Abstract:
Bryoflores, collected from 6 habitats in dolomite type of Muyouchang Mercury Mine in Guizhou, China is analyzed in the paper. The results prove that (1) the bryophytes in dolomite type of Muyouchang Mercury Mine consists of 85 species, 37 genera, 12 families and the dominate families include Pottiaceae, Bryaceae and Brachytheciaceae. The bryophytes which belong to the three families are fit to g row in dolomite type of Muyouchang Mercury Mine; (2) Pottiaceae, Bryaceae and Br achytheciaceae distribute 4 common habitates which are mullock, waste residue, mine hole and stream. Furthermore, Pottiaceae and Bryaceae grow on waste furnace while Bryaceae and Brachytheciaceae belong to epiphyte; (3) the species similarity coefficients of waste furnace and waste residue, waste residue and stream, waste furnace and stream, waste residue and mine hole, mine hole and stream, waste furnace and mine hole on which bryophytes grow are 0.49, 0.46, 0.45, 0.41, 0.35 and 0.31 respectively which shows that the relationships are proximity. The species similarity coefficients between the bryophytes in mine hole and epiphytic b ryophytes and between epiphytic bryophytes and the bryophytes in stream are 0, which shows that the relationships are not exist; (4) the phytogeographical elements of the bryoflora include North Temperate(27.06%), Endemic to China(24.71%), E astern Asia(17.65%), Tropical Asia(14.12%), Cosmopolitan(7.06%), Pantropical(3.53%), Old World Temperature(2.35%), Tropical Asia and Tropical Australia(1.18%), Tropical Asia and Tropical Africa(1.18%) and Temperate Asia(1.18%); (5) the life forms are short turfs(71.76%), wefts(21.18%), tall turfs(2.35%) and mats(2.35%) as well as annuals(2.35%).
