Ecological footprint

The ecological footprint is a comprehensive metric that quantifies the impact of human actions on the Earth's natural resources. It is expressed as the area of biologically productive land and sea required to provide the resources consumed by a person, population, or activity, and to absorb the resulting waste, especially carbon emissions. This metric serves as a central tool for assessing sustainability and environmental impacts at the individual, organizational, regional, and global levels.

The ecological footprint measures how much nature, in the form of cropland, pasture, forest, fisheries, developed land, and areas for carbon absorption, is needed to support a certain lifestyle. The results are often expressed in global hectares (gha), enabling international comparison. The calculation is done by adding the productive areas required for resource extraction and waste absorption, divided by the population to obtain a per capita value.

By comparing the ecological footprint with biological capacity, analysts can determine whether a population lives within ecological limits or exceeds them, leading to ecological overshoot. If the footprint exceeds biological capacity, it indicates unsustainable resource use. Thus, the ecological footprint is a crucial tool for understanding the relationship between human actions and the ecological boundaries of the Earth and promoting measures for a more sustainable society.