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Bulletin of Botanical Research ›› 2017, Vol. 37 ›› Issue (5): 664-672.doi: 10.7525/j.issn.1673-5102.2017.05.005

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Species Diversity of Ground Bryophyte Communities in Different Vegetation in Daqinggou National Nature Reserve

HAN Shu-Ting, TIAN Gui-Quan, HAN Shu-Mei   

  1. College of Life Science and Technology, Inner Mongolia Normal University, Hohhot 010022
  • Received:2017-03-14 Online:2017-09-15 Published:2017-09-15
  • Supported by:
    National Natural Science Foundation(31460109,30760042);Inner Mongolia normal university graduate students' research & Innovation fund)(CXJJS16105)

Abstract: Based on quadrat survey ground bryophytes community under five kinds of vegetations in Daqinggou National Nature Reserve, we studied the species diversity and its relationship with environmental factors. (1)The 55 species bryophytes belonging to 12 families and 27 genera were found, among which Pottiaceae, Brachytheciaceae and Bryaceae were the dominant families, Brachythecium, Bryum and Weissia etc. were dominant genera, and Bryum bicolor, Mannia sibirica, Entodon compressus var. zikaiwiensis and Brachythecium velutinum were dominant species; (2)Among Alpha diversity indexes, Patrick richness index varied from 6-29, Shannon-Wiener index from 1.439 2-2.608 0, and the order in natural vegetation was:Fraxinus mandschuria forest > Quercus mongolica forest > Ulmus macrocarpa forest > Armeniaca sibirica shrub > Leymus chinensis community. Simpson dominance index varied from 0.131 6-0.295 5, and had significant negative correlation with Patrick richness index and Shannon-Wiener diversity index. Pielou evenness index ranged from 0.663 0-0.803 3, and had not significant correlation with the other Alpha diversity indexes; (3)The main environmental factors affecting the diversity of bryophytes were air humidity, soil water content, canopy coverage and shrub coverage; (4)Bata diversity index varied from 0-0.652 2, with the highest species similarity between Ulmus macrocapa forest and Quercus mongolica forest, and the lowest between Leymus chinensis community and Fraxinus mandschuria forest.Fraxinus mandschuria forest and Quercus mongolica forest were the key area for diversity conservation of bryophyte in Daqinggou National Nature Reserve.

Key words: species diversity, ground bryophytes, environmental factors, different vegetations, Daqinggou National Nature Reserve

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