特征指示种花粉雨研究，对古生态环境重建也具有重要的意义。
The study on pollen rain of characteristic indicator species has important significance for reconstructing paleo_ecological environment.
这些冻原植物花粉形态的研究为恢复北极地区古植被和古气候的研究，提供了有价值的对比资料和依据。
Investigation on pollen grains of tundra plants can provide significant data for comparative study of fossil pollen and for reconstruction of paleovegetation and paleoclimate in the Barrow area.
因此，在古环境研究中，区分局部性与区域性花粉谱变化有着重要的意义。
Accordingly, it is important to distinguish the local and regional pollen spectra in terms of the reconstruction of environmental history.
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