海南浆纸林林下维管植物区系研究

Study on the vascular plants flora under pulp-paper forest in Hainan

根据实地调查与标本采集,现记录到海南浆纸林基地林下维管植物538种及种下单位,隶属于122科359属,其中蕨类植物26科44属85种1亚种,裸子植物2科2属2种,被子植物94科313属439种,9变种,2亚种,1栽培变种。该区系大型科少,没有大型属,主要为含1个种的小型属,区系优势科分别为大戟科、蝶形花科、茜草科、禾本科、锦葵科和菊科。种子植物区系成分较为复杂,主要表现在科地理成分的广泛性和属的地理成分的多样性。在科的分布区类型中,热带、亚热带的地理分布成分占优势;属的地理成分可划分为12个分布型和4个变型,其中以泛热带分布为主,占区系总数的42%。

The floristic compositions,characteristics,rare and endangered plants in the pulp-paper Forest in Hainan were studied on the basis of field investigation,literatures checked and specimens collected.The main results are as follows.There are 538 vascular plant species,belonging to 359 genera in 122 families,recorded in pulp-paper forest in Hainan.Among them,85 species and 4 varieties of pteridophytes,2 species of gymnosperms,439 species of angiosperms belong to 44 genera in 26 families,2 genera in 2 families and 313 genera in 94 families,respectively.The tropical and subtropical distribution elements,especially these tropical Asia ones,are dominant in pulp-paper forest in Hainan.The tropical and subtropical distribution general of seed plants cover 42% of the total seed plants.However,there are still a few temperate distribution elements.