摘要
本文根据对2个钻孔岩芯34个孢粉样品的分析和3个^(14)C年代测定,划分了7个孢粉带;以样品中热带、南亚热带木本植物花粉与中、北亚热带及暖温带木本植物花粉含量的比值绘制了半定量气候变化曲线,分析了近2000年来史籍和地方志气候变化记载。结果表明三者有较好的对应关系。作者据此提出了对广州地区2000年来气候变化的初步看法。
In this paper, according to the analysis of 34 samples from 2 boreholes and 3 ^(14)C-dating ages, 7 spore-pollen zones are carved out; a semi-quantitative curve of climate changes is drawn out with ratio of pollon content of tropical and south subtropical woody plant to that of middle-north subtropical and temperate woody plant; the historical records and local chronicles about the changes of climate in the past 2000 years are also analysed. The conclusion is that the three respects mentioned above are of good contrast. Based on these evidence, a preliminary view about climate changes of Guangzhou area in the past 2000 years are put forward.
出处
《热带地理》
北大核心
1991年第1期16-24,共9页
Tropical Geography
关键词
气候
变化
孢粉
广州地区
Guangzhou area
Climate change
Spore-pollen
