| 辽西地区义县组植物群古生态研究 |
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| 引用本文： | 丁秋红,张立东,郭胜哲,张长捷,彭艳东,贾斌,陈树旺,邢得和.辽西地区义县组植物群古生态研究[J].地质与资源,2003,12(1):9-18. |
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| 作者姓名： | 丁秋红 张立东 郭胜哲 张长捷 彭艳东 贾斌 陈树旺 邢得和 |
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| 作者单位： | 1. 东北大学 资源与土木工程学院, 辽宁 沈阳 110004;2. 沈阳地质矿产研所, 辽宁 沈阳 110033 |
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| 基金项目： | 中国地质调查局“K15E014004(北票市)等四幅1:5万区域地质调查”项目(编号 19991300008011)阶段性研究成果 |
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| 摘 要： | 对产于辽西北票地区不同地点义县组二段湖相含珍稀化石沉积岩层中的植物化石时行了系统的总结研究.应用现代植物生态学的原理和方法,根据义县组植物群的组成特征和分类群生态学分析,研究了义县组植物群所反映的古生态特征,并划分出4个古植物群落.通过义县组植物群的叶相特征与现代不同气候带植被的对比,推断义县组时期的古植被面貌总体指示了亚热带-暖温带温暖湿润气候条件下的植被景观.同时,认为存在季节性干旱、半干旱气候条件.
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| 关 键 词： | 植物群古生态 义县组 辽宁西部 |
| 文章编号： | 1671-1947(2003)01-0009-10 |
| 收稿时间： | 2002-07-02 |
STUDY ON THE PALEOECOLOGY OF YIXIAN FORMATION IN BEIPIAO AREA, WESTERN LIAONING PROVINCE, CHINA |
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| DING Qiu-hong,ZHANG Li-dong,GUO Sheng-zhe,ZHANG Chang-jie,PENG Yan-dong,JIA Bin,CHEN Shu-wang,XING De-he.STUDY ON THE PALEOECOLOGY OF YIXIAN FORMATION IN BEIPIAO AREA, WESTERN LIAONING PROVINCE, CHINA[J].Geology and Resources,2003,12(1):9-18. |
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| Authors: | DING Qiu-hong ZHANG Li-dong GUO Sheng-zhe ZHANG Chang-jie PENG Yan-dong JIA Bin CHEN Shu-wang XING De-he |
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| Institution: | 1. Institute of Resources and Civil Engineering, Northeast University, Shenyang 110004, China;2. Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China |
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| Abstract: | The specimens of fossil plants studied in this paper are collected from the second member of Yixian for-matiom at different fossil locastibns in Beipiao area, Western Liaoning. The feathered dinosaurs, primitive birds, some reptilian and insect fossils as well as early angiosperm are from the sedimentary strata of laustrine facies(2nd member of Yixian F. ) . Applying the theory and method of modern phytoecology, the conditon of paleoecology shown by fossil flora are analyzed and discussed. Four fossil communities are set up based on the composition characters of flora and the analysis on the ecology of taxonomic group, i.e. (1) hygrophyte from intracoastal + calcophic vegetation in shallow water: Equisetites longevaginatus + Beipiaoa spinosa Community; (2) lowland - slow-slope: Tjrmia acrodonta + Co-niopteris burejensis Community; (3) intermontane upland: Liaoningocladus boii + Baiera borealis Community; and (4) xerophyte: Pagiophyllum + Gurvanella exquisite Community. By comparing the leaf feature between Yixian flora and modem vegetation in different climatic zones, the Yixian flora indicates a subtropic-warm temperate zone with warm wetness weather. At the same time, the occurrence of deciduous Ginkgoales represents a seasonal variation of the climate. The features of xerophilous Gnetales, Bennettiales with membranous leaves and Conifersles with scaled leaves may indicate a seasonal arid or semi-arid climate condition. |
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| Keywords: | paleoecology Yixian formation fossil flora Western Liaoning |
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