| Variable | Measurement | Era | SPSS code | N | Source |
| Existing biological capacity | Area units per capita, for human use. | 1996 | BioCapacity_1996 | 93 | Living Planet Report 2000; table 2 |
| Related variables: Ecological footprint, topic Ecology |
Related topics: Ecology |
Related themes: Geography |
States of Nations is an inventory of country characteristics. It is part of the World Database of Happiness
Keywords added: Cross-national, Ecology, Fertility, Agriculture, Farming, Geography