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| The Sporo Pollen Assemblage from Postglacial Period in the Paleo-incised Valley of the Yangtze River Delta and Its Palaeoclimate Significance |
| YU Jun-jie, JIANG Ren, LAO Jin-xiu, ZHANG Zong-yan, ZENG Jian-wei, PENG Bo, ZHAO Ling, YANG Zhu-liang |
| Nanjing Centre, China Geological Survey, Nanjing, Jiangsu 210016, China |
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Abstract According to the postglacial sporo-pollen distribution from the typical borehole CSJA6 in the paleo-incised valley of the Yangtze River Delta, combining with the forams analysis and AMS 14C dating of 6 samples, 3 sporo-pollen assemblages with time calibration from below were established: I. Quercus-Lipuidambar-Artemisia-Polypodiacea assemblage, belonging to the early Holocene; II. Quercus-Castanopsis-Cyperaceae-Pteris assemblage, belonging to the early-middle Holocene; III. Quercus-Ulmus-Artemisia-Polypodiacea assemblage, belonging to the middle-late Holocene. These three sporo pollen assemblages reflect the paleoclimate evolution process as cold and dry-hot and wet-warm and dry, which is consistent with the climate environment of China. This research is basically identical with the results of previous studies in this region.
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Received: 16 December 2014
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2015, Vol. 2 
