豫西义马组下含煤段植物群古生态及古气候研究

本文从植物群总体特点入手，结合沉积环境分析和化石埋藏特征对义马组下含煤段植物的古生态进行了研究．根据植物群的生活习性和生境不同，将本区下含煤段植物群划分出二个植物群落──湿地植物群落和低地植物群落，并通过对植物群的组成成分、叶相进行分析和复合分异度、均衡度计算，认为本区植物群当时是一种生活于暧温带──潮湿气候条件下的植物群．

STUDY ON THE PALEOECOLOGY AND PALEOCLIMATE OF THE FLORA FROM THE LOWER COAL-BEARING MEMBER OF YIMA FORMATION IN WESTERN HENAN

Based on the floral characteristics, analysis of sedimentary environments and buriedtypes of fossil plants, the authors systematically discuss the paleoecology of the flora fromthe lower coal-bearing member of Yima Formation in western Henan. According to the different living habits and habitats of the plants, the authors subdivide the present flora intotwo noral communities-the wetland community and the lowland community. The authors recognize that this flora lived in the warm temperate and moist climate by the analysis of composition of flora and foliar physiognomy and the calculations of diversity (H(S)) and equitability (E).