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\newpage  \section{Conclusion}  In the light of expected future population growth and the growing scarcity of arable land due to climate change and variability, increasing pressure on African food systems is to be expected and the herewith the necessity to provide more food on less land. For most of the countries in sub-Saharan Africa this implies a huge task. This paper introduced agroforestry as a promising adaptation strategy for subsistence farmers. By various cost-effective methods of planting trees, smallholder farmers can increase the resilience of their food crops, whilst simultaneously generate additional income from the sale of firewood and other products and contribute to CO\textsubscript{2} emission mitigation through carbon sequestration. However, despite this synergy between increasing food security and climate change mitigation, the adoption rate of agroforestry in sub-Saharan Africa is still unsatisfactory.