| Photosynthetic stocks and productivity | |
| Total terrestrial biomass | 1244 Pg |
| Total terrestrial annual NPP | 132 Pg |
| Total aquatic annual NPP | 92 Pg |
| By analysis of food consumption: | |
| Human population | 5 Billion |
| Caloric intake | 2500 kcal/per/d |
| Total OM used: |
0.91 Pg |
| Calculated from - food prduction, animal production, wood product use, fisheries output, etc... i.e. all inputs and all outputs, whether or not they get eaten: | |
| Total OM used: |
7.2 Pg |
| Percent NPP: |
3.2% |