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青藏高原东北部若尔盖盆地连续的花粉记录提供了最后两个冰期一间冰期植被和气候变化证据,同时为建立RM孔上部60m的年代序列提供依据.在间冰期和间冰阶亚高山云杉-冷杉林广泛分布于若尔盖盆地,说明在这些时期盛行温暖湿润的气候.在倒数第2次冰期和末次冰盛期冷干的气候条件下分别存在着流石滩和干旱荒漠植被,且前者更冷.在MIS4,主要是高山草甸;在MIS3,亚高山云杉-冷杉多次扩张和收缩表明存在一系列的冰阶和间冰阶事件,这与古里雅以及GISP2的冰芯记录吻合.从RM孔孢粉记录得到的气候史和从阿拉伯海提取的季风记录与古里雅和格陵兰冰芯δ18O记录之间显著的相似性支持以下观点:青藏高原对于北大西洋盆地的气候事件和亚洲西南季风强度变化之间起着重要的联系作用.
Consecutive pollen records in the Zoigê basin in the northeastern Qinghai-Tibet Plateau provide evidence of vegetation and climate changes during the last two ice ages and provide a basis for establishing the 60-m chronology of the upper part of the RM boreholes. In the inter-glacial and inter-ice sub-alpine spruce- The fir forests are widely distributed in the Zoige basin, indicating the prevailing warm and humid climate prevailing in these periods, where there are respectively flowing rocky beaches and arid desert vegetation in the penultimate and climatic conditions, and the former are colder. In MIS4, mainly the alpine meadow; in MIS3, sub-alpine spruce-fir repeatedly expanded and shrunk indicating a series of ice and interglacial events, consistent with the records of the Guliya and GISP2 ice cores. The striking similarities between the recorded climatic history of the pollen and the monsoon records extracted from the Arabian Sea and the records of the Gurit Greenian ice core δ18O support the notion that the Tibetan Plateau is responsible for climate events in the North Atlantic basin and changes in intensity of southwesterly monsoon in Asia Play an important role in the relationship between.