Belay Bayissa, Regasa Tena, Mammo Siraj
Ambo University College of Agriculture and Veterinary Science, Ambo, Ethiopia.
Department of Biology, College of Natural and Computational Sciences, Wallaga University, Nekemte, Ethiopia.
BMC Ecol Evol. 2025 May 7;25(1):42. doi: 10.1186/s12862-025-02375-x.
The study was conducted to assess the woody plant species composition, population structure, and regeneration status of Ruruki Forest. A total of 30 sample plots, each 20 m × 20 m, were established using a systematic sampling method. A sub-plot of 5 m × 5 m was used to count saplings and seedlings. To describe the vegetation structure of the study forest we computed DBH and height size frequency distributions of individuals and species importance value indexes (IVI).A total of 70 woody species which categorized into 64 genera, and 45 families were identified of which 57.14% were trees, while shrubs and lianas cover37.14%and5.7%, respectively. The total density of woody species recorded was 868.33 individuals / ha. The highest IVI index was recorded for Syzygium guineense species, indicating the species is ecologically important. The results of height showed that there was a greater predominance of small-sized individuals of woody species than large-sized woody species for the study forest. The general pattern of the DBH class distribution of the forest showed an irregular distribution, which implies there was some selective cutting of individual woody species for different purposes. The overall regeneration status of the forest was found to be fair. Generally, the result obtained from this study shows that there is disturbances and selective cutting of trees in the forest. Hence, there is a need for full participation in sustainable forest management to control selective cutting and to apply the best forest management practices, such as reforestation and afforestation.
本研究旨在评估鲁鲁基森林的木本植物物种组成、种群结构和更新状况。采用系统抽样方法共设立了30个样地，每个样地为20米×20米。用一个5米×5米的子样地来统计幼树和幼苗数量。为描述研究森林的植被结构，我们计算了个体的胸径和高度大小频率分布以及物种重要值指数（IVI）。共鉴定出70种木本植物，分属64属45科，其中树木占57.14%，灌木和藤本植物分别占37.14%和5.7%。记录的木本植物总密度为868.33株/公顷。几内亚蒲桃的IVI指数最高，表明该物种具有重要生态意义。高度结果显示，研究森林中木本植物小个体的优势比大个体更明显。森林胸径级分布的总体模式呈不规则分布，这意味着存在出于不同目的对个别木本物种进行选择性采伐的情况。研究发现森林的整体更新状况尚可。总体而言，本研究结果表明森林中存在树木受干扰和选择性采伐的情况。因此，需要全面参与可持续森林管理，以控制选择性采伐并应用最佳森林管理实践，如重新造林和造林。
