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濒危植物秦岭冷杉群落数量特征及其动态 被引量:10

Community quantitative characteristics and dynamics of endangered plant species Abies chensiensis
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摘要 对石人山自然保护区秦岭冷杉群落特征和动态进行了研究,结果表明:秦岭冷杉群落共有种子植物61种,分属27科40属,群落垂直结构简单,可分为乔木层、灌木层和草本层。秦岭冷杉和华山松种群大、中胸径的个体占绝对优势,幼苗、幼树较少,属于衰退种群;湖北花楸小、中胸径的个体占优势,属于进展种群。通过聚类分析,将秦岭冷杉群落分为5个群丛类型:①秦岭冷杉+湖北花楸-山刺玫-结缕草群丛;②秦岭冷杉+华山松-秀雅杜鹃-藜芦群丛;③秦岭冷杉+血皮槭-黄刺玫-野菊群丛;④秦岭冷杉+华山松-箭竹-牛蒡群丛;⑤秦岭冷杉+锐齿栎-箭竹-水芹群丛。5个群丛类型均处于动态变化中,种群恢复应实行就地保护,减少人为干扰,促进天然更新。 The community characteristics and dynamics of Abies chensiensis forest distributed on Shiren Mountain Nature Reserve were investigated. The results showed that the community was composed of 61 seed plants belonging to 27 families and 40 genera. The vertical structure of the community was simple which could be divided into tree layer, shrub layer and herb layer. The large and middle DBH class individuals of A. chensiensis and Pinus armandii were dominant. While seedlings and sapling classes were less which belong to declining population. The small DBH class and young trees of Sorbus hupehensis population were dominant which belong to pro- gressing population. The results of quantitative classification showed that the community could be divided into 5 types: ①Ass. Abies chensiensis + Sorbus hupehensis-Rosa davidii-Zoysia japonica, ②Ass. Abies chensiensis + Pinus armandi-Rhododendron concinuum-Veratrum nigrum, ③Ass. Abies chensiensis + Acer griseum -Rosa xanthina -Dendranthema indicum, ④Ass. Abies chensiensis + Pinus armandi - Fargesia nitida - Arctium lappa, ⑤Ass. Abies chensiensis + Quercus acutidentata -Fargesia nitida- Oenanthe javanica. These five types are all in for the process of succession. It should be carried out the strategy for in situ conservation and reduced human inter- ferences in the forest rehabilitation in order to accelerate the natural regeneration.
出处 《生态学杂志》 CAS CSCD 北大核心 2007年第12期1942-1946,共5页 Chinese Journal of Ecology
基金 河南省林业厅重点攻关资助项目(20050107)
关键词 石人山自然保护区 秦岭冷杉 群落特征 聚类分析 动态 Shiren Mountain Nature Reserve Abies chensiensis community characteristics clustering analysis dynamics.
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