| 内蒙古克什克腾旗地区距今16 000 a以来的孢粉组合特征与环境变迁 |
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| 关键词:Inner Mongolia vegetation and environmental changes 16 000 a B P |
| 基金项目:国家自然科学基金项目（编号：40002014）;国土资源部2002年自由探索项目（编号：2002402） |
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| 摘要: |
| Vegetation and Environmental Changes in Hexiqten Qi of Inner Mongolia in the Past 16 000 Years |
| Palynological records from Sanyi profile in Hexiqten Qi of Inner Mongolia have revealed the local vegetation and environmental history in the past 16 000 years. A very low total pollen concentration suggests a sparse vegetation and cold-dry climate during Ca.(16 010～)(15 380) a B P. Corresponding to the decreasing humidity, the vegetation was dominated by grassland during Ca.(15 380～)(11 270) a B P. From 11 270 to 9 940 a B P, the vegetation remained to be the grassland, and the raised concentration of the pollen might mean rising temperature and humidity around Hexiqten Qi. Quite a few pollen grains of Ca. (9 940～)(2 320) a B P were found, which might have resulted from the expansion of forests and grassland somewhere around Hexiqten Qi. This change must have been caused by climatic warming and wetting in this time interval. During the last 2 320 a B P, the vegetation in Keqi was dominated by herbs, and the paleoclimate was cold. |
| WANG Yan,WANG Shu-bing,ZHAO Zhi-zhong,QIN Yi,MA Yin-sheng,SUN Ji-min,SUN Hong-yan,TIAN Ming-zhong.2005.Vegetation and Environmental Changes in Hexiqten Qi of Inner Mongolia in the Past 16 000 Years[J].Acta Geoscientica Sinica,26(5):449-453. |
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