首页    期刊浏览 2024年12月13日 星期五
登录注册

文章基本信息

  • 标题:Structure, Species Composition and Status of Naturally Regenerated Woody Species in Eucalyptus globulus Labill. (Myrtaceae) Plantation at Entoto Mountain, Ethiopia
  • 本地全文:下载
  • 作者:Fekadu Debushe Teshome Soromessa ; Mekuria Argaw
  • 期刊名称:Journal of Environment and Earth Science
  • 印刷版ISSN:2225-0948
  • 电子版ISSN:2225-0948
  • 出版年度:2015
  • 卷号:5
  • 期号:15
  • 页码:41-52
  • 语种:English
  • 出版社:The International Institute for Science, Technology and Education (IISTE)
  • 摘要:This study was carried out at Entoto Mountain Eucalyptus plantation; about 10 km north of the center of Addis Ababa, to assess the composition, structure and the status of naturally regenerated woody species in Eucalyptus globulus Labill. plantation. Sixty plots of 400 m 2 (20 m X 20 m) size were established along a transect lines at every 300 m distance between them. Transects were laid in north–south directions at 500 m distance from each other. Seedlings were colleted from five sub-plots (4 m 2 ) within each major plot. A total of 41 naturally regenerated woody species (NRWS) were recorded in Entoto E. globulus plantation. They represented 33 genera and 25 families. Density of NRWS greater than 2.5 cm DBH was 932.1ha -1 . With increase in diameter class, the number of NRWS decreased in the E. globulus plantation. About 87% of the individuals had DBH of first DBH class (2.6-7.5 cm). Density ratio of individuals >10 cm DBH to that of individuals >20 cm DBH showed the predominance of small-sized individuals; this is the result of the recent regeneration. The ratio of stems per species is very high in the lower storey (63.9) also showed the predominance of shorter high individuals. J. procera (98.3%) was the most frequent NRWS and had an overriding dominance in terms of basal area (95.16%) and IVI values (81.8%). This result may indicate that J. procera is eco-friendly and competent with E. globulus. Therefore, E. globulus may not have a negative effect on J. procera . Thus, in degraded high rainfall areas, E. globulus plantations may play a role in fostering the regeneration of woody species such as J. procera. Species were prioritized for conservation using important value index, population structure and regeneration status as criteria.
  • 关键词:Entoto; Eucalyptus globulus ; naturally regenerated woody species; Plantation
国家哲学社会科学文献中心版权所有