Figure 3: Temporal and spatial patterns of residual soil P in croplands.
From: Lessons from temporal and spatial patterns in global use of N and P fertilizer on cropland
(a) Cumulative residual soil P in cropland for the world, high-income countries, China and India, transition countries and sub-Saharan Africa for the period 1970–2010. See Fig. 1 for the definition of the regions; Tg = teragram; 1 Tg = 1012 gram = 1 million metric ton; (b) Cumulative residual soil P for 0.5 by 0.5 degree grid cells for the year 2010. The SI Movie showing the changes in cumulative residual soil P during the time period 1970–2010 is available in the Supplementary Information. Figure 3b was created with python 2.7 matplotlib module88.
