Global hectares are hectares with world - average productivity for all productive land and water areas in a given year. (earthday.org)
Both measures are expressed in global hectares — globally comparable, standardized hectares with world average productivity. (overshootday.org)
In my previous REM article, In search of a great real estate manager, some other research indicators were disclosed, such as the «agent to manager ratio» and «average productivity per agent». (remonline.com)