浙南次生阔叶林群落结构特征研究

Study on Structure Characteristics of Secondary Broad-leaved Forest Community in the Southern Zhejiang

浙南次生阔叶树种资源丰富,常见的自然恢复乔木阔叶树种达60余个,频度大于10%的有青冈、木荷、苦槠、白栎、甜槠、枫香、红楠、野漆、栲树、樟、冬青、檫木、野柿和杨梅14个;但树种总量较为集中,其中青冈、木荷、苦槠和白栎4个树种的立木总量占全部阔叶树种的65.14%。天然恢复条件下林分一般由1～5个乔木树种组成,其中乔木树种4个以下的占48.3%,乔木阔叶树种4个以下的占乔木树种4个以下的57.4%,只有10%的样地乔木树种数量超过10个;单位面积的乔木树种在3000株/hm2以下的占89.9%,不足2000株的占78.7%,1000株以下的占32.6%。根据各样地乔木层主要树种的重要值,浙南次生常绿阔叶林中青冈、苦槠、木荷、甜槠、枫香、石栎、米槠等种群为群落的优势种群。

The study demonstrated abundant tree species resources for secondary broad-leaved forest in the southern Zhejiang province. There are more than 60 common species of natural regeneration, among them the frequency of 14 species was more than 10 percent, such as Cyclobalanopsis glauca, Schima superba, Castanopsis sclerophylla. But standing trees of C. glauca, S. superba, C. sclerophylla, Quercus fabri accounted for 65.14% of the forest. Natural generated forests were normally composed by 1-5 arbor trees. Less than 3 000 trees per unit area occupied 89.9% of the sample plots, less than 2 000 trees/ha accounted for 78.8%, and less than 1 000 trees/ha was 32.6%. According to importance value of major tree species in arbor layer of the sample plots, dominant populations in the secondary broad-leaved forest in the southern Zhejiang province were C. glauca, S. superba, C. sclerophylla, etc.