| 引用本文: | 张恩楼,沈吉,王苏民,夏威岚,金章东.青海湖近900年来气候环境演化的湖泊沉积记录.湖泊科学,2002,14(1):32-38. DOI:10.18307/2002.0105 |
| ZHANG Enlou,SHEN Ji,WANG Sumin,XIA Weilan,JIN Zhangdong.Climate and Environment Change during the Past 900 Years in Qinghai Lake. J. Lake Sci.2002,14(1):32-38. DOI:10.18307/2002.0105 |
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| 摘要: |
| 通过对青海湖沉积物碳酸盐含量、磁化率、TOC等多环境指标的分析,探讨了青海湖地区近 900年来的气候环境演变.结果表明青海湖地区近 900年来气候变化属于暖干-冷湿的气候演替类型,经历了 5次冷湿期和 5次暖干期,中世纪暖期、小冰期以及 2 0世纪以来的升温在该沉积岩芯有清晰的记录.沉积物的磁化率和沉积速率的变化忠实地记录了本世纪以来人类活动的影响. |
| 关键词: 青海湖 湖泊沉积 气候变化 |
| DOI：10.18307/2002.0105 |
| 分类号: |
| 基金项目:国家自然科学基金(40072056,40003001);中科院知识创新工程项目(KZCX-10-01) |
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| Climate and Environment Change during the Past 900 Years in Qinghai Lake |
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ZHANG Enlou, SHEN Ji, WANG Sumin, XIA Weilan, JIN Zhangdong
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Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China
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| Abstract: |
| Qinghai Lake is the biggest brackish lake of China.It lies in the northeast of the Tibet Plateau.That the location of the lake is influenced by the East monsoon,Siberian-Mongolian monsoon and the Westerlies enables its deposits record the climatic and environmental change sensitively. Based on the analyses of environmental proxies (magnetic susceptibility,carbonate content,TOC etc.),we reconstructed the environment change of Qinghai Lake in the past 900 years Itis indicated reliably by the results that this area has undergone five periods of warm and dry as well as five periods of wet and cold during the past 900 years.The existence of Mediaeval Warm Age Little Ice Age are obvious and the temperature has been rising since the 20th century.Human activity from the 1950's was reflected by magnetic susceptibility clearly. |
| Key words: Qing hai Lake lake sediment climate change |
