FIGURE 1. Spatial distribution of the annual NPP resources required by the human population.
From the following article:
Global patterns in human consumption of net primary production
Marc L. Imhoff, Lahouari Bounoua, Taylor Ricketts, Colby Loucks, Robert Harriss and William T. Lawrence
Nature 429, 870-873(24 June 2004)
doi:10.1038/nature02619
As measured by a, HANPP and b, HANPP as a percentage of local NPP. Both maps use the intermediate estimate for HANPP and are in units of carbon.
