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四万年来青藏高原的气候变迁
引用本文:陈克造,J. M. Bowler,K. Kelts.四万年来青藏高原的气候变迁[J].第四纪研究,1990,10(1):21-31.
作者姓名:陈克造  J. M. Bowler  K. Kelts
作者单位:中国科学院青海盐湖研究所,澳大利亚堪培拉国立大学,瑞士联邦苏黎世理工大学
摘    要:内陆湖泊,特别是那些大型的淡水湖和盐湖,在漫长的演变历史长河中,对气候环境的反映是相当敏感的。巨厚的沉积物,记录了古气候变迁的丰富信息。盐湖的研究表明,40000年来的重大气候事件,在世界屋脊——青藏高原内部同样有明显的反映。

关 键 词:干盐湖  蒸发岩  含盐系

PALAEOCLIMATIC EVOLUTION WITHIN THE QINGHAIXIZANG (TIBET) PLATEAU IN THE LAST 40 000 YEARS
Affiliation:1. Inst. of Salt Lakes, Chinese Academy of Sciences;
2. Dept. of Biogeography &|Geomorphology, The Australian National Univ., Australia;
3. Geologisches Inst., ETH-Z, Zurich, Switzerland
Abstract:The climatic evolution in Quaternary is an attractive scientific subject, especially the palaeoclimatic change over the Qinghai-Xizang (Tibet) Plateau has drawn the attention of scholars at home and abroad. The plateau which is covered by the vast arid-semiarid region developes many salt lakes. These salt lakes contain affluent information about palaeoclimatic change and is of importance in the study of the arid-semiarid region.In the past years, we have collected some data of palaeoclimatic change through the study of salt lakes in the plateau. Basing on the studies of Qinghai Lake, Qarhan Salt Lake in Qaidam Basin and Zhacangchaka Lake in northern Xizang, the authors give a climatic change sequence in the last 40 000 years as follows:38 000—25 000 a B. P. wet25 000—10 000 a B. P. cold-dry10 000—7 000 a B. P. warm-dry7 000—3 600 a B. P. wet-tepid (climate optimum)3 600—1 500 a B. P. cool and tepid alternating1 500 a B. P.—present similar to todayThe results suggest that the influential global climatic events in the last 40 000 years also reflected over the Qinghai-Xizang Plateau, even though they were not completely synchronous sometimes.
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