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本文通过分析西藏米拉山东、西坡不同植被类型23个表土花粉样品,结合现代植被样方调查资料,探讨了米拉山地区表土花粉组合与现代植被的关系。结果显示,米拉山地区的表土花粉组合特征基本上能够反映出现代植被类型特征,但是在科属类别,组成方面又存在一定的差异性。同时,米拉山地区主要花粉类型代表性R值分析结果表明,灌木植物花粉杜鹃属具有低代表性,草本植物花粉蒿属、禾本科具有超代表性,而莎草科与蓼属则具有低代表性,这为本地区及相似地区古气候重建提供了基础和验证资料。
In this paper, 23 topsoil pollen samples from different vegetation types in the eastern and western slopes of Mount Mira in Tibet were analyzed, and the relationship between topsoil pollen assemblages and modern vegetation in the Mount Mila region was discussed. The results show that the characteristics of topsoil pollen assemblages in Mount Mila region can basically reflect the characteristics of modern vegetation types, but there are some differences in the taxonomic category and composition. At the same time, the representative R value analysis of the main pollen types in Mount Mila showed that the genus Rhododendron of shrubs is low-representative, the herbaceous plants of Artemisia and Poaceae are super-representative, while the Cyperaceae and Polygonaceae have low Representation, which provides the basis and verification information for palaeoclimate reconstruction in this area and similar areas.