• 责任者：Xiao Chuantao （Key Laboratory of Exploration Technologies for Oil and Gas Resources ; Ministry of Education ; Yangtze University ; Jingzhou 434023 ; China） ; Ding Jing
• 刊名：Acta Sedimentologica Sinica
• 出版年：2009
• 卷期：27(2)
• 关键词：中二叠世 ; Middle Permian ; 古生态学 ; paleoecology ; 扬子地区 ; Yangtze Region
• 页码：p.319-325
• 图表：2 illus., 2 tables, 9 refs.
• 分类号：1200
• issnNo：ISSN1000-0550
• isbnNo：CN62-1038/P

The authors firstly make a study on Palaeoecology in upwelling phase region of Middle Permian in the Lower Yangtze area. The Qixia Formation is divided into five sedimentary ages, and the organic communities are recognized in this paper, at the same time, compositions, structures and ecologic environments are also discussed. Based on the analysis of characters of community association and deposition, two kinds of biofacies are recognized, namely benthonic biofacies of shelf glacis and planktonic biofacies of shelf basin ,the relationship between biofacies and intensity of upwelling current is elucidated in the paper. Finally, the analysis of the control of upwelling current on paleoecologic features demonstrates that the intensity of upwelling current corresponds to abundance of organic community and discords from diversity.