Carbon footprint:

A measure of how much CO2 emissions are associated with fossil energy use.

When studying ecological footprints the carbon footprint is added because it is a competing use of bio-productive space, since increasing CO2 concentration in the atmosphere is considered to represent a build-up of ecological debt, and is believed by the scientific community to be a primary driver of global warming.

Read more here: Wikipedia.

Ecological footprint:

A measure of how much area of biologically productive land and water an individual, population or activity requires to produce all the resources it consumes and to absorb the waste it generates, using prevailing technology and resource management practices.

The Ecological Footprint is usually measured in global hectares (gha). Because trade is global, an individual or country’s Footprint includes land or sea from all over the world.

Without further specification, Ecological Footprint generally refers to the Ecological Footprint of consumption.

Read more here: Wikipedia.


For any quantity and type of greenhouse gas, CO2e signifies the amount of COwhich would have the equivalent global warming impact.

Read more here: Ecometrica.