长白山种子植物区系研究

长白山种子植物区系是东北植物区系的一部分，它具有东北植物区种子植物的大部分种属，共有种子植物约１０９科４９６属１２７４种，是中国东北最丰富的高山型植物区系。此区系属于温带性质．特有现象明显，垂直替代与水平替代现象也均表现明显，地理联系广泛，但以与东亚其它地区特别是与日本的联系最为密切，种类成分复杂，共有１７个分布型与１７个分布亚型，其中包含有少量热带性质成分和一些寒带性质成分，而主要的则是以占半数以上的温带性质的东亚地区成分为主体，渗入了相当数量的北温带地区成分和若干其它温带成分所组成的。起源时间不晚于第三纪。

STUDIES ON THE FLORA OF SEED PLANTS FROM CHANGBAI MOUNTAIN

The flora of seed plants from Changbai Mountain is one part of northeastChina, and has its greater part of genus and species. It has about 109 families, 496genus and 1274 species, and it is the most aboundant alpine type flora in northeastChina. The flora is temperate in nature and remarkable in endemicity. It is obviousin horizontal and vertical vicariance, has the wide conection in geographical relationships. It is closely related with rest E. Asia (especially with Japan). The flora iscomplex in geographical elements of species, having 17 types and 17 subtypes. Theflora is composed of temperate elements, frigid and subfrigid elements. and tropicalelements. The principal part is the E. Asia region element which is more than halfin composion. North Temperate region elements and other temperate elements hasalso relative amounts. The flora origin is not after the Tertiary Period.