review · Foods
Africa faces mounting food security pressures driven by population expansion, climate change, water scarcity, land degradation, and socioeconomic disparities. Rising temperatures, shifting rainfall, and extreme weather events such as droughts and floods threaten agricultural yields and rural livelihoods. Modelling population projections across five African sub-regions indicates that regional food requirements to sustain an intake of 2100 kilocalories per adult daily will increase from 438.3 million tonnes annually in 2020 to 558.7 million tonnes by 2050. Concurrently, regional warming is progressing at around 0.3 degrees Celsius per decade, with an anticipated five per cent decline in crop yields for each degree of warming above baseline levels. Existing agricultural systems remain vulnerable due to over-reliance on rain-fed farming, limited infrastructure, and insufficient technology. Mitigating these deficits requires comprehensive policy reforms, technological upgrades, land degradation interventions, and community-centred methods to boost crop production.
Rapid population growth and warming climates place severe strain on food supplies across Africa. Understanding projected crop losses and soaring dietary demands provides baseline evidence for international bodies, national governments, and regional planners. Addressing these impending deficits is vital to prevent worsening malnutrition, protect rural livelihoods, and guide systemic investments in agricultural infrastructure and climate adaptation across the continent.
The abstract does not evaluate specific commercial products or technologies, representing early-stage macro-level projections and policy analysis. However, it indicates clear application pathways for agritech developers, infrastructure providers, and seed innovators. Meeting the projected yield gaps and climate challenges will require proven yield-enhancing inputs, soil restoration solutions, and irrigation technologies that reduce reliance on rain-fed farming, though these applications remain at a conceptual distance from direct market deployment within the study itself.
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Africa is grappling with severe food security challenges driven by population growth, climate change, land degradation, water scarcity, and socio-economic factors such as poverty and inequality. Climate variability and extreme weather events, including droughts, floods, and heatwaves, are intensifying food insecurity by reducing agricultural productivity, water availability, and livelihoods. This study examines the projected threats to food security in Africa, focusing on changes in temperature, precipitation patterns, and the frequency of extreme weather events. Using an Exponential Growth Model, we estimated the population from 2020 to 2050 across Africa's five sub-regions. The analysis assumes a 5% reduction in crop yields for every degree of warming above historical levels, with a minimum requirement of 225 kg of cereals per person per year. Climate change is a critical factor in Africa's food systems, with an average temperature increase of approximately +0.3 °C per decade. By 2050, the total food required to meet the 2100-kilocalorie per adult equivalent per day will rise to 558.7 million tons annually, up from 438.3 million tons in 2020. We conclude that Africa's current food systems are unsustainable, lacking resilience to climate shocks and relying heavily on rain-fed agriculture with inadequate infrastructure and technology. We call for a transformation in food systems through policy reform, technological and structural changes, solutions to land degradation, and proven methods of increasing crop yields that take the needs of communities into account.
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DOI: 10.3390/foods14020262
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