湖南浏阳桂花峡桂花次生林的物种数量特征

<正>通过对湖南浏阳周洛村桂花峡的调查,统计了桂花群落的物种组成成分,分析了群落的相对密度、相对频度、相对盖度和重要值。结果表明桂花为相对聚集成丛分布,对严酷生境适应能力较强,在石灰岩山地贫瘠土壤条件下为绝对优势树种,在生境略好的条件下形成桂花-青冈栎群落,林下有少量幼苗天然更新,其他物种成分较为简单,该桂花群落可初步认定为野生群落。

Quantitative Characteristics of Species in Wild Community of Osmanthus fragrans in Guihuaxia,Liuyang,Hunan

Species composition, relative density, relative frequency, relative cover and important value were studied on wild community of Osmanthus fragrans in Guihuaxia, Zhouluo village, Liuyang city, Hunan province. The result showed that distribution of Osmanthus fragrans relatively thicken and became the dominant species in this kind community. In the better environment, Osmanthus fragrans with Cyclobalanopsis glauca were the dominant species. There were a few infancies in the forest, and other species were simple. The Osmanthus fragrans community could be considered as a wild community.