云南点苍山全新世以来的冰川湖泊沉积  

Glacial Lacustrine Sediment's Response to Climate Change since Holocene in Diancang Mountain

作　　者：杨建强[1] 崔之久[1] 易朝露[1] 张威[2] 刘克新[3] 

机构地区：[1]北京大学环境学院,北京100871 [2]辽宁工程技术大学,阜新123000 [3]北京大学重离子物理研究所,北京100871

出　　处：《地理学报》2004年第4期525-533,共9页Acta Geographica Sinica

基　　金：国家自然科学基金(40071015);云南大理州城建局项目~~

摘　　要：根据对点苍山冰川湖泊沉积的粒度、磁化率、元素地球化学以及孢粉等环境指标的综合分析,结合冰川地貌特征,以点、面两方面资料结合的方式综合分析,试图建立该地全新世以来的气候变化系列,共划分为6个气候阶段,以冷湿与暖干的组合为其特征。与其他西南季风区的环境变迁对比表明,点苍山受西南季风影响加强的时间晚于阿拉伯海而早于青藏高原,可以认为是联系以上两者的纽带。当西南季风在青藏高原逐步强盛以后。On the basis of the physical and chemical analyses of glacial lacustine sediment and glacial geomorphology in Diancang Mountain, the series of climate change since Holocene is expected to be rebuilt, including 6 stages with the alternation of cold-wet and warm-dry climate. The comparison with other areas affected by southwest monsoon shows that the time when southwest monsoon arrived at Diancang Mountain was later than that of the Arabian Sea and earlier than that of the Tibetan Plateau. This fact implies that Diancang Mountain is the joint linkage of the above place. Another phenomenon is that after southwest monsoon arrived at the Tibetan Plateau, the climate of Diancang Mountain change slightly drier. The record presents that this area was influenced by southeast monsoon between 6.0 ka BP and 5.3 ka BP.

关 键 词：全新世 冰川 湖泊 沉积 环境演变 点苍山 

分 类 号：P512.2[天文地球—地质学] P534.632