Extended Data Fig. 2: Cumulative calorie-corrected productivity-trade distribution curves.
From: Agricultural trade impacts global phosphorus use and partial productivity

a-f, Crop productivity of exporting and importing countries in terms of calorie-corrected partial factor productivity of fertilizer-P. g-l, Livestock production in terms of calorie-corrected partial factor productivity. Note: CPHE is the relative concentration of production in high-productivity countries applied to importing and exporting countries (CPHEim and CPHEex, dimensionless). CWPE is the CPHE weighted production efficacy applied to importing and exporting countries (CWPEim and CWPEex, M kcal kg-1 P). The error bars represent the change of the maximum productivity at 98.5%, 99.0% and 99.5% contributions to the total traded products (n = 3).