[关键词]
[摘要]
本文对地层中广泛分布的松柏类和菊科花粉进行初步分类,讨论各类型(属)的鉴定特征及生态意义.以气囊的有无、外壁结构和纹饰、气囊的形态和纹饰、本体与气囊过渡点的特征、帽与帽缘纹理等为鉴定要点,对杉型、柏科型、刺柏型、红豆杉型、落叶松属、铁杉属、罗汉松属、云杉属、雪松属、冷杉属、油杉属和松属(双束松型和单束松型)13个类型的松柏类植物花粉逐步分类.通过总结前人研究和统计分析,讨论落叶松属、铁杉属、罗汉松属、云杉属、雪松属、冷杉属、油杉属和松属,特别是双束松型和单束松型花粉的生态环境指代意义.依据花粉的大小、外壁表面纹饰、外壁光切面中基柱层的结构和发育程度,初步拟将菊科花粉划分为6个类型,即菊苣-蒲公英型、紫菀型、春黄菊型、风毛菊型、蓝刺头型和蒿属,并通过对6个花粉类型植物母体生态环境的归纳总结和统计分析,讨论它们的生态环境指代意义.
[Key word]
[Abstract]
This paper represents the master keys for taxonomic identification of Coniferopsida and Compositae pollens which exist broadly in sedimentary strata,and their ecological significance. Thirteen types(Taxodiaceae,Cupressaceae,Juniperus,Taxaceae,Larix,Tsuga,Podocarpus,Picea,Cedrus,Abies,Pinus(Diploxylon),Pinus(Haploxylon) and Keteleeria) were classified stepwisely according to the presence/absence of saccus,the structure and sculpturing of extine,the morphology and sculpturing of saccus,the feature of transiti...
[中图分类号]
Q949
[基金项目]
国家自然科学基金，教育部科技重大项目?
