mal style="MARGIN: 0cm 0cm 0pt">man">Palaeovegetation and Environmental Evolution in Hengshui District of mas-microsoft-com:office:smarttags" />Hebei Province since 3.50 Ma B.P.mas-microsoft-com:office:office" />

• 责任者：Fan Shuxian (Institute of Hydrogeology and Environmental Geology ; CAGS ; Shijiazhuang 050061 ; China) ; Liu Haikun
• 刊名：Geoscience
• 出版年：2009
• 卷期：23(1)
• 关键词：上新世 ; Pliocene ; 第四纪 ; Quaternary ; 古环境 ; paleoenvironment ; 孢粉组合 ; palynological assemblage ; 河北 ; Hebei Province
• 页码：p.75-81
• 图表：3 illus., 15 refs.
• 分类号：1200
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

mal style="MARGIN: 0cm 0cm 0pt">man">Based on the analysis of the spore-pollens in 529 core samples from mas-microsoft-com:office:smarttags" />600 m deep borehole HS1 drilled in Nanzhangzhuang Village of Hengshui District, Hebei Province and in combination with the chronostratigraphic framework recovered by the palaeomagnetic and optical luminescent dating, the spore-pollen assemblage sequences in Hengshui District of Central Hebei Plain since 3.50 Ma B.P. have been established. The spore and pollen were not abundant and their assemblage structures were simple, indicating that there was not much change in precipitation and temperature, and that the climate was warm and humid by the gradual transition to the cold and dry. mas-microsoft-com:office:office" />