本文讨论巴里坤湖ZK0024孔全新世以来微量元素演化规律的古气候意义,并结合孢粉微体及14C 测定的分析,论述了钻孔剖面中微量元素高值均出现在暖干期、低值则几乎都出现在冷湿期.微量元素及比值在剖面中自下而上有规律的波动,反映了古气候的冷湿与暖干的交替变化,并与山区的冰期,间冰期呈良好的对应关系。
On the basis of the trace element analysis of ZK0024 drill in Barkol Lake in the Holocene,in combination with the data on the sporo-pollen,micropaleontology and 14C dating,the palaeoclimate significance from the evolution law of trace elements in ZK0024 drill of Barkol Lake since the Holocene is discussed. The higher and lower values of trace element ratios are corresponds to the warm -dry and cold-humid periods respectively.The regular change of trace clements and their ratios from bottom to top reflects the change of cold-humid and warm -dry alternation of palaeoclimate.The new idea is proposed that the cold-humid period corresponds to the glacial age and the warm-dry period to the interglacial epoch.It is considered that the palaeoclimate evolution pattern belong to the monsoon climate region since the Late Pleistocene.
[1] 姚檀栋、施雅风:乌鲁木齐河气候、冰川、径流变化及未来趋势,中国科学(B),1988年,6期.
[2] 张林源:青藏高原上升对我国第四纪环境演变的影响。兰州大学学报,1981年3期.
[3] 安凤桐、张秀梅:天津东北部洼地全新世沉积环境和沉积地球化学特征,地理集刊,第18号,科学出版社,1987年.
[4] 文启忠:北疆地区晚更新世以来的气候环境变迁,科学通报,10期,1988年.
[5] 习桂文、文启忠:黄土中几种微量元素的概率分布及地球化学意义,中国第四纪研究,7卷,1期,1988年.