Global Hectare

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Term Info
Global Hectare
Category Sustainable Development Terms
Last Edit By FIDIC
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Last Edit Date 2018-06-29

Global Hectare means :

SDABC2015.png The ABC for Sustainable Cities - A glossary for policy makers. 1st edition (2015)

In 2010, Earth’s bio capacity was approximately 12 billion global hectares (gha) – which amounts to about 1.7 gha for every person on the planet. This biologically productive land must also support the 10 million or more wild species with which we share the planet. A global hectare (gha) is a way of expressing productive capacity in a common unit. It is defined as a hectare with the world-average productivity of all biologically productive land and water in a given year (Kitzes et al., 2007). Ecological Footprint accounting normalises different types of areas to account for differences in land and sea productivity. Actual areas, in hectares, are converted into global hectares using equivalence factors, which account for productivity differences between land types (e.g., cropland versus forest product), and yield factors, which account for differences within land types between countries.

ISBN 978-2-940443-87-1 WWF; Living Planet Report® 2014