【摘要】 采用样方法和样线法相结合的调查方式对大耗岛进行了植物调查,共记录维管植物种220种,隶属67科,178属,其中蕨类植物4种,裸子植物1种,被子植物215种.对大耗岛植物进行了科属组成、地理区系、G-F指数和Jaccard相似性指数分析,结果表明:1)在植物科属组成上,大耗岛的植物以单种科、单种属为主;2)大耗岛植物分布区类型具有典型的温带性质,并且分布区类型复杂多样; 3) G-F指数反映出大耗岛植物科、属水平上的多样性较为丰富; 4)将大耗岛植物物种与周边的矾坨子岛、蛋坨子岛和蛇岛的植物进行了相似性比较,大耗岛与其他3岛的植物相似性并不高,表明大耗岛植物种类具有一定的独特性.更多还原

【Abstract】 Plant investigation on Dahao Island was carried out,which combined quadrat method with line transect method.A total of 220 vascular plants belonging to 178 genera and 67 families were recorded.Of these,4 were Pteridophyta,1 was Gymnosperm and 215 were Angiosperm.Thought analysis of families and genera composition,floral region,G-F index and Jaccard index,the results showed that:1) in plant families and genera composition,the plants in Dahao Island mainly belong to single species families and single species genera;2) The flora is composed of in a large part of temperate elements and are complex and diverse;3) G-F index reflects the diversity of plant families and genera in Dahao Island is richer;4) The similarity of plant species was compared by Fantuozi Island,Dantuozi Island and Snake Island surrounding the Dahao Island.The plant of Dahao Island has a low similarity with the three islands,which shows the plant species in Dahao Island have certain uniqueness.更多还原