先导科技专项项目(XDA05080403)联合资助. （2010CB950101）
