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文中报道了西班牙西北部San Isidro和Leitariegos地区两口钻井全新世孢粉学比较研究的结果。孢粉分析结果显示了两地孢粉组合成分上的不同。根据从San Isidro地区泥炭沼泽获得的孢粉组合中乔木和灌木花粉百分含量变化,建立了两个组合带。孢粉植物群代表了一个松属占统治地位的森林,桦属、栎属、榛属等花粉含量变化序列可能和气温升高,降雨量增加有关。根据乔木花粉相对丰度变化,Leitariegos地区钻井剖面建立了3个孢粉组合。桦本属花粉含量增加说明是桦树林,栎属和榛属花粉居次要地位,松属花粉含量下降。文中还总结了两个孢粉序列所反映的人类活动、植被演替以及地形景观改变等之间的关系。两地钻井剖面底部碳同位素年代测定表明二者的底部并不同时。
The paper reports the results of a comparative study of the Palynology of the two wells in the San Isidro and Leitariegos areas in northwestern Spain. The results of sporopollen analysis showed that the composition of sporopollen in the two places is different. Based on changes in the percentage of pollen of trees and shrubs in the sporopollen assemblages obtained from peat swamps in the San Isidro region, two combination bands were established. The pollen flora represents a dominated pine forest. The sequence of pollen content of Betula, Quercus, Hazelnut and others may be related to the increase of temperature and the increase of rainfall. Based on the relative abundance of arbor pollen, three sporopollen assemblages were established in the Leitariegos section. The increase of pollen content in Betula platyphylla shows that pollen of birch forest, Quercus and Hazelnut is secondary and the content of Pinus pollen decreased. The article also summarizes the relationship between human activities, vegetation succession and the change of terrain landscape reflected by two sporopollen sequences. The dating of the carbon isotope at the bottom of the drilling profile in both places shows that the bottom of the two are not at the same time.