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Sporopollen analysis of Core B10 in the southern Yellow Sea and the reflected characteristics of climate changes

机译:黄海南部B10岩心的孢粉分析及气候变化特征

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Eight sporopollen zones have been divided based on the results of high-resolution sporopollen analysis of Core B10 in the southern Yellow Sea. Based on the results along with ~(14)C datings and the subbottom profiling data, climatic and environmental changes since the last stage of late Pleistocene are discussed. The main conclusions are drawn as follows: (1)the vegetation evolved in the process of coniferous forest-grassland containing broad-leaved trees → coniferous and broad-leaved mixed forest → coniferous and broad-leaved mixed forest-grassland prevailed by coniferous trees → coniferous and broad-leaved mixed forest-grassland containing evergreen broad-leaved trees → coniferous and broad-leaved mixed forest-grassland prevailed by broad-leaved trees → deciduous broad-leaved forest-meadow containing evergreen broad-leaved trees → coniferous and broad-leaved mixed forest-grassland prevailed by broad-leaved trees → coniferous and broad-leaved mixed forest containing evergreen broad-leaved trees; (2) eight stages of climate changes are identified as the cold and dry stage, the temperate and wet stage, the cold and dry stage, the warm and dry stage, the temperature and wet stage, the hot and dry stage, the temperate and dry stage, then the warm and dry stage in turn; (3) the sedimentary environment developed from land, to littoral zone, to land again, then to shore-neritic zone; and (4) the Yellow Sea Warm Current formed during early Holocene rather than Atlantic stage.
机译:根据对黄海南部B10岩心的高分辨率孢粉分析结果,划分了八个孢粉区。根据结果​​以及〜(14)C测年和下层剖面资料,讨论了晚更新世末期以来的气候和环境变化。主要结论如下:(1)针叶林—阔叶混交林→针叶阔叶混交林→针叶林占优势的针阔混交林→草地→植被→植被→植被含常绿阔叶树的针叶阔叶混交林地→阔叶树占优势的针叶阔叶混交林地→含常绿阔叶树的落叶阔叶林地→针叶阔叶林阔叶乔木占优势的阔叶混交林草地→含有常绿阔叶树的针叶阔叶混交林; (2)确定了气候变化的八个阶段,分别为干冷阶段,温带湿阶段,冷干阶段,暖干阶段,温湿阶段,干热阶段,温带和湿热阶段。干燥阶段,然后依次是温暖干燥阶段; (3)沉积环境从陆地发展到沿海地区,再到陆地,再到海岸-神经质区; (4)全新世早期而不是大西洋时期形成的黄海暖流。

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