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中国沙漠 ›› 1994, Vol. 14 ›› Issue (2): 31-37.

• 论文 • 上一篇    下一篇

塔克拉玛干沙漠腹地晚冰期以来的环境与气候变化

靳鹤龄, 董光荣, 金炯, 李保生, 邵亚军   

  1. 中国科学院兰州沙漠研究所, 兰州 730000
  • 收稿日期:1994-05-10 出版日期:1994-09-20 发布日期:1994-09-20

ENVIRONMENTAL AND CLIMATIC CHANGES IN THE INTERIOR OF TAKLIMAKAN DESERT SINCE LATE GLACIAL AGE

Jing Heling, Dong Guangrong, Jin Jiong, Li Baosheng, Shao Yajun   

  1. Institute Desert Research, Academia Sinica, Lanzhou 730000
  • Received:1994-05-10 Online:1994-09-20 Published:1994-09-20

摘要: 通过对塔克拉玛干沙漠腹地地层剖面的沉积类型、孢粉、pH值、有机质、CaCO3和地球化学气候指标C等分析,认为本区晚冰期以来一直处于荒漠环境,气候变化可划出四个阶段:13-10 kaB.P.气候寒冷。温凉,干旱,湿度相对后期较大;10-8 kaB.P.气候温暖干旱,湿度相对减小;8-3 kaB.P.气候炎热干旱,湿度最小;3 kaB.P.至今气候温暖干旱,湿度较前增大,气候及环境与今相似。

关键词: 塔克拉玛干沙漠, 晚冰期, 环境与气候变化

Abstract: The enviromental and climatic changes have been discussed based on the studied results of strata,pollen analysis,pH,organic matters,CaCO3 and climatic index of geochemistry in the stratum section in the hinterland of Taklimakan Desert.It show clearly that plants such as Ephedra,Chenopodiaccae and Artemiseaetc,are dominant and pH is more than 8.The content of organic matters is low but that of CaCO3 is high.The information indicate that there are four phrases of climatic change since late glacial age:cold to cool arid,warm arid,hot arid and warm arid phases being similar to today's conditions in late glacial age and early,middle and late Holocene respectively,Mean-while,the humidity reduced slowly from late glacial age to middle Holocene and reached the lowest piont in middle Holocene,then returned to the today's conditions.

Key words: Taklimakam Desert, Late glacial age, Envionmental and climatic changes