Biocapacity & Ecological Footprint
Biocapacity of bio-sphere is the carrying capacity of the bio-sphere in terms of productivity and waste-absorbing capability to produce what is required for consumption and to absorb the waste generated by human activities. As per the Living Planet Report 2008 biocapacity of the earth is estimated as 2.1 global hectares(gha) per person in 2005.
Ecological Footprint measures the humanity's demand on the bio-sphere in terms of the area of biologically productive land and sea required to provide the resources we use and absorb our waste. In 2005 global ecological footprint was 2.7 global hectares(gha) per person. A global hectare is a hectare with world average ability to produce resources and absorb waste which includes sequestration of carbon dioxide.