<正>对我国树木营养器官进行分类,提出了树木类型的特征与检索,并对科、属、种作全面统计和分析。结果表明我国野生和引种的树木共213科1549属11942种,单叶树种多于复叶树种,单叶的属、种各占66%及78%,复叶的属、种各占20%及16%。如按单叶脉型统计,羽状脉的属、种各占71%及77.5%,掌状脉的属、种各占24%及16%,纵向平行脉的属、种各占5%及6.5%。在对各个类型的代表树种及科属划分的主线作归纳和研讨的基础上,从分枝式、髓型、芽型、维管束型、三级及较高度的脉序、内含物及附属物等提出了树木营养器官分类探索的线索与途径。

Eight types of vegetative organs were suggested with regard to the trees in China.Also an overall statistics and analysis had been given to the correlation between the characteristics of tree types and their tesonomical characters:family, genera and species.In China,there are 11 942 tree species,including wild and cultivated one,belong to 213 families and 1 549 genera.Calculations show that the number of simpleleaf tree species is bigger than the compoundleaf tree species.The rates between genera and species of the simpleleaf species are 66%and 78%respectively,and those of compoundleaf species are 20% and 16%.If the calculation is made according to the simpleleaf veined type,the rates of pinnate species are 71% and 77.5%,of palmate species are 24% and 16% and of paralled veined species are 5%and 6.5%.Some conclusive researches have been also made on the representative species of each type as well as the main lines of the classification of their genera and specices and finally ways and clues have been suggested to further researches of the tree’s vegetative organ classification with regard to their branching system,pith type,bud type,vascular type,nervation of the third and higher degree,silone and appendages.