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Relative changes in food supply (crops and livestock): industrial and developing countries

Year: 2007 Author: Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Description:
Over the past 40 years, globally, intensification of cultivated systems has been the primary source (almost 80%) of increased output. But some countries, predominantly found in sub-Saharan Africa, have had persistently low levels of productivity, and continue to rely on expansion of cultivated area.
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