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冰川冻土 ›› 1995, Vol. 17 ›› Issue (2): 132-137.doi: 10.7522/j.issn.1000-0240.1995.0017

• 研究论文 • 上一篇    下一篇

孢粉记录揭示的2万年以来若尔盖地区的气候变化

刘光锈1, 沈永平1, 王睿1, 王苏民2   

  1. 1. 中国科学院兰州冰川冻土研究所, 730000;
    2. 中国科学院南京地理与湖泊研究所, 210008
  • 收稿日期:1994-04-25 修回日期:1994-09-19 出版日期:1995-05-25 发布日期:2012-04-26
  • 基金资助:

    国家自然科学基金

The Vegetation and Climatic Changes in Zoige During the Last 20000 years Determined by Pollen Records

Liu Guangxiu1, Shen Yongping1, Wang Rui1, Wang Suming2   

  1. 1. Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences, 730000;
    2. Naijing Institute of Geography and Lakes, Chinese Academy of Sciences, 210008
  • Received:1994-04-25 Revised:1994-09-19 Online:1995-05-25 Published:2012-04-26

摘要: 若尔盖黑河牧场DC剖面的孢粉记录表明,末次冰期晚阶段若尔盖高原的气候表现为不稳定性,即冷暖变化频繁,其基本变化与全球一致。相对暖的阶段发生在20-18kaBP,16-15kaBP和13-11.2kaBP;相对冷的阶段在18-16kaBP,15-14kaBP和11.2-10.2kaBP.其中末次冰期最盛期发生于18-16kaBP,11.2-10.2kaBP的降温可对应于YoungerDryas事件。10.2kaBP开始,气温回升,全新世来临。9-3kaBP为全新世大暖期,其中,7kaBP左右达鼎盛期;6-5kaBP间有一次冷的波动。

关键词: 孢粉记录, 若尔盖, 气候变化

Abstract: The pollen records from Zoige, located in the northeastern Tibetan Plateau, indicate that the climate in this area was unstable during the last 20000 years. The relative warm periods took place about 20-18, 16-15, 13-12, 11-6, 5-3kaBP, the cold ones occured about 18-16, 15-14, 12-11 and 6-5kaBP. Last Glacial Maximum was about 18-16kaBP. The cold event of 12-11kaBP could correspond with Younger Dryas. From 11kaBP the forest vegetation was developing, which represented the coming of Holocene.During 9-3kaBP, the coniferous and deciduous broadleaf forest showed the Holocene Megathermal and reached the maximum about 7-6kaBP as Rhus and Castanea presented inthe forest. About 6-5kaBP absence of pollen might reflect a cole climate in Holocene.

Key words: pollen records, Zoige, climatic changes