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引用本文:羊向东,王苏民.呼伦湖、乌伦古湖全新世植物群发展与气候环境变化.海洋与湖沼,1996,27(1):67-72.
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呼伦湖、乌伦古湖全新世植物群发展与气候环境变化
羊向东, 王苏民
中国科学院南京地理与湖泊研究所 南京210008
摘要:
于1990-1993年分别对呼伦湖及乌伦古湖进行了调查,并对其剖面及钻孔进行了孢粉分析,结合14C测年、介形类、硅藻分析资料,对两区孢粉植物群演替、气候与湖泊环境变迁进行了比较。结果表明,10.0kaB.P.前,西北地区湖水位变化与冰川融水有关,东北湖区温凉湿润气候受季风环境影响所致;10.0-7.0kaB.P.及5.0-3.0kaB.P.间,气候干旱,两者受西风带控制;7.0-5.0kaB.P,气候温暖湿润,东亚季风边界推移至我国西北湖区,约2.5-1.0kaB.P.间,季风曾两次在西北湖区作短暂停留,降水略有增多。
关键词:  孢粉组合  古植被  气候与环境
DOI:
分类号:
基金项目:国家自然科学基金!49172119
附件
THE VEGETATIONAL AND CLIMATIC-ENVlRONMENTAL CHANGES IN HULUN LAKE AND WULUNGU LAKE DURING HOLOCENE
Yang Xiangdong, Wang Sumin
Naning Institute of Geogrophy and Limnology, Nanjing 210008
Abstract:
In order to reconstruct environmental changes during Holocene from lake sediment in arid and semi-arid areas in Northeast and Northwest China, Hulun Lake and Wulungu Lake sporo-pollen profiles were analysed from 1990 to 1993. The changes of climate and environment in the two regions are discussed and compared in detail based on sporo-pollen assemblage analysis, diatom and ostracods data, and “C dating. About 10.0kaB.P., the water level was related to melting of glacial ice in the Northwest China and the temperate-wet condition was influenced by monsoon change in Northeast China. About 10.0 - 7.0 kaB.P. and 5.0 - 3.0 kaB.P., westerlies prevailed in these areas during the arid period. About 7.0 - 5.0 kaB.P. , the boundary of the eastern monsoon winds reached to the northwest region. During 2.5 - 1.0 kaB. P., monsoon winds prevailed in the northwest region two times, during which precipitation increased slightly.
Key words:  Sporo-pollen assemblage, Palaeovegetation, Climate and environment
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