白云山国家森林公园植物群落特征及主要乔木空间分布格局

摘要

以白云山国家森林公园小黄山1 hm2的温带落叶阔叶林为研究对象,分析了群落的物种组成、胸径结构和主要物种的空间分布格局.结果表明,共调查到木本植物19科29属43种,共计1165株;物种的径级结构接近倒“J”形,小径级个体数量居多;锐齿槲栎(Quercus aliena var.acuteserrata)和落叶松(Larix gmelinii)在群落中占主要优势;稀有种和偶见种分别占总物种数的13.95％和46.51％;样地内优势物种主要表现为聚集分布格局;经过异质性泊松模型排除生境异质性的影响后,物种主要表现为随机分布.%The 1 hm2 temperate deciduous forest in Baiyun Mountain National Forest Park was taken as the research object to analyze the community species composition,the DBH structure,and the spatial distribution pattern of the main species.The results showed that:a total of 1 165 woody plants belonging to 43 species,29 genera,and 19 families;the size structure of species was in the shape of a reversed letter "J",and the majority of individuals belonged to the small-diameter class;Quercus (Quercus aliena var.acuteserrata.) and larch (Larix gmelinii) were the predominant species in the community;rare species and occasional species accounted for 13.95％ and 46.51％ of the total species,respectively;the predominant species in the plot mainly showed an aggregate distribution pattern;after excluding the influence of habitat heterogeneity with the heterogeneity poisson model,the species mainly showed as randomly distributed.