内蒙古古日格斯台自然保护区植物区系分析

对内蒙古锡林郭勒盟西乌旗东南部古日格斯台自然保护区植物的组成与植物区系地理成分分析结果表明:保护区内有维管植物101科349属726种38变种。其中,蕨类植物11科15属20种,裸子植物3科5属9种,被子植物87科329属697种38变种。区内被子植物的科、属、种数量居多,分别占保护区维管植物科、属、种数的86.1%,94.5%和96.3%。古日格斯台自然保护区植物区系属温带性质,成分比较丰富,以东亚成分、泛北极成分为主体,达乌里-蒙古成分、古北极成分、东古北极成分相对优势;区内地理成分较为复杂,包含了19种不同类型,地理联系广泛,特有程度不高。

Analysis on Floristic Composition and Flora in Gurigesitai Nature Reserve, Inner Mongolia, China

The floristic composition and flora based on the vegetation investigation and the correlational materials were studied.The results showed that there were 38 varieties and 726 species,349 genera,101 families of Vascular Plants in Gurigesitai Nature reserve which lies in southeast of Xiwuzhumuqi,Inner Mongolia.Among them,ferns were 20 species,15 genera,11 families,gymnosperms were 9 species,5 genera,3 families,while angiosperms were 38 varieties and 679 species,349 genera,87families,which respectively accounted for 96.3%,94.5%,and 86.1% of the Vascular Plants.Flora in this area had temperate property with abundant geographic elements.Most of them were East Asia,pan-arctic elements,next was Dahuria-mongolia,Palaerctic and East-Palaerctic elements.The floral geographical elements were diverse,including 19 different types,with abroad geographic relation.