Micro-zoning of the selected plot according to the soil type, the topography and the identification of adapted local plant and tree species

Community members and experts developed a topographic map of the selected plot showing the different soil types and adapted local plant and tree species. Two main soil types have been identified:

  • The soils of the mountainsides: stony surfaces; horizon 1 (0 to 20 cm) is silty sandy with a mixture of stony grains; horizon 2 (20 to 40 cm) is dominated by large stones and a small proportion of soil and horizon 3: (40 to more) was not accessible. For this soil type, the appropriate species are: Acacia (Acacia nilotica, Acacia Sieberiana, Acacia seyal), Neem Azadirachta indica, Anogeissus leiocarpus, Jujube (Ziziphus mauritiana), River Red Gum (Eucalyptus camaldulensis).
  • The site bed is dominated by vertisols (i.e. soils with a high content of expansive clay minerals) with local withdrawal slots: horizon 1 (0 to 40 cm) composed of silt and clay and horizon 2 (40 to more) a mixture of silt, clay and stony grains. Suitable species include: Khaya (Khaya senegalensis), Cassia (Cassia siamea), African black plum (Vitex doniana), River Red Gum (Eucalyptus camadulensis), Winter thorn (Faidherbia albida), Cashew (Anacardium occidentale) and other fruit trees.

 

Depending on these different soil types, a mini-zoning allowed to delimit 11 blocks occupied by eight selected species.

  • Full involvement of the designated local facilitators who are willing to follow-up on the activities on a daily basis
  • Participatory selection of the plant and tree species to guarantee a useful reforestation
  • Adoption of the micro-zoning approach

It is pivotal to take into account the physical characteristics of the plot for the success of the initiative including soil characteristics and topography by involving local experts. This allows to identify solutions for restoration that are sustainable and profitable in the short, medium and long term.