In the last decades several indicators have been proposed to guide decision makers and
help manage natural capital. Among such indicators is the Ecological Footprint, a resource
accounting tool with a biophysical and thermodynamic basis. In our recent paper (Niccolucci
et al., 2009), a three dimensional Ecological Footprint (3DEF) model was proposed to better
explain the difference between human demand for natural capital stocks and resource flows.
Such 3DEF model has two relevant dimensions: the surface area (or Footprint size–EFsize) …