Resource Details

A comparative assessment on regeneration status of indigenous woody plants in Eucalyptus grandis plantation and adjacent natural forest

Literature: Journal Articles

Alem, S. & Woldermariam, T. 2009, "A comparative assessment on regeneration status of indigenous woody plants in Eucalyptus grandis plantation and adjacent natural forest", Journal of Forestry Research, vol. 20, nos. 1, pp. 31-36.

Contact Info

Shiferaw Alem,


  • Ethiopian Institute of Agricultural Research, Forestry Research Center, Addis Ababa, Ethiopia


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Species Info

  • Albizia gummifera
  • Coffea arabica
  • Clausena anisata
  • Diospyros abyssinica
  • Galiniera saxfraga
  • Maytenus gracilipes
  • Millettia ferruginia
  • Paveta abyssinica
  • Vernonia thomsoniana
  • Eucalyptus grandis (Exotic)


  • This study investigates and compares diversity, density and species composition of naturally regenerated woody plants under Eucalyptus grandis plantation and the adjacent natural forest in southwestern Ethiopia.
  • Vegetation data was collected from 40 sample plots, 20 in natural forest and 20 in plantations. Within the plots plant species were identified, DBH of all trees measured using a caliper; total heights of larger trees were measured using hypsometer. 
  • The results of the species diversity index and species distribution indicate that the adjacent natural forest had a higher species index than the E. grandis plantation. However, the number of species recorded in the plantation was much higher than that recorded in other exotic plantation stands elsewhere in Ethiopia. This is attributed to the species pool available in the surrounding natural forest, local climatic conditions and effects of plantations on other tree species. 
  • In both natural and plantation forests the tree species in lower diameter classes were dominant. The trees in the higher diameter classes were lower in the E. grandis plantation because the plantation was older, 31 years old. Some species with good size class distributions in the natural forests were not found in the plantations suggesting that E. grandis does not favor some species growth in the understory.
  • There was a high similarity of woody species composition between the natural forest and E. grandis planation, for most of the plots.
  • The importance value index result indicated that the E. grandis plantation overstory fosters the distribution of Albizia gummifera, Albizia abyssinicus, Cassipourea malosana, Calpurnia aurea, Jasminum abyssinicum, Millettia ferruginea, Olea capensis and Vernonia thomosoniana.

Geographical Region

  • East Africa
  • Country

  • Ethiopia
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