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我国西部内陆型晚冰期环境特征的湖相沉积记录

Inland Lacustrine Record of Environmental Change during Late Glaciation in West China

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【作者】 钟巍韩淑媞

【Author】 Zhong Wei; Han Shuti (Department of Geography . Xinjiang University , Urumgi 830046)

【机构】 新疆大学地理系!乌鲁木齐830046

【摘要】 根据新疆东部巴里坤湖沉积地层及孢粉、地球化学元素和有机质合量波动特征.同时结合年代的测定,本文对由其所揭示的晚冰期中的几次冰阶与间冰阶交替出现的内陆型环境演变特征进行了研究.指出此阶段中环境演变仍具有相对冷湿与暖干交替的匹配模式,广泛的区域性对比表明.它的出现具有全球一致性.同时又具有区域性差异特征,这种非线性的气候变化对于研究气候突变事件的发生机制具有重要意义。

【Abstract】 Based on the sedimentary feature, spore-pollen analyses, the contents of geochemical elaments and organic matter, together with the chronological results of the lacustrine sediment of Balikun Lake in the northern part of Xinjiang, this paper focuses on the climatic change during Late Glaciation. The climate during this period was characterized by alternation of several stadials and interstadials, and there still exists a disposal regime of hydro-and thermal-conditions. which is represented by cold-humid and warm-dry on the time scale of 100 years, differentiating from the eastern monsoonal area in China and the other areas over the world, but the process of climatic evoltion is synchroneous. What the paper has revealed is a non-linear climatic change during Late Glaciation in the northern part of Xinjiang, the most extreme arid inland area, which may be an important significance for providing some fresh insights into "The Climatic Abrupt Change Events".

【基金】 国家自然科学基金!4870042
  • 【文献出处】 湖泊科学 ,JOURNAL OF LAKE SCIENCE , 编辑部邮箱 ,1998年03期
  • 【分类号】P531
  • 【被引频次】13
  • 【下载频次】191
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