贵阳市山地公园苔藓植物群落结构及其与环境关系研究
2021-12-06李宇其王秀荣
李宇其 王秀荣



摘要:苔藓植物是构成山地公园地被景观的重要组成部分,在地表修复和物种多样性等方面发挥着重要的生态作用。以贵阳市山地公园苔藓植物为对象,研究了物种分布組成和与环境的关系。结果表明:贵阳市山地公园苔藓物种丰富度较低,苔藓植物共有16科24属44种,其中藓纲植物14科22属41种,苔纲植物2科2属3种,优势种为齿边同叶藓Isopterygium serrulatum、疏网美喙藓Eurhynchium laxirete、悬垂青藓Brachythecium pendulum等9种。不同基质上苔藓植物的分布存在显著差异,其中土生苔藓群落最丰富,其次为石生苔藓群落,树生苔藓群落丰度最低;此外,基质及湿度是苔藓植物分布的关键影响因子。
关键词:苔藓植物多样性;生活型;山地公园;典范对应分析(CCA)
中图分类号:S688
文献标志码:A
文章编号:1671-2641(2021)05-0091-06
收稿日期:2021-03-23
修回日期:2021-04-20
Abstract: Bryophyte is an important part of ground cover landscape in mountain parks and plays an important ecological role in surface restoration and species diversity. This paper studies the species distribution composition and the relationship between bryophytes and the environment in the mountain parks of Guiyang City. The results show that the bryophyte species richness in Guiyang mountain parks is low. There are 44 species, 24 genera and 16 families of bryophytes, including 41 species, 22 genera and 14 families of Musci, and 41 species, 22 genera and 14 families of Hepaticae. There are 9 dominant species, such as Isopterygium serrulatum, Eurhynchium laxirete, Brachythecium pendulum. There are significant differences in the distribution of bryophytes on different substrates, the geophytia is the most abundant, followed by the petrophytia, and the epixylophytia is the lowest. In addition, matrix and humidity are the key factors affecting bryophyte distribution.
Key words: Diversity of bryophyte; Life-form; Mountain Park; Canonical Correspondence Analysis(CCA)
苔藓植物作为先锋植物遍布于各类生态位中[1],是具有独特观赏特征的景观植物。其在储水保湿[2]、检测环境[3]、防止水土流失、促进土壤结皮[4]等方面有突出的生态作用;在景观领域,作为造景材料运用于公园、广场、校园等景观空间,以及微景观布置[5]、盆景装饰、古典插花[6]等;部分种类还具药用价值[7]。目前针对贵州喀斯特地貌苔藓植物多样性的研究集中于石漠化区域[8]、森林公园[9]、天坑[10]、沟谷[11]、城区墙壁[12]等,但关于山地公园苔藓植物多样性及其与环境关系的研究存在缺失。
贵阳市是全国具有代表性的喀斯特山地城市,近年来一直坚持建设生态文明城市,为此提出建设“千园之城”的构想,建成或待建许多山地公园。……
