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本文根据1985年在青海湖采集的岩芯中有机碳、氮含量的垂直分布特征和孢粉组合等资料,讨论了青海湖地区晚更新世末期以来古气候的波动模式。该模式与用介形虫壳体内氧同位素变化建立的古气候波动模式十分二致,表明在干寒地区沉积物中有机碳含量变化的研究,可为查明当地古气候的变化提供重要依据。
Based on the vertical distribution of organic carbon and nitrogen in the cores collected in Qinghai Lake in 1985 and the data of sporopollen assemblages, the paper discussed the paleoclimate fluctuation patterns in the Qinghai Lake since the late Pleistocene. This model is very similar to the paleoclimate fluctuation model established by the change of oxygen isotope in the shell of ostracoda, which shows that the change of organic carbon content in sediments in dry and cold regions can provide an important basis for identifying the changes of paleoclimate.