Species composition, stand structure, and regeneration status of tree species in dry Afromontane forests of Awi Zone, northwestern Ethiopia
作者机构：Center for Environmental Science in Addis Ababa UniversityAddis AbabaEthiopia Ethiopian Environment and Forestry Research InstituteAddis AbabaEthiopia Department of Crop ScienceBotswana University of Agriculture and Natural ResourcesGaboroneBotswana
出 版 物：《Ecosystem Health and Sustainability》 (生态系统健康与可持续性（英文）)
年 卷 期：2019年第5卷第1期
页 面：199-215,I0020页
核心收录：
学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学]
主 题：Basal area disturbances importance value index regeneration specie composition similarity topographic factors
摘 要：Species composition,structure,and regeneration status of trees were assessed in five dry Afromontane *** each of the forests,trees having≥5 cm diameter at breast height were identified and measured in 80 quadrats(20×20m^(2)).We compared tree species composition and similarities,stem densities,frequencies,basal area and importance value index of *** index was calculated to 13.3%in the least disturbed and 22.5%in highly disturbed forests.A total of 1,655 individuals representing 38 species and 28 families were *** tree densities varied from 364.1 to 664.1stem ha^(−1) with an average basal area of 20.7m^(2) ha^(−1).The analysis showed significant differences in basal areas of tree species between the least and highly disturbed *** densities ranged from 2000 to 8162.5 stem ha^(−1) and sapling densities ranged from 512.5 to 2562.5 stem ha^(−1).The anthropogenic disturbances revealed high degradation of population structure and regeneration statutes of the trees in the studied forest *** conclusion,the study provided empirical results on the dominance,population structure,importance value and regeneration status of tree species,which would be instrumental for the development of successful rehabilitation strategies for the studied forests.
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