马鞍列岛之花鸟山岛苔藓植物区系成分研究

通过对采集的759份苔藓植物标本进行鉴定,首次报道了花鸟山岛苔藓植物种类组成,区系地理成分及特点.研究结果表明:1)花鸟山岛共有苔藓植物103种,其中苔类植物8种,隶属于4科5属,藓类植物95种,隶属于22科41属;2)花鸟山岛中丛藓科(Pottiaceae)为第一大科,有9属18种;真藓属(Bryum)为第一大属,有10种;3)花鸟山岛中苔藓植物区系成分是以东亚成分为主(占总种数的36.96%),温带成分次之(占总种数的35.87%),热带成分再次之(占总种数的20.65%);4)花鸟山岛苔藓植物生态分布类型复杂多样,以土生类型(占总标本数的61.92%)最多,石面薄土(占总标本数的12.87%)和砂土生(占总标本数的7.77%)、石土生(占总标本数的7.25%)、石生(占总标本数的7.11%)次之,树生(占总标本数的1.84%)和墙面薄土生(占总标本数的1.32%)再次之.

Studies on flora of bryophytes in Hua'niaoshan Island, Ma'an Archipelago

Based on identification of collections of 759 bryophyte samples,bryological composition and floristic characteristics in Huaniaoshan Island were analyzed. The results showed that:1) A total of 103 bryophyte species in Huaniaoshan Island were reported,including liverworts 8 species belonging to 4 families and 5 genera,and 95 species of mosses belonging to 22 families,41 genera. 2) Pottiaceae is the largest family with 9 genera and 18 species;Bryum is the largest genus containing 10 species in Hua''niaoshan Island;3) The floristic types of bryophytes in Huaniaoshan Island showed that East Asia element was dominant (accounted for 36.96% of the total species);Temperate element followed (accounted for 35.87% of the total species);Tropical element was the third one (accounted for 20.65% of the total species);4) The ecological distribution types of bryophytes were complicated in Huaniaoshan Island. The most common type was on soils (61.92% of the total samples),thin soil on rocks (12.87% of the total samples) was the second,soil on sands (7.77% of the total samples) was the third,and soil on rocks (7.25% of the total samples) was the fourth,on rocks (7.11% of the total of samples) was the fifth,on trees (1.84% of the total of samples) was the sixth,thin soils on wall (1.32% of the total samples) was the last.