茅台上游河谷地区苔藓植物生态学研究

Studies on the Ecology of Bryophytes in Valley Area of Upper Reach in Maotai

摘要:

对贵州茅台镇茅台上游河谷地区的苔藓植物生态学进行了研究。结果表明,该地区有苔藓植物30 科53 属116 种;生态类型有石生、土生、沙生、树附生、腐木生和水生等6 种;PCA 排序分析表明,在大气候相同的环境下,苔藓植物生态分布格局差异大,主要受微环境的影响。淡色同叶藓、拟阔叶小石藓、毛口藓、齿边缩叶藓、褶叶青藓和拟脆枝曲柄藓为该地区的优势苔藓植物,其生物量为32.80~225.00 g m^-2,饱和吸水量为23519.90~269999.96 g m^-2。这说明,苔藓植物在该地区的生态修复过程中,以其特有的生态功能在水土保持和涵养水源、物质循环、土壤性质改善和更新等方面起到十分重要的作用。

Abstract:

The bryophytes community in valley area of upper reach in Maotai, Guizhou Province, China was studied. The results showed that there were 116 bryophytes taxa belonging to 53 genera and 30 families. The bryophytes could be divided into 6 types, such as petrophytia, terrestrial, psammophytic, epiphytic, saprophytic and aquatic. Principal components analysis (PCA) showed that distribution pattern of bryophytes had significant difference affected by microenvironment factors. Isopterygium albescens, Weissia platyphylloides, Trichostomum brachydontium, Ptychomitrium dentatum, Brachythecium salebrosum and Campylopus subfragilis are dominant bryophytes, and their biomass ranged from 32.80 to 225.00 g m^-2 with saturated water absorption from 23519.90 to 269999.96 g m^-2. It suggested that the bryophytes could play important roles in the process of soil and water conservation, material recycling, improvement and replace of soil in valley area of upper reach in Maotai.