云贵地区晚二叠世矿化植物及古环境研究

二叠纪末的生物集群绝灭事件是显生宙以来生物大绝灭事件中最大的一次，导致了大规模海洋物种的消失。近年来的大量研究对这次灾难性的地质事件取得了不少突破性进展，但由于缺少保存有解剖构造的矿化植物化石研究的直接证据，陆地生态系统特别是陆生植物在这次绝灭事件中经历了怎样的变化，以及在向中生代过渡之前的演化状况如何目前仍然知之甚少。云贵地区大量保存的晚二叠世矿化植物化石无疑对深入了解晚二叠世植物的结构特征、演化分异，以及开展植物群落的古气候学与古环境研究提供了珍贵材料。本项目以云贵地区矿化植物为研究对象，详细研究该区晚二叠世各类植物的解剖构造、组成特征，了解其分类多样性；结合相关研究成果，恢复本区晚二叠世的古植被和古环境。本项目的研究不仅能更好地揭示云贵地区晚二叠世植物的分类多样性、系统发育和演化关系，并为探讨我国西南地区现代植物区系和植被的历史由来提供重要的古生物学依据。

The end-Permian mass extinction is the largest biotic crisis among the extinctions in the Phanerozoic, manifested by the disappearance of large number of marine organisms. Recent investigations have made significant contributions to the understanding of geological events during the end-Permian mass extinction. However, the terrestrial ecosystem, especially, land plants during this disaster was poorly understood, due to the critical lack of perminralized plant evidence. Well-preserved late Permian petrified plants from Yunnan-Guizhou area will not only benefit the anatomical diversity and evolution of the land plants but will also helpful for the understanding of the palaeoclimate and palaeoenvironment changes during the end Permian. In this project we are going to focus on the anatomical structures, compositional specialty and taxonomic diversity of petrified plants from the late Permian of Yunnan-Guizhou area. The origin, phylogeny and evolution of plants are also investigated through comparison. By combining with results from the related researches, we are trying to recover the palaeovegetation and palaeoenvironment of this area in late Permian.This research can not only explain the taxonomic diversity, phylogeny and evolution of plants from late Permian of Yunnan-Guizhou area, but also provide important Palaeontological evidence for the history of extant plant flora in southwest China.