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介绍孢粉生态群(Sporomorph EcoGroup,简称SEG)模型的概念、方法及应用。孢粉生态群由荷兰学者Abbink等于1998年最早提出,定义了包括高地、低地、河流、先驱、海岸及潮汐六种SEG类型,并确立了相关古环境的指示参数。该模型成功应用于中生代非海相地层的高分辨率古环境重建、古气候波动及海平面变化等领域的分析与研究。与传统孢粉地层学相比,孢粉生态群模型的优势在于在对高分辨率孢粉记录进行半定量化研究的基础上,可以进行详细的古生态古环境解释,尤为重要的是可以反映出古气候、古环境的波动变化。该模型在中生代孢粉学中率先得到成功应用,涉及三叠纪—白垩纪地层及若干重要地质事件,为中生代非海相地层古环境重建研究提供了有效途径和成功范例,对于我国陆相中生代地层及古环境研究具有积极借鉴意义。
The concept, method and application of Sporomorph EcoGroup (SEG) model are introduced. Pollen ecological group was first proposed by Dutch scholar Abbink in 1998, which defined six SEG types including highland, lowland, river, pioneer, coast and tide and established the indication parameters of paleoenvironment. The model has been successfully applied to the analysis and research of Mesozoic non-marine strata in the areas of high resolution paleoenvironment reconstruction, palaeoclimatic fluctuation and sea level change. Compared with the traditional sporopollen stratigraphy, the advantage of the pollen ecological model is that it can explain the ancient paleoenvironment in detail based on semi-quantitative analysis of the high-resolution sporopollen records, and it is especially important that it can reflect Paleoclimate, paleoenvironmental fluctuations change. The model was the first to be successfully applied in the Mesosphere Paleozoology, involving the Triassic-Cretaceous strata and several important geological events. It provides an effective way and successful example for paleoenvironment reconstruction of Mesozoic non-marine formations. Stratigraphy and paleoenvironment research has a positive reference.