东北地区末次盛冰期以来孢粉数据库构建技术与应用

Construction Technology and Application of Sporopollen Database since the Last Glacial Maximum in Northeast China

孢粉数据库是研究区域尺度的古环境演变历史、古气候变化规律等重要的基础数据。对东北地区末次盛冰期以来71条孢粉序列进行数据处理。首先,重新计算各种属的百分比;其次,校正年代并建立年代序列;最后,以1000年的分辨率插值孢粉序列。由此,构建了标准统一的孢粉数据库,结合GIS技术展示了数据库信息,并重建了东北地区古植被演化的特征。该数据库可有效应用于东北地区古环境演化等研究。

The pollen dataset is an important basic data for the study of the history of paleoenvironmental evolution and the pattern of paleoclimate change at the regional scale.In this study,71 pollen sequences from the Last Glacial Maximum in Northeast China were processed.Firstly,the percentages of each pollen taxa were recalculated;Secondly,revised the chronology,and the age models were regenerated;Finally,the pollen sequences were interpolated with a 1000-year resolution.Therefore,a standardized and harmonized fossil pollen database has been established,and the database information was displayed in combination with GIS technology,and the characteristics of paleovegetation evolution in Northeast China were reconstructed.The dataset can be effectively applied to the study of paleoenvironmental evolution in Northeast China.