江油观雾山省级自然保护区种子植物区系研究

Pesearch on Seed Plant Floras in Guanwu Mountain Provincial Nature Reserve in Jiangyou

四川观雾山省级自然保护区位于四川省绵阳市江油市境内。通过野外调查和查阅标本、文献资料,对保护区内种子植物区系进行了研究。结果显示:四川省江油市观雾山省级自然保护区有种子植物128科519属1 009种,其中裸子植物6科12属19种;被子植物122科507属990种。有39科种子植物属于泛热带分布类型,占总科数的44.33%;141属为北温带分布类型,占总属数的29.81%。保护区种子植物区系表现出较典型的从热带向北温带过渡的类型。

Guanwu Mountain Provincial Nature Reserve is located in Jiangyou（ county-level city）,Sichuan Province. On the basis of field investigations and specimens reference,seudies were made of the seed plant floraes. The results have shown that there are 1 009 species,519 genera and 128 families of seed plants,among them there are 19 species,12 genera and 6 families belonging to gymnosperms; and990 species,507 genera and 122 families belonging to angiosperms. There are 39 families belonging to the pantropic category,making up 44. 33%,while there are 141 genera belonging to the north temperate categpru,making up 29. 81%. The flora of Guanwu Mountain Provincial Nature Reserve is characterized by the transition category from tropical to north temperate zones.