in Africa has increased by 11 million people since 2021 and by more than 57 million people since the outbreak of the COVID-19 pandemic (FAO et al. 2023). • Climate extremes are the second leading cause of food insecurity in Africa, after armed conflict and before economic slowdowns and growing inequality (FAO et al. 2023). Figure 1: Food insecurity and its causes in Ethiopia and Niger • The food system - the entire range of actors, their interlinked value-adding activities, and the broader economic, societal, and physical environments in which they are embedded - is thus failing to provide food security. • To build and sustain resilient, viable, and inclusive food systems, African countries are looking to galvanize the necessary set of individual and collective actions, including policy alignment and increased investments.
and increase water stress. • A temperature increase of more than 2°C will result in yield reductions for staple crops across most of Africa, compared to 2005 yields (IPCC 2022). • A temperature increase of 4°C or more above late-20th-century levels is expected to reduce maize and wheat yields in countries across Africa south of the Sahara by up to 50 percent (Mbow et al. 2019). • Smallholder farming systems that continue to dominate the agriculture sector in many African countries have been recognized as highly vulnerable to climate change because farmers are heavily dependent on agriculture and livestock for their livelihoods (Mbow et al. 2019). • Actions to enhance the functioning of food systems will only be effective if they account for climate risk and integrate adaptation solutions. • In this chapter, we use several models and data sets from 6 countries to examine the food system-climate change nexus and build the evidence base for policymakers to mainstream climate risk and adaptation solutions in food system transformation efforts.
of climate change are likely to be substantial across African countries. • A sizable reduction in GDP by 2050 is expected in all four case study countries—Kenya, Mali, Nigeria, and Senegal—but is more pronounced for the former two, which have a larger agricultural sector. • The contraction of the economy has implications for employment, poverty, and consumption expenditures. For Nigeria, the reduction in consumption expenditure is more pronounced for rural households and those in the lowest income quintile. • Climate-smart agriculture production strategies—soil and water conservation measures and improved seed—could mitigate the economic shocks associated with climate change in the four case study countries. • The investments required are substantial, as, in the four case study countries, between 42 and 90 percent of arable land would need to be equipped with soil and water conservation measures and between 36 and 71 percent would need to be planted with improved seeds. • Findings from Ethiopia and Niger reveal that to ensure the sustained uptake of climate-smart strategies by farm households, there is a need to build their adaptive capacity, for example, through enhancing their asset base or enhancing human capital. • Also, additional interventions may be required to induce female-headed households to implement adaptive production strategies on their farms. These interventions may also have a direct effect on food security.
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