摘要
河南省地处我国暖温带与亚热带过渡的重要地带 ,植物区系成分非常复杂。本文在最新植物区系资料的基础上 ,从种的层次上对河南省种子植物分布区类型进行了划分与分析。结果为 ,本省 2 95 3种野生种子植物归为 15个分布区类型和 2 4个亚型 ,其中中国特有分布有15 14种 (占 5 2 2 2 % ) ,分属 2 2个亚型。 2 95 3种种子植物在性质上属于热带亚热带分布的有910种 ,属于温带分布的有 94 9种 ,属于跨亚热带和温带分布的有 92 0种 ,其余少数为广布种 ,前三者大约各占近三分之一。这种比例关系充分显示了本省植物区系的南北过渡性。
Henan province locates in a transitional zone betweeen temperate to subtropic region from longitude 110°21′ to 116°39′ E and latitude 31°23′ to 36°22′ N.Its various physical enviroments and long geologic history made it abundant in species with complex floristic elements.The distribution pattern of the species in spermatophyte are studied in this paper.The result demonstrated that the 2953 species distributed in Henan can be divided into 15 areal types and 24 subtypes.Among them 1514 species are endemic to China and account for 52.22% of total species in the region and can be divided into 22 subtypes.Except cosmopolitan species,there are 910 species belonging to tropics-subtropics,949 species belonging to typical temperate zone and 920 species belonging to the distribution from temperate zone to subtropics; each about account for 1/3 of the total species in Henan province.So it shows that its floristic characteristics appears transitional from south to north in China.
出处
《云南植物研究》
CSCD
北大核心
2004年第2期148-156,共9页
Acta Botanica Yunnanica
关键词
河南
种子植物
植物区系
分布区类型
Distribution types
Spermatophyte
Flora
Henan province
