The Biodiversity Of Bryophytes In Typical Mountainous Areas Of Grassland Desert In Inner Mongolia

Table Mountain is the edge of Helan Mountain.It is a central area about biodiversity.It is located in Wuhai City and belongs to the West Ordos Nature Reserve.It connects the Yinshan Mountains with the Helan Mountains.Langshan is the westernmost section of the Yinshan Mountains.Both Table Mountain and Langshan Mountain are mountainous areas in Western Inner Mongolia.Both mountainous areas are typical grassland desert areas.Few people have studied the moss in the two mountains.By studying the species diversity,floristic geographic composition and anatomical structure of bryophytes in Table Mountain and Langshan Mountain,we can know the following points:(1)There are 60 species(including varieties and subspecies)belonging to 25 genera and 25 genera in 10 families in Table Mountain(including Gander Mountain).Among them,2 families,2 genera and 3 bryophytes belong to 3 genera,8 families,23 genera and 57 species.There are 3 dominant families,including 18 genera and 46 species,which account for 76.66% of the total bryophytes species in Table Mountain.The bryophytes belong to absolute dominant families,accounting for the total bryophytes.53.33%.There are two dominant genera,i.e.Opposite Dental Moss and Eucommia,which account for 35% of the total bryophyte species in Table Mountain.There are only four families with one species,14 genera with only one species,and more single families and single genera.(2)There are 38 species(including varieties and subspecies)of 23 genera and 23 genera in 11 families in Langshan Mountain.Among them,2 families,3 genera and 3 bryophytes,9 families,20 genera and 35 species of bryophytes,and 2 dominant families,respectively,consist of 23 species in 10 genera,accounting for 60.53% of the total bryophytes species in Langshan Mountain.The dominant genera are only one,accounting for 50% of the total bryophytes species in Langshan Mountain.There are 4 families with only one species,15 genera with only one species,and more single families and single genera.(3)There are 29 species of bryophytes in Table Mountain and Langshan Mountain,and their floristic and geographical components are very similar.There are 27 species and 15 species of bryophytes in North Temperate Zone in Table Mountain and Langshan Mountain,accounting for 72.97% and 71.43% of the total number of bryophytes in each mountain,respectively.(4)This paper compares seven mountainous areas: Daqingshan Mountain,Langshan Mountain,Yabulai Mountain,Longshou Mountain,Helan Mountain,Wula Mountain and Daqingshan Mountain,and draws the following conclusions: Daqingshan Mountain,Helan Mountain,Wula Mountain,Longshou Mountain,Tabletop Mountain,Langshan Mountain,Yabulai Mountain,Tabletop Mountain,Yabulai Mountain,Tabletop Mountain,Langshan Mountain,Yabulai Mountain,Tabletop Mountain,and Yabulai Mountain.Mount > Langshan,the largest family of bryophytes and the least species are found in Mount Langshan.The mountain species richness of Daqingshan,Wulashan and Langshan mountain ranges decreases step by step.Bryophyta and Bryophyta are the dominant families in seven mountainous areas,and Bryophyta is the absolute dominant family in the mountainous areas of Western Inner Mongolia,such as Table Mountain,Langshan,Helan Mountain,Wula Mountain,Yabulai Mountain and Longshou Mountain.The similarity coefficients of species between Wula Mountain and Daqingshan Mountain are the highest,65.82%,59.18%,46.67%,50% and 50% respectively.The similarity coefficients of species between Wula Mountain and Daqingshan Mountain are the highest,the similarity coefficients of species between Wula Mountain and Daqingshan Mountain are 65.82%,the similarity coefficients of species between Table Mountain and Longshou Mountain are 59.18%,46.67%,50% and 50% respectively.The similarity coefficients of species among Table Mountain,Langshan Mountain and Longshou Mountain are the highest,and The composition is the highest,with a certain East Asian color.(5)Crossidium aberrans Holz.et Bartr.,a newly recorded species in Inner Mongolia,and Didymodon Australasiae from Australia were found and detailed anatomical maps were made.(6)Some bryophytes in Langshan and Table Mountains were dissected and photographed.It was found that xerophytic mosses had their own unique adaptive structure to cope with the drought environment,and illustrated with drawings.