地震地质 ›› 1991, Vol. 13 ›› Issue (3): 259-268.

• 科研简报 • 上一篇    下一篇

华北平原东部地区晚更新世以来的孢粉序列与气候分期

童国榜1, 张俊牌1, 严富华2, 麦学舜2   

  1. 1. 地矿部水文地质工程地质研究所, 正定 050803;
    2. 国家地震局地质研究所, 北京 100029
  • 收稿日期:1990-03-31 出版日期:1991-09-04 发布日期:2009-11-25

SPORO-POLLEN SEQUENCE AND DIVISION OF CLIMATIC PERIOD IN THE EASTERN NORTH CHINA PLAIN SINCE LATE PLEISTOCENE

Tong Guo-bang1, Zhang Jun-pai1, Yan Fu-hua2, Mai Xui-shun2   

  1. 1. Institute of Hydrogeology and Engineering Geology, Ministry of Geology and MineralResources, Zhengding 050803;
    2. Institute of Geology, State Seismoloogical Bureau, Beijing 100029
  • Received:1990-03-31 Online:1991-09-04 Published:2009-11-25

摘要: 本文应用图象识别方法,对华北平原东部地区(宝坻—濮阳)的五口井和一个剖面的孢粉资料进行了研究,将本区晚更新世晚期一全新世地层划分为五个孢粉组合带,七个孢粉组合亚带,共建九个孢粉植物群演化阶段。在此基础上根据植物生态特征,探讨了两万年以来的气候演变,确立了九个气候期,并发现全新世以来气候变化具有八次明显的降温及七次升温过程,存在着二千五百年及千年左右的波动周期。

关键词: 晚更新世, 全新世, 孢粉序列, 气候期

Abstract: In this paper the palynological data from six drill sections in the eastern North China plain are analysed by using the pattern recognition (stereopicture). The late Pleis-tocene-Holocene stratigraphy is divided into five sporo-pollen complex zones and seven sporo-pollen complex subzones. Nine stages of evolution of sporoflora are established. On the basis of these data in combination with ecological characteristics of the flora, a climatic evolution in the region for 20000 years is discussed and nine climatic phases are determined. It is found that there were eight apparently decreasing temperature stages and seven increasing temperature stages in the climatic evolution since the Holocene, and their fluctuation cycles are 2500 and 1000 years, respectively.

Key words: Late Pleistocene, Holocene, Sporo-pollen sequence, Climatic period, North China plain