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古地理学报 ›› 2006, Vol. 8 ›› Issue (1): 35-41. doi: 10.7605/gdlxb.2006.01.004

• 生物古地理学及古生态 • 上一篇    下一篇

上海东部地区全新世孢粉组合及古植被和古气候

张玉兰     张敏斌    

  1. 1 同济大学海洋与地球科学学院 上海 200092
    2 华东师范大学河口海岸国家重点实验室 上海 200062
  • 出版日期:2006-02-01 发布日期:2006-02-01
  • 作者简介:张玉兰, 女, 1946年生, 1969年毕业于华东师范大学地理系,现为同济大学海洋与地球科学学院教授,博士生导师,主要从事孢粉、藻类、第四纪地质研究。E-mail: Zhangyl@mail.tongji.edu.cn

Palynological assemblages and palaeovegetation and palaeoclimate of  the Holocene in eastern part of Shanghai

Zhang Yulan       Zhang Minbin   

  1. 1 School of Ocean & Earth Science, Tongji University, Shanghai  200092
    2 State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai  200062
  • Online:2006-02-01 Published:2006-02-01
  • About author:Zhang Yulan, born in 1946, was graduated from the Geography Department of East China Normal University in 1969. Now she is a professor in the School of Ocean & Earth Science, Tongji University, and is engaged in palynology, algology and Quaternary Geology. E-mail: Zhangyl@mail.tongji.edu.cn

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摘要：

通过对上海东部地区南汇鹤鸣Hm孔、东海Dh1井、高桥G2孔3口钻井全新世地层的孢粉研究，划分出5个孢粉组合带和3个亚带，恢复了本地区古植被演替和古气候波动的5个阶段：第1阶段为针阔叶混交林—草地，反映气候温凉略湿（前北方期）；第2阶段为含常绿阔叶树的针阔叶混交林，反映气候温和略干（北方期）；第3阶段为以常绿栎类、栲属、杨梅等为主的常绿阔叶林，反映气候热暖潮湿（大西洋期）；第4阶段是以栎、松、禾本科为主的针阔叶混交林，反映气候温暖略干（亚北方期）；第5阶段是以落叶栎类、常绿栎类、松为主的落叶阔叶、常绿阔叶、针叶混交林—草地，反映气候温暖湿润（亚大西洋期）。这为本地区的地层年代划分和对比提供了可靠的证据，为全新世古植被、古气候及古环境的重建提供了重要的孢粉学资料。

Abstract:

 Through an intensive study on pollen and spores from the cores of Hm, Dh1 and G2 in eastern part of Shanghai, five palynological assemblages and three sub-assemblages have been distinguished. The five stages about the evolution of palaeovegetation and palaeoclimate which are reconstructed in the Holocene in this area are as follows: the mixed forest of conifers and broad-leave trees—grassland, reflecting a temperate and little moist climate(sub-arctic period); the mixed forest of conifers and broad-leave trees with a few kinds of evergreen broad-leave trees, reflecting a temperate and slightly dry climate(Boreal period); the evergreen broad-leave forest being mainly composed of Quercus(evergreen) and Castanopsis, indicating a hot and moist climate(Atlantic period);the mixed forest of conifers and broad-leave trees, taking Quercus, Pinus and Gramineae as the main elements in palynological assemblages, reflecting a warm and little dry climate (Sub-Boreal period); the mixed forest of deciduous broad-leaves, evergreen broad –leaves and conifers-grassland, with Quercus (deciduous, evergreen) and pines being the main components, reflecting a warm and moist climate (Sub-Atlantic period). The study provides reliable evidences for the division and correlation of the ages of the sediments in this region and also provides important palynological information for the reconstruction of palaeovegetation, palaeoclimate and palaeoenvironment of the Holocene in this area.