Fig 4. Global harvested area shares by category of yield variability change in 1981–2008 for four crops calculated using the two datasets at four resolutions.

The data presented by Iizumi and Ramankutty [6] for 1981–2010 are shown as a reference (IR16). The yield variability changes were divided into the four categories and color coded. The gray shaded area shows that a crop of interest was harvested but yield data are lacking. Area shares less than 2% are not shown.