The vegetation composition, structure and regeneration status of Gole Natural Forest, West Arsi Zone, Oromia Regional State, Ethiopia

This study was conducted in Gole natural forest (Dodola) West Arsi Zone of Oromia Regional State, Ethiopia. The study was intended to investigate the vegetation composition, structure, community types and the regeneration status. To collect the vegetation data, systematically 62 plots 20 m × 20 m (400 m2) were established at 100 m interval, starting from the top of the mountain. Tree and shrub species were counted and their cover abundance value was estimated. The data for herbaceous species were collected from five 2 m × 2 m sub-plots laid at the four corners each and one at the centre of the main plot. Height and diameter at breast height (DBH) of all woody species taller than 1.5 m and thicker than 2 cm were measured. R package was applied for cluster analysis. Indicator species analysis was performed in R Interpolated species accumulation curves. Estimate S 8.2 Software and Microsoft Excel were used to analyze the data. Rarefaction was applied to compare the species richness of the ...

本研究于埃塞俄比亚奥罗米亚州西阿尔西地区的戈莱天然林（多多拉）开展，旨在调查该区域的植被组成、群落结构、群落类型及其更新状况。为采集植被数据，以100米为间隔，从山顶起始系统布设了62个20 m × 20 m（400 ㎡）的样地。对乔木与灌木物种进行计数，并估算其盖度值；草本物种的数据则取自主样地四角及中心设置的5个2 m × 2 m小样方。针对所有株高超过1.5 m、胸径（diameter at breast height, DBH）大于2 cm的木本物种，测量其树高与胸径。本研究采用R软件包完成聚类分析，在R环境中开展指示物种分析并生成插值物种累积曲线；使用Estimate S 8.2软件与Microsoft Excel进行数据统计分析。采用稀化分析（rarefaction）比较……的物种丰富度。