[B]y 2050, hotter conditions, coupled with shifting rainfall patterns, could make anywhere from 500,000 to one million square kilometers of marginal African farmland no longer able to support even a subsistence level of food crops. However, the land, on which some 20 to 35 million people currently live, may still support livestock.
Boosting livestock production could be an attractive alternative for millions of poor farmers across Africa who, in the coming decades, could find that climate change has rendered their lands unsuitable for crop cultivation yet still viable for raising animals, according to the study that appears this week in a special edition of the journal Environmental Science and Policy.
That’s from a press release put out by ILRI, the International Livestock Research Institute. The paper is from a special issue of Environmental Science and Policy on Food Security and Environmental Change, Food Security and Environmental Change: Linking Science, Development and Policy for Adaptation. Just skimming the contents gives me the willies.
By the way, Wikipedia says sub-Saharan Africa covers an area of 24.3 million square kilometers. It doesn’t say how much of that supports a subsistence level of food crops. So it is hard to know how much difference this prediction will really make.