山西太宽河自然保护区植物区系研究

Study on the Flora of Taikuanhe Nature Reserve in Shanxi

太宽河自然保护区位于山西中条山中段,经调查该保护区有维管植物119科464属887种。种子植物为112科455属870种,其中10属以上的科有10个,共215属411种;仅含1属的科有48科,其中1属1种的为29科。该区分布有较多的只含1种植物的属,有277属。科分布类型主要是世界广布(36.61%)、泛热带分布(29.48%)和北温带分布(21.43%)。属种分布类型中温带成分占优势,各类温带分布属高达262属,占该区总属数的57.58%;各类温带分布种(不包括中国特有种)有482个,占该区总种数的55.4%。植物区系特征表现为种类丰富、起源古老、温带特性和过渡性明显及分布有较多的珍稀濒危植物。

Taikuanhe Natural Reserve is located in the central of Zhongtiao Mountain, Shanxi. In the reserve, there are 887 vascular species belonging to 464 genera and 119 families. Seed plants are 870 species belonging to 455 genera and 112 families, of which 10 families have more than 10 genera each, and totally include 215 genera and 411 species; of the families, 48 families only have 1 genus each, and 29 families only have 1 genus and 1 species each. More 1-species genera （277） are distributed in the reserve. The family distribution types are mainly composed of the cosmopolitan （36.61%）, the pantropic （29.48%） and the north temperate （21.43%） types. The genus and species distribution types are dominated with temperate elements, of which the temperate genera are as many as 262 accounting for 57.58% of the total numbers of the reserve, and the temperate species （without the species endemic to China） are 482 accounting for 55.4% of the total. The flora shows the characteristics of rich species, ancient origin, outstanding traits of temperate and transition, and having rich rare and endangered plants.