Extended Data Fig. 4: Comparison of the concentration of production in high efficiency countries (CPHE) countries.
From: Food and feed trade has greatly impacted global land and nitrogen use efficiencies over 1961–2017
Based on crop productivity expressed as energy (upper panel) and protein (bottom panel) in 1960s, 1970s, 1980s, 1990s, 2000s and 2010s.
