华北平原十二万年以来的古气候变化

本文通过近十个钻孔孢粉分析结果的综合对比研究,建立起该地区晚更新世以来的综合孢粉图谱,绘制出气温曲线。把12万年以来的古气候分为三个阶段、七个气候期,包含有10个以上的主要气候波动。整个气温变化幅度在10℃左右。这条气候曲线与国内外典型气候曲线对比,说明了古气候变化具有全球性。

PALAEOCLIMATE VARIABILITY OF THE NORTH CHINA PLAIN FOR THE LAST 120000 YEARS

In this paper the generalized spore-pollen scheme and the temperature curve of the studied region since the Last Pleistocene are constructed based on analysis of the spore-pollen from ten drill holes, According to the climate variation, the pas t 1200011 yea rs are divided in to three s tages, seven clima tic periods, with wh-ich ten more climatic fluctuations are contained, and the overall amplitude of te-mperature changes is about 10 degrees een tigrade. The com parison of this curve with otlier tvpical climate curves in china and abroad illustrates that the I'alaco climate variability is glohal.