Resource Details

Does forest restoration using taungya foster tree species diversity? The case of Afram Headwaters Forest Reserve in Ghana

Literature: Journal Articles

Boakye, E.A. Gils, v.H. & Osei, E.M. 2012, "Does forest restoration using taungya foster tree species diversity? The case of Afram Headwaters Forest Reserve in Ghana", African Journal of Ecology, vol. 50, nos. 3, pp. 319-325.

Contact Info

Emmanuel A. Boakye,


  • Kwame Nkrumah University of Science & Technology Working Group on Forest Certification, Kumasi, Ghana


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Species Info

  • Afzelia africana
  • Antiaris toxicaria 
  • Mansonia altissima
  • Nesogordonia papaverifera
  • Celtis mildbraedii
  • Sterculia rhinopetala
  • Funtumia elastic 
  • Blighia sapida
  • Cedrela odorata (Exotic)
  • Tectona grandis (Exotic)


  • This study evaluates taungya agroforestry system - a forest restoration effectiveness in promoting high tree diversity in Ghana. This study was conducted in a forest reserve buffered by Teak and Cedrella-taungya on logged, cropped and burned land. 
  • Native trees regeneration was assessed by species richness (SR), Shannon-Wiener Index (SWI), Shannon Evenness Index (SEI) and species density (SeD) for seedlings, saplings and trees separately and combined and subsequently correlated with canopy covers (CC) in taungya.
  • The results showed that the taungya tree seedling diversity was lower than the forest reserve but higher than reported for non-taungya exotic plantations. Additionally, the taungya seedling diversity was not significantly different from the forest, while sapling and tree diversity were lower. 
  • 27 different native tree seedlings dominated the taungya understory, with 26 common to both taungya and forest. Antiaris toxicaria was dominant in the taungya. A single native species Afzelia africana was unique to only the taungya and not found in the forest reserve. The native tree species in the taungya were mixtures of pioneers, non-pioneers light demanders, and shade-tolerant.
  • The authors recommend weeding, thinning, enrichment planting of tree species, controlled slash and burn as ways to maintain the diversity of trees in the taungya.

Geographical Region

  • West Africa
  • Country

  • Ghana
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