| TERRESTRIAL ECOSYSTEMS | NPP (g/m2/yr) | AREA (106km2) | TOTAL PR0DUCTION (1012kg/yr) |
|---|---|---|---|
| Tropical rainforest | 2,000 | 17.0 | 34.00 |
| Tropical seasonal forest | 1,500 | 7.5 | 11.25 |
| Temperate rainforest | 1,300 | 5.0 | 0.01 |
| Temperate seasonal forest | 1,200 | 7.0 | 8.40 |
| Boreal forest | 800 | 12.0 | 9.60 |
| Savanna | 700 | 15.0 | 10.50 |
| Cultivated land | 650 | 14.0 | 9.10 |
| Woodland/shrubland | 600 | 8.0 | 4.80 |
| Temperate grassland | 500 | 9.0 | 4.50 |
| Tundra | 140 | 8.0 | 1.12 |
| Desert shrub | 70 | 18.0 | 1.26 |
| AQUATIC ECOSYSTEMS | |||
| Swamp and marsh | 2,500 | 2.0 | 5.00 |
| Coral reef | 2,000 | 0.6 | 1.20 |
| Salt marsh | 1,800 | 1.4 | 2.52 |
| Upwelling zones | 500 | 0.4 | 0.20 |
| Lake and stream | 500 | 2.5 | 1.25 |
| Continental shelf | 360 | 26.6 | 9.58 |
| Open ocean | 125 | 332.0 | 41.50 |