EVOLUTION OF PALEOCLIMATE AND PLANT COMMUNITY IN THE LAST 800 ka B P IN DATONG AREA
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摘要: 本文通过山西大同地区黑山南四沟剖面、东水头剖面及小北庄剖面的孢粉资料,对该区0.8Ma以来的自然环境进行研究探讨。结果表明,该时期植被经历了森林-森林草原-草原-荒漠草原4个发展阶段,与其相对应的气候变化有3个气候旋回,9个亚旋回,各气候旋回都是以冷干开始,温湿结束。Abstract: A sporopollen analysis of the Dongshuitou section, Xiaobeizhuang section and Nansigou section of the Heishan hill, Datong, Shanxi, shows that the vegetation since 800 ka B P has gone through four stages developing from forest through sylvosteppe and steppe to desertsteppe, Corresponding to the changes of paleoclimate, i.e. three climatic cycles, including nine subcycles, each beginning with a cold and dry climate, and ending in a warm and humid one.
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Key words:
- loess /
- paleoenvironment /
- paleoclimate /
- Datong basin
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