Abstract
Assisted natural regeneration approach was experimented in the Sahel region in the aim of restoring land and vegetation in accordance with the global objectives of the Great Green Wall for the Sahara and the Sahel Initiative. Two sites (Endé and Soula Kanda) located in the district of Bankass in the centre of Mali were concerned by this study. Assisted shoots and non-assisted shoots of Guiera senegalensis J. F. Gmel. were compared at Soula Kanda, while at Endé, only assisted shoots were monitored so that to assess the impact of this approach on the survival and the growth of the shoots of this species. The height, the diameter at the basis and the diameter at 1.30 m above the ground were measured from 2015 to 2017 at Endé and from 2016 to 2017 at Soula Kanda in November/December each year. For each treatment, thirty shoots were monitored and data were analysed using the software SYSTAT9 FOR WINDOWS. At Endé, the survival rate was 93%. At Soula Kanda, the survival rate of assisted shoots was 97% against 73% for the control. At Endé as well as at Soula Kanda, dead shoots were cut by farmers. The current annual increments at Endé were 44 cm year−1 for height and 1.27 cm year−1 for the diameter at 1.30 m above the ground. At Soula Kanda, the current annual increment for height was the same for the two treatments (20 cm year−1).
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Acknowledgment
We are very grateful to Kew-Royal Botanic Gardens (UK) for financial support and to IER (Mali) for al1 logistics. Many thanks are due to our colleagues of Forestry Resources Program, to Bankass local Forestry service and Conseil de Cercle (particularly Kaleb Tessougué) in helping for field activities. Many thanks are also due to Bankass farmers for allowing us to carry out this study on their parcels and for participating in field activities.
Funding
This study was funded by Kew-Royal Botanic Gardens (UK) in the frame of the trans-border pilot project (Burkina-Mali-Niger), model Great Green Wall (GGW).
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Appendices
Appendix 1: Social, environmental and economic benefits of FMNR
Social benefits | Environmental benefits | Economic benefits |
---|---|---|
1. Fosters realization, acceptance and the resolve to Change | 12. Widespread adoption of FMNR restores tree cover | 19. Increases incomes through improved crop yields |
2. Creates an enabling environment | 13. Increases biodiversity | 20. Increases incomes through sale of tree products, including building timber, firewood, food, medicines, tool handles, furniture, etc. |
3. Builds collaboration, networks and partnerships | 14. Reduces erosion | 21. Increases incomes through improved livestock Production |
4. Fosters tree ownership and land tenure security for Farmers | 15. Enriches soils | 22. Reduces expenditures and increases consumables |
5. Increases education and training | 16. Increases water availability | 23. Increases household assets |
6. Increases empowerment for women | 17. Reduces wind speed and temperatures | 24. Offers new income opportunities via carbon credit revenues |
7. Creates community advocates | 18. Increases climate change adaptation and mitigation | |
8. Increases food security, health and resilience | ||
9. Improves the environmental comfort of rural communities | ||
10. Gives rise to hope and optimism which improves adaptive capacity | ||
11. Reduces conflict |
Appendix 2: Advantages, disadvantages and constraints of ANRA
Advantages | Disadvantages | Constraints |
---|---|---|
1. Species adapted to local conditions 2. Low costs 3. Fast and very accessible to all farmers 4. Better survival rate 5. Guarantee biodiversity, reducing the risks and the magnitude of parasite attacks 6. Produces a wide range of products | 1. Limited choice of species 2. Spatial distribution not ordered 3. Random (dependent on a source of regeneration) 4. Lack of knowledge of the sylviculture of local tree species 5. Psychological aspect: a tree is more appreciated and better maintained when planted 6. Products perceived as common resources | 1. Fraudulent exploitation 2. Cut of tree parts for livestock feeding 3. Lack of forest regulations taking into account the status of the tree regenerated in the fields |
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Kelly, B.A., Sanogo, S., Sidibé, S.I. et al. Restoring vegetation and degraded lands by using assisted natural regeneration approach (ANRA): case study at Bankass in the centre of Mali, West Africa. Environ Dev Sustain 23, 14123–14139 (2021). https://doi.org/10.1007/s10668-021-01223-4
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DOI: https://doi.org/10.1007/s10668-021-01223-4