Estimate an average person’s annual consumption of particular items. When an
economy is studied, production-, import – and export figures can be used.
• Estimate the land area needed per capita for the production of each major consumption
item. Dividing average annual consumption of the item by the average annual productivity
or yield, the yield can be world average or local. When several inputs are considered areas
are estimated separately for each input.
• The areas of the items are added for one person (not adding overlapping areas).
• The footprint of the defined population is calculated from the per capita value.