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根据固城湖GS_1孔沉积物中硅藻的丰度与组合、色素的含量与有关参数,并结合孢粉、有机碳等分析数据,较详细地讨论了从晚冰期到全新世中期(15.3～6.0ka B.P.)固城湖地区古气候古环境演化的过程。同时尝试把硅藻与色素的结合作为度量湖泊古初始生产力的有效性,以及识别沉积记录有关人类活动的可能性。文中还专门论述了全新世初期海相硅藻出现的层位特点与背景,并与太湖作了比较,这一现象对重新认识长江三角洲地区的古地理环境无疑是十分重要的。
According to the abundance, composition, pigment content and related parameters of diatoms in sediments of GS_1 lake in Gucheng Lake and the analysis data of sporopollen and organic carbon, 6.0ka BP) paleoclimate palaeoclimate evolution in the Gucheng Lake region. At the same time, the combination of diatoms and pigments was tried as a measure of the validity of the initial productivity of lakes and the possibility of identifying sedimentary records about human activities. The paper also discusses the stratigraphic features and background of the marine diatoms in the early Holocene and compares them with the Taihu Lake. This phenomenon is undoubtedly important to re-understand the paleogeographic environment in the Yangtze River Delta.