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Bulletin of Botanical Research ›› 2016, Vol. 36 ›› Issue (5): 712-720.doi: 10.7525/j.issn.1673-5102.2016.05.012

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Species Diversity of Ground Bryophyte Communities in Junger Loess Hill-Cully Region in Inner Mongolia

HONG Xia, TIAN Gui-Quan, WU Ri-Gumala   

  1. College of Life Science and Technology, Inner Mongolia Normal University, Hohhot 010022
  • Received:2016-04-25 Online:2016-09-15 Published:2016-09-27
  • Supported by:
    National Natural Science Foundation(30760042,31460109);Inner Mongolia National Science Foundation(2011MS0523)

Abstract: Based on the quadrat survey of ground bryophytes community under nine kinds of vegetation in Junger loess Hill-Cully, we studied the species diversity and its relationship with the environmental factors. (1)We found 8 families, 18 genera, and 35 species bryophytes, among which Pottiaceae and Bryaceae were dominant families, and Bryum argenteum, Didymodon vinealis, Brachythecium salebrosum, Bryum bicolour, Hypnum cupressiforme var. lacunosum, etc were dominant species; (2)Among the Alpha diversity index, Patrick index was 4-21 species, Shannon-Wiener index and Simpson diversity index were 1.078 0-2.153 3 and 0.588 9-0.826 3, respectively, and the order in natural vegetation was Juniperus rigida forest >Artemisia giraldii shrub >Prunu davidiana forest >Caragana intermedia shrub >Stipa bungeana steppe >Thymus serpyllum steppe. The three indexes of artificial forest of Populus simonii forest and Platycladus orientalis forest were close to those of the Caragana intermedia shrub, and Pinus tabulaeformis forest was close to those of the Juniperus rigida forest; (3)The main ecological factors affecting the diversity of bryophytes were soil water content, air humidity and light intensity; (4)Bata diversity index was 0.240 0-0.857 1, the species similarity between Stipa bungeana steppe and Artificial Populus simonii forest was the highest, and was the lowest between Juniperus rigida forest and Thymus serpyllum community. The bryophyte community in Juniperus rigida forest, the key area for bryophyte diversity conservation in Junger loess Hill-Cully, had the richest species diversity.

Key words: species diversity, ground bryophytes, Junger loess Hill-Cully, Inner Mongolia

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