.jpg)
Ecological Footprint Analysis measures the amount of renewable and non-renewable ecologically productive land area required to support the resource demands and absorb the wastes of a given population or specific activities.
From a sustainability perspective, when humanity's Footprint exceeds the amount of renewable biocapacity a draw down in natural capital is required and this is considered unsustainable. Global Footprint accounts over the last forty years indicate a twenty-five year growth trend beyond the amount of renewable biocapacity. In short, humanity's Ecological Footprint appears to have breached ecological limits and is thus unsustainable.
Ecological Footprint Analysis (EFA) also raises several important social equity concerns. When the total amount of ecologically productive land area included in EFA is divided by the human population, there are about 4.5 acres (1.89 hectares) available for each person.
http://redefiningprogress.org/footprint/
.jpg)
