广西江南油杉天然林种群分布特征

Distribution Characteristics of Keteleeria cyclolepispis Natural Forest Community in Guangxi

通过对江南油杉(Keteleeria cyclolepispis)天然林群落植物种类组成和垂直结构进行调查研究。结果表明:在18个江南油杉天然林样地中,群落植物种类组成共有34科50属56种,优势科为壳斗科(Fagaceae)、大戟科(Euphorbiaceae)、松科(Pinaceae)、山茶科(Theaceae)、樟科(Lauraceae)等。群落类型主要有江南油杉+乔木+灌木+草本和江南油杉+灌木+草本2个类型。云贵高原的南缘部分和都阳山山脉是广西江南油杉天然林最为集中的分布区。广西江南油杉天然林以散生或零星分布为主。

Study on the plant species composition of the natural forest community of Keteleeria cyclolepispis and the corresponding vertical structure was conducted. The results revealed that within the 18 sample plots selected, plant types of the natural forest community of Keteleeria cyclolepispis consisted of a total of 56 species, 50 genera, 34 families, in which the dominant plant families were Fagaceae, Euphorbiaceae, Pinaceae, Theaceae, Lauraceae etc. Two major communities of Keteleeria cyclolepispis with arbor, shrubs, herbs type and Keteleeria cyclolepispis with shrubs, herbs type were discovered. The south margin of Yungui Plateau and the Duyang mountain were found to be the most concentrated distribution zones for Keteleeria cyclolepispis in Guangxi. The sporadic and scattered distribution of Keteleeria cyclolepispis was discovered in Guangxi.