| 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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| 引用本文：王燕,王书兵,赵志中,秦义,马寅生,孙继民,孙红艳,田明中.2005.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[J].地球学报,26(5):449-453. |
| DOI：10.3975/cagsb.2005.05.09 |
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| 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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| 中文摘要:本文通过对三义黄土剖面孢粉资料的分析，初步重建了内蒙克旗地区16000a以来植被及环境的变迁过程。约16010～15380a B P，植被稀疏，气候寒冷而干燥；约15380～11270a B P，植被以草本植物为主，气候变得更加干旱；约11270～9940a B P，气候总体上由先前的冷干开始向暖湿方向发展，植被仍以草原为主；约9940～2320a B P，植被得到进一步发展，气候表现出温暖湿润的特征；约2320a B P至今，植被仍以草原为主，气候向温凉方向发展。 |
| 中文关键词:内蒙古 植被与环境变迁 16 000a BP |
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| Vegetation and Environmental Changes in Hexiqten Qi of Inner Mongolia in the Past 16 000 Years |
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| Abstract: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. |
| keywords:Inner Mongolia vegetation and environmental changes 16 000 a B P |
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