A Preliminary Study of Mosses Diversity and Life-Form Composition in Motuo of Xizang,China
Motuo is rich in plant species due to its special biogeographically location and huge elevation difference.Its unique physical geography and unique climate conditions breed a variety of habitats for bryophyte distribution and form different bryophyte communities.To study the diversity and life forms of bryophytes in the area,the field survey of mosses in Motuo was carried out by means of line collection and general collection.The results showed that there were 420 species(including varieties and subspecies)of mosses belonging to 175 genera and 42 families in Motuo.There were 12 dominant families and 15 dominant genera of mosses in this area.The species diversity of moss plants was closely related to the special habitat in this area.There were 7 life forms of mosses in this area,among which 235 species of mosses were found in the soil and rock-community,accounting for 55.9% of the total.There were 196 species of mosses in the rock-community,accounting for 46.7% of the total.There were 112 species of mosses in the soil-community,accounting for 26.7% of the total.There were 68 species of mosses in the tree-community,accounting for 16.2% of the total.The life types of mosses in this region were different.In terms of life types of mosses in the soil and rock-community,Mat type was the most,followed by turf type,and fan type was the least.In both of rock and soil communities,weft was dominant,followed by turf,and cushion was the least.In terms of the life types of the epiphytic mosses in the tree community,the pendant type was dominant,followed by the turf type,and the fan type was the least.Overall,the life form of mosses was mat in Motuo,which indicated that the area had a good moisture condition and a moist environment.
万方数据
维普
