雅安周公山森林公园种子植物及其区系特征

雅安周公山省级森林公园种子植物较为丰富,有85科271种,其中裸子植物4科8种,被子植物81科263种,双子叶植物70科207种,单子叶植物11科56种。种子植物科的区系成分共有10个类型5个变型,地理联系广泛,但其地理区系优势分布不明显,热带性地理成分稍强,占总科数的45.90%。古老成分较多,单型科和少型科占绝对优势,占总科数的87.05%。有国家一级保护植物2种、二级保护植物3种、三级保护植物1种。

Floristic Analysis of Seed Plants in Zhougong Mountain Forest Park

The components of seed plants in Zhougong Mountain Forest Park are abundant and complex.There are 271 species of seed plants,belonging to 85 families,among which gymnosperms have 4 families,8 species,angiosperms have 81 families,263 species,dicotyledons have 70 families,207 species,and monocotyledons have 11 families,56 species.The floristic elements of families are composed of 10 types and 5 variation types.The dominant families are not plentiful.But the tropical distribution types have 39 families,accounting for 45.90% of the total family number in this area,and hold a little more dominant position.The origin of its flora is ancient.The monotypic and oligotypic families possess the absolute superiority with 74 families,making up 87.05% of the total family number in this region.Moreover,there are 6 rare endangered plants in the reserve,among which 2 species belong to national protection categories 1（NPC1）,3 species belong to NPC 2,and 1 species belongs to NPC 3.