白垩纪以来地外星体撞击效应对植物演化影响的新思索  

MEDITATION ON PLANT EVOLUTION INFLUENCED BY BOLIDE-IMPACT EVENTS SINCE CRETACEOUS

作　　者：李承森[1] 王宇飞[1] 孙启高[1] 耿宝印[1] 宋书银[1] 陈永亨[2] 

机构地区：[1]中国科学院植物研究所,北京100093 [2]中国科学院广州地球化学研究所,广州510640

出　　处：《中国科学基金》1998年第1期21-25,共5页Bulletin of National Natural Science Foundation of China

摘　　要：地外星体撞击引发的全球环境变化的巨大效应日益受到关注。植物作为敏感的环境指示,从植被组成和演替、类群分布和分化、形态和结构、细胞与分子生物学等不同层次上,对这种撞击引发的全球变化都应有所反映。从地学与生物学角度,协同研究撞击效应与植物演化的相互关系及相互作用的过程与规律,成为有关学科发展的前沿。Global environmental changes induced by bolide-impact on the earth have attarcted more and more attention recently. Plant kingdom, as sensitive bio-index to environmental changes, should have responded to such kinds of bolide-impact effect at different levels of vegetation succesion, taxon differentiation, morphological and anatomical features, even molecular biology, etc. The important events of bolide-impact since Cretaceous were responsible for the progress of plant evolution. To explicate the courses and laws of interaction between bolide-impact effect and plant evolution, using combinative methods of biology and geology, becomes a new highlight.

关 键 词：白垩纪 地外星体 陨星撞击效应 植物演化 

分 类 号：Q914.5[天文地球—古生物学与地层学] X173[生物学—古生物学]