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. 2000 Oct 24;97(23):12428–12432. doi: 10.1073/pnas.220280097

Table 1.

Global terrestrial NPP and carbon storage in vegetation biomass and soil carbon reservoirs during the late Carboniferous

Simulation NPP, Gt C yr−1 Vegetation biomass, Gt C Soil organic matter, Gt C
Case 1. 21% O2, 0.03% CO2 (control case) 47 473 1,004
Case 2. 35% O2, 0.03% CO2 38 (−9) 373 (−100) 888 (−116)
Case 3. 35% O2, 0.045% CO2 44 (−3) 463 (−10) 984 (−20)
Case 4. 35% O2, 0.06% CO2 50 (+3) 554 (+81) 1,084 (+80)

Results were obtained by forcing the terrestrial carbon cycle with the same climate with different prescribed pO2 and pCO2 values. Values in parentheses denote the differences relative to the control case. Note that 1 Gt = 1012 kg.