西藏墨脱苔藓植物多样性初步研究OA

Medog is rich in plant species due to its special geographical location and huge elevation difference.Its unique physical geography and climatic conditions give birth to a variety of habitats for the distribution of bryophytes and form a diverse bryophyte community.In order to study the bryophyte diversity and its life-form composition in Medog of Xizang,line collection methods was used to investigate and collect bryophyte specimens,species identification and correlation analysis.The results showed that:(1)the present checklist includes 631 species belonging to 239 genera in 83 families,with 2 hornwort species in 2 genera and 2 families,217 liverwort species in 68 genera and 38 families,and 412 moss species in 169 genera and 43 families.There are 19 dominant families,26 dominant genus and 19 dominant species of bryophytes in this area.(2)There are 327 species belonging to Soil and Rock-community,accounting for 51.83%of the total bryophytes species in Medog;There are 216 species belonging to Rock-community,accounting for 34.23%of the total bryophytes species in the area;there are 173 species in Soil-community,accounting for 27.42%of the total bryophytes species.There are 97 species in Tree-community,accounting for 15.37%of the total bryophytes species in this area,and 21 species in Leaf epiphyte-community,accounting for 3.32%of the total bryophytes species in this area.Overall,because of its good natural environment conditions,Medog provides good conditions for the survival of rich bryophytes.