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A glossary of relevant words and their definitions.



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G

Global Hectare (gha)

A hectare of biologically productive land or sea area with
world average bioproductivity in a given year. Both Ecological
Footprint and biocapacity results are expressed in this globally
comparable, standardized unit. Since 2012, all Footprint
and biocapacity results are expressed in constant global
hectares, global hectares which for all previous years have been
normalized based on the average yields of productive area in
the most recent year being reported (Global Footprint Network,
2014).