Table 5.
Total net primary productivity (TNPP, g C m-2 yr-1) and soil organic carbon (SOC, kg C m-3) density (0 to 100 cm in depth) under optimal conditions based on Miami model modified by Friedlingstein et al. [42].
| Biogeoclimate zone | Area (km2) (% of total) | TNPP (g C m-2 yr-1) | SOC (kg C m-3) | |
|---|---|---|---|---|
| Forest | ||||
| Boreal | 41027(5.3) | 426.6 ± 100 | 12.4 ± 7.8 | |
| Cool temperate | 240333(30.8) | 455.1 ± 97 | 9.5 ± 3.8 | |
| Warm temperate | 79075(10.1) | 569.4 ± 90 | 11.6 ± 3.3 | |
| Mediterranean | 10660(1.4) | 652.8 ± 49 | 13.1 ± 1.0 | |
| Total | 371097(48) | 780.8 ± 124 Tg C | 17.3 ± 5 Pg C | |
| Woodland/Shrubland | ||||
| Cool temperate | 68217(8.7) | 358.8 ± 30 | 8.1 ± 0.6 | |
| Warm temperate | 68998(8.8) | 456.0 ± 27 | 10.4 ± 0.5 | |
| Mediterranean | 13392(1.7) | 564.2 ± 30 | 12.8 ± 0.6 | |
| Total | 150608(19) | 207.7 ± 13 Tg C | 4.7 ± 0.3 Pg C | |
| Grassland (Steppe) | ||||
| Cool temperate | 43068(5.5) | 334.5 ± 20 | 7.9 ± 0.4 | |
| Warm temperate | 39837(5.1) | 425.9 ± 29 | 10.1 ± 0.6 | |
| Mediterranean | 13629(1.7) | 498.8 ± 28 | 11.9 ± 0.6 | |
| Total | 96533(12) | 121.6 ± 7 Tg C | 2.9 ± 0.2 Pg C | |
| Barren/Sparsely Vegetated Land | ||||
| Sub(nival) | 1447(0.2) | 583.5 ± 200 | 32.6 ± 20.5 | |
| Alpine | 4997(0.6) | 480.4 ± 154 | 21.7 ± 16.1 | |
| Boreal | 2218(0.3) | 451.6 ± 116 | 18.3 ± 11.5 | |
| Cool temperate | 52045(6.7) | 306.0 ± 19.6 | 7.6 ± 0.3 | |
| Warm temperate | 76653(9.8) | 326.0 ± 52 | 8.4 ± 1.0 | |
| Mediterranean | 24997(3.2) | 380.4 ± 51 | 10.0 ± 0.8 | |
| Total | 162357(21) | 410.4 ± 96 Tg C | 16.0 ± 8 Pg C | |
| Grand Total (Pg C yr-1) | 780595(100) | 1.5 ± 0.2 | 40.9 ± 14 | |
Values given as mean ± standard deviation may not total due to rounding.