Climate Change and Africa’s Food Deficit

"Africa is now facing the same type of long-term food deficit problem that India faced in the early 1960s". This is according to a Study by the International Food Policy Research Institute (IFPRI) which recommends that Africa should spend more on Agriculture in order to avert a possible crisis. Sub-Saharan Africa’s (SSA) food deficit is also increasingly compounded by climate change. In fact, one-third of the African population lives in drought-prone areas while two-thirds of SSA’s surface area is desert or dry land. The major impact of climate change on food security includes changes in precipitation and insulation, changes in the length of growing seasons and changes in carbon uptake. Additionally there are declines in agricultural yields, decline in the quality of pasture and livestock production, and reduced vegetation cover which place local people at risk of famine.

Climate change also affects rain-fed agriculture which is the main safety net of poor people in rural areas where agriculture employs about 70 percent of the population. The rain related challenges can either cause drought or floods and the maps shown (Source: World Bank Development Report 2010) indicates the countries likely to be affected by either.

Despite the fact that most people in SSA are engaged in agriculture, its productivity has stagnated for several years across the whole sub-region making the region a net food importer. In fact, according to the Food and Agriculture Organization’s (FAO) list for 2010 of Low-Income Food-Deficit Countries (LIFDC) - 44 of the 77 low income food deficit countries in the world are in Africa.

An example is the disappearance of Lake Chad over a 40 year period as shown in the image (source: GRID Arendal UNEP). Lake Chad is shared by Nigeria, Chad, Cameroon and Niger and its disappearance is a grim reminder of the dramatic ecological challenges and food shortages that lie ahead. The lake's area has decreased by 80 per cent over the last four decades, with catastrophic impacts on those reliant on its resources. Lake Victoria is receding as well and projected reductions in the rivers in the Nile region signal difficult times ahead. 

Another dimension is that of water, storage and infrastructure. Most rivers cross more than one country, necessitating effective cooperation across borders. Africa’s 63 transboundary river basins together account for 90 percent of its surface water resources necessitating regional water control systems.  Armed conflict further complicates agriculture and climate change risk management. For poor people living in weak or unstable states, climate change will deepen hunger, suffering, and intensify the risks of food insecurity, mass migration, violent conflict, and further fragility.

According to a World Bank Publication, by 2050, Sub-Saharan Africa will need to feed more people in a harsher climate. Agriculture will simply have to become more productive, getting more crop per drop while protecting ecosystems. Water resources need to be managed better by scaling up existing infrastructure to manage watersheds, rainfed agriculture and protecting forests. Improved planning for storage, power transmission, and irrigation including screening investments for climate risks will also be necessary. Countries will need to develop mechanisms for collaboration across sectors and countries.

There is a role for innovation and academic research institutions as well. This could be done by adopting simple technologies suitable for small farmers such as low-cost drip irrigation and storage of rainwater. African farmers should also be helped to work with new crop varieties. One example is "New Rice for Africa" (Nerica), an Asian-African hybrid developed in Africa with support from the Japanese International Cooperation Agency (JICA), that combines drought resistance with high yields and high protein content. 

NERICA, the new rice variety was the result of years of work by a team of plant breeders and particularly Sierra Leonean molecular scientist Monty Jones at the West Africa Rice Development Association (WARDA – now the Africa Rice Center). When Dr. Jones (a 2004 winner of the WFP) set up the biotechnology research program in 1991, some 240 million people in West Africa were dependant on rice as their primary source of food energy and protein, but the majority of Africa’s rice was imported, at an annual cost of US$1 billion. According to WIPO, the most popular Nerica rice takes only three months to ripen, as opposed to six months for the parent species, thus allowing African farmers to “double crop” it in a single growing season with nutritionally rich vegetables or high-value fiber crops. 

Meanwhile in 2009, Dr. Gebisa Ejeta of Ethiopia, was the recipient of the World Food Prize for his sorghum hybrids which are resistant to drought and the devastating Striga weed and which has dramatically increased the production and availability of one of the world’s five principal grains and enhanced the food supply of hundreds of millions of people in sub-Saharan Africa.

Overall, a Climate Strategy for Africa and food security should also include: sustainable land and forest management; increased knowledge and analytical capacity, improved weather forecasting, research, extension services, market infrastructure and renewal energy generation systems. Farmers will also need to benefit from integrating biodiversity into the landscape and reducing carbon emissions from soil and deforestation.