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.
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.
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