云南大理点苍山地区晚更新世以来的古植被和古气候

Study on the Palaeovegation and Palaeoclimate Since Late Pleistocene in the Dianchang Mountain Area in Dali of YunNan Province

根据云南大理点苍山地区晚更新世沉积地层中的古植被的孢粉化石鉴定 ,结合孢粉图示的综合分析以及孢粉组合带的划分 ,探讨了该地区自晚更新世以来古植被的演替过程 ,并在此基础之上对古气候的波动过程进行了初步推测 ,结论显示自 12 2～ 118Ka .BP的湿热气候期之后 ,该地区的气候演变经历了 7次从冷—湿热的气候波动旋回 .

Based on the integrated analysis of illustration of spore and classification of sporopollen, and using the fossil identify of spore of palaeovegetation method in the depositional stratum, We have measured the succession of palaeovegetation since late Pleistocene in that area.On that foundation,it takes a primary estimate at the fluctuate process of palaeoclimate .The result shows that the climate in that area had undergone seven fluctuation of climate from cold and dry to warm and wet after 122 Ka～118 Ka.BP when it was warm and wet.