长白山阔叶红松林木本植物繁殖特征及其关联性  

Reproductive traits and their correlation among woody plants in a broadleaf-Korean pine(Pinus koraiensis) mixed forest in Northeast China

作　　者：王芸芸[1,2] 师帅[1,2] 蔺菲[1,2] 原作强[1] 叶吉[1] 王绪高[1] 郝占庆[1] 

机构地区：[1]中国科学院沈阳应用生态研究所、森林与土壤生态国家重点实验室,沈阳110016 [2]中国科学院大学,北京100049

出　　处：《科学通报》2014年第24期2407-2415,共9页Chinese Science Bulletin

基　　金：国家自然科学基金(41301057和31300517)资助

摘　　要：为了探究群落水平上木本植物有性繁殖特征及其关联性,对长白山阔叶红松林25 hm2大型动态监测样地内木本植物进行了调查分析.结果表明:(ⅰ)该森林木本植物在繁殖性状方面表现出复杂的多样性,同时,不同繁殖特征如性系统与传粉方式、果实类型之间,以及与种子质量和生活型等生态特征之间存在关联性;(ⅱ)样地内49%的物种是两性花植物,27.5%是雌雄同株植物,23.5%为雌雄异株植物,雌雄同株植物所占比例与热带森林相比偏高;(ⅲ)不同性系统的物种花期基本同步,而果期则表现出较大的差异;(ⅳ)和热带、亚热带森林的研究结果类似,性系统和传粉方式、果实类型、生活型之间都表现出明显的相关性;(ⅴ)不同性系统之间种子质量差异显著,雌雄同株的种子质量最大,两性花的最小.另外,不同生活型的种子质量之间也存在着明显差异,乔木种子较灌木种子更轻.总体来看,长白山阔叶红松林各繁殖性状之间有复杂的关联性,而且还表现出"常见种以虫媒传粉、雌雄同株的树种居多"这一温带森林独有的特点.We examined the sexual reproduction of woody plants in a 25-hm2 plot of broadleaf-Korean pine （Pinus koraiensis） mixed forest in the Changbai Mountains, Northeast China. Reproductive traits differed among species, and sexual systems were associated with pollination syndromes, fruit types, seed mass and life forms. Among the species present in the plot, 49% were hermaphroditic, 27.5% were monoecious and 23.5% were dioecious. The percentage of monoecious species in the forest studied was higher than that of tropical forests. The flowering phenology among species was almost synchronous, whereas fruiting phenology varied greatly among species. Seed weight differed dramatically among different sexual systems and between life forms. Monoecious species produced the heaviest seeds, whereas hermaphroditic species produced the lightest seeds. Seeds of shrubs were heavier those of trees. In general, complex correlations were observed among reproductive traits and ecological characteristics in the broadleaf-Korean pine mixed forest, which was characterized by a generally entomophilous pollination syndrome among the common species and a high proportion of monoecious species.

关 键 词：长白山阔叶 红松林 繁殖特征 性系统 生活型 种子质量 

分 类 号：Q948[生物学—植物学]