河北省临城小天池森林区被子植物区系

河北省临城小天池森林区属华北植物分布区 ,有被子植物 88科、30 1属、5 5 5种 (包括1 4变种 )。含 1 0种以上的优势科有 1 4科、30 5种。表征科有 7科 ,中国特有属 5属 6种 ;河北特有植物 7种。该植物区系的组成和地理成分分析表明 ,被子植物主要以北温带成分为主 (共计有 98属、2 2 1种 ,占总属数的 37 6 9%、总种数的 4 6 92 % ) ;其次是旧大陆温带和泛热带成分。数据说明小天池被子植物区系具有明显的温带性质

A floristic study on angiosperm in Xiaotianchi forest region of Lincheng County

There are 555 species(including 14 varieties) of angiosperm belonging to 301 genera and 88 families in the Xiaotianchi forest region of Lincheng County ,Hebei Province.Among them,the number of dominant family consisting of more than 10 species is 14, with a total of 305 species.The number of typical family is 7.There are 5 genera of the Chinese endemic genus consisting of 6 species.There are Tendemic species of Hebei Province.The analysis of the compositions and the geographical element in the flora showed that north temperate element has made up the dominant type of the angiosperm and there is 221 species belonging to 98 genera,approximating to 37.69% of total genera in Xiaotianchi,and 46.92% of total species.Old wold temperate and Pantropic element are the second majority of the angiosperm.The data showed that the flora of Xiaotianchi has obvious temperate characteristics too.