| 生物土壤与生态 |
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| Species Diversity and Distribution of Bryophytes in Songshushan Region of Horqin Sandy Land |
| TIAN Gui-quan1, WANG Zi-wen2 |
| 1.College of Life Science and Technology, Inner Mongolia Normal University, Hohhot 010022, China; 2.Songshushan Forestry Centre of Wengniute Banner, Wengniute Banner 024500, Inner Mongolia, China |
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Abstract Based on quadrat and community investigation in 2006 and 2008, 76 species (including subspecies and varieties) of bryophytes were discovered in Songshushan region in Horqin Sandy Land, which can be classified into 2 taxonomical groups, namely liverwort (9 species) and mosses (67 species). These species are attached to 21 families and 41 genera, and can be categorized into 7 flora types, the majority of which are attached to North Temperate flora (48 species), Cosmopolitan flora (12 species), and East Asia flora (8 species). Many bryophyte species are distributed in the microhabitat such as stone crack soil, rock surface and trunk, among which most bryophyte species adapt to two or more than two kinds of microhabitat, only few to one kind of microhabitat. Thirty-nine species of the epigaeous bryophytes are discovered in different vascular plant community, among which Bryum bicolor, Didymodon vinealis, Mannia triandra, M. sibirica and Brachythecium salebrosum keep their dominant position in bryophytes community. With the increase of the soil moisture content, the composition of dominant bryophytes species change correspondingly in the following order: Acrocarpi-muscorum→Acrocarpi-muscorum+Thallus Liverworts→Thallus Liverworts+Acrocarpi-muscorum→Pleurocarpi-muscorum+Thallus Liverworts+Acrocarpri-muscorum. The distribution pattern of epigaeous bryophytes community provide important information for understanding the formation and maintenance of bryophytes crusts at a large spatial scale.
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Received: 02 December 2010
Published: 20 September 2011
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2011, Vol. 31 
