滇东黔西晚二叠世裸子植物矿化化石及古气候研究

中国裸子植物区系类群多样，起源古老，起源的时间可以追溯到古生代的泥盆纪，中国西南地区是全球５个裸子植物特有中心之一，也是晚二叠世植被发育最好的地区。本项目以滇东黔西晚二叠世裸子植物的矿化化石为研究对象，详细研究该地区晚二叠世裸子植物的解剖构造、组成特征，探讨其分类多样性，并通过对比研究，揭示其起源、系统发育和演化关系，同时结合相关研究成果，恢复本区晚二叠世的古植被和古气候。本项目是首次从解剖构造方面来系统地研究滇东黔西地区晚二叠世裸子植物的区系特征，由于晚二叠世是裸子植物演化史上具有特殊意义的时期，因此，本项目的研究不仅能更好地揭示本区晚二叠世裸子植物的分类多样性、系统发育和演化关系，并为探讨我国西南地区现代裸子植物区系和植被的历史由来提供重要的古生物学依据，对科学保护本区生物多样性以及研究当今全球变化也具有一定的理论意义。

The gymnosperm floras of China are diversity and originated from Devonian of Palaeozoic.The southwest China is one of the five gymnosperm biodiversity centers in the world and the best area of vegetation growth in the Upper Permian.In this project we are going to focus on the anatomical structures, compositional specialty and taxonomic diversity of the permineralized gymnosperms from the Upper Permian of eastern Yunnan and western Guizhou,and the origin, phylogeny and evolution of gymnosperms are investigated through comparison. Combined with result of related research, we will try to recover the palaeovegetation and palaeoclimate of this area in Upper Permian. This research is the first work to study the flora characteristics of gymnosperms from the Upper Permian of eastern Yunnan and western Guizhou in anatomical structure aspect.Because the Upper Permian is the most significant period in gymnosperms evolution ,this research can not only explain the taxonomic diversity, phylogeny and evolution of gymnosperms from the Upper Permian of eastern Yunnan and western Guizhou,but also provide important Palaeontological evidence for the history of extant gymnosperms flora in southwest China. Furhtermore, the results will support the biodiversity conservation in this area and study on global change theoretically.