Resource Details

Effect of exotic tree plantations and site management on plant diversity

Literature: Books or Book Chapters Available at NO COST

Huttel, C. & Loumeto, J.L. 2001 "Effect of exotic tree plantations and site management on plant diversity" in Effect of Exotic Tree Plantations on Plant Diversity and Biological Soil Fertility in the Congo Savanna, eds. Bernhard-Reversat, F. Center for International Forestry Research, Bogor, Indonesia, pp. 14-23.

Contact Info



  • Le Caillou, Montignac, France


Species Info

  • Acacia auriculiformis
  • Eucalypt PF1( Hybrid)
  • Pinus caribaea (Exotic)


  • In this study species richness, species behavior and stand parameters were analyzed under fast growing exotic tree plantations and compared with the characteristics of nearby secondary forest patches in Pointe-Noire and Loudima of Congo. The plantations were established in a grass-dominated vegetation of native savanna.The planted species investigated were mainly eucalypt hybrid (PF1), and secondarily Acacia auriculiformis and Pinus caribaea.
  • The plots investigated were disturbed plots with similar age and history planted in 1983-1984 and logged in 1991, experimental unexploited plantations, selected commercial plots coppiced with trees from 5-6.5 years old. Heights and dbh of woody plants if relevant were measured, whereas the presence and cover percentages of herbaceous species, mainly Poaceae and Cyperaceae, were estimated. Planted tree characteristics, density, height and dbh, were also measured.
  • The results showed the exotic timber plantations facilitated an important floristic change from the grass-dominated vegetation of native savanna toward undergrowth characterized by important woody plants.
  • The total number of undergrowth species was relatively low under the exotic tree plantations compared to the secondary forests. In the individual plantations, the relatively high species richness in the undergrowth of eucalypt plantation at Loudima was attributed to the older age (26 years) and site conditions particularly soil. Forest proximity also increased the number of species, 50 species located in the closest (10m-50m) Eucalypt plots to only 32 in eucalyptus plots located far (100m) from the forest.

Geographical Region

  • Central Africa
  • Country

  • Congo (DRC)
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