Ecological Footprint (EF)
Term introduced by William Rees in 1992 and elaborated upon in his book, coauthored with Mathis Wackernagel, Our Ecological Footprint: Reducing Human Impact on the Earth, New Society Publishers, 1996. A measure of how much land and water is needed to produce the resources we consume and to dispose of the waste we produce. Related term: Carbon footprint
Example of Ecological Footprint (EF):
The ecological footprint of coal mining includes destruction of habitats of native species, as well as air and water pollution.