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引用本文:萧家仪,吴玉书.根据花粉与藻类化石组合探讨滇池Q3晚期的湖泊环境变迁.湖泊科学,1990,2(2):25-30. DOI:10.18307/1990.0204
Xiao Jiayi,Wu Yushu.Analysis Of The Late Pleistocene Environmental Changes In Dianchi Lake, Yunnan Province. J. Lake Sci.1990,2(2):25-30. DOI:10.18307/1990.0204
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根据花粉与藻类化石组合探讨滇池Q3晚期的湖泊环境变迁
萧家仪1, 吴玉书2
1.南京师范大学地理系;2.中国科学院植物研究所, 北京
摘要:
滇池北缘草海地区的草2孔,含丰富的孢粉和藻类化石,根据其成分的变化,并与现代湖底层沉积物中花粉和藻类分布规律进行对比,结果表明距今约50000年以来,滇池经历了由浅湖-大湖(湖进)-浅湖(湖退)的演变过程。
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DOI:10.18307/1990.0204
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Analysis Of The Late Pleistocene Environmental Changes In Dianchi Lake, Yunnan Province
Xiao Jiayi1, Wu Yushu2
1.Department of Geography, Normal University of Nanjing;2.Botany Institute, Academia Sinica, Beijing
Abstract:
There exists a large of aquatic Myriophylhvn and Cyperaceae Pollen and Pediastrum algae fossils in Core Chao-2 in Dianchi, Comparing the pollen and algae fossils with the distribution of sporollen and algae in the surface of Dianchi Lake, it is clearly shown that the lake used to be a shallow lake with the water level shallower than that of the present stage about 40000-50000 yr.(B.P.). The lake basin extended gradually and the lake-level rose slowly up to the maximum of about 4.5m above the present one. But the lake became reduced about 28000yr.(B.P.). At the beginning of the Holocene, the basin began to shrink, the lake-level began to drop down, the whole lake basin was gradually filled up.
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