Table 1 Biomass productivity, nitrous oxide fluxes, and carbon density parameters for feed and land use categories in model.
Land use | Feed | Annual yield | Available feed biomass | Use efficiency | Nitrous oxide flux | Carbon density | ||
|---|---|---|---|---|---|---|---|---|
Mg DM ha−1 | Mg DM ha−1 year−1 | Fraction | kg N2O ha−1 year−1 | Mg C ha−1 | ||||
Soilsb | Other poolse | Total | ||||||
Croplands | Maize | 1.46d | 0.44 (bran) 2.18 (stover) | 0.95 | 0.73 (stover) 1.03 (bran) | 38.0 | 3.5 | 41.5 |
Sunflower | 1.03d | 0.36 (cake) | 0.95 | 0.90 | ||||
Grasslands | Napier grass | 13.04a | 13.10 | 0.75 | 0.51 | 48.0 | 4.5 | 52.5 |
Pastures | 10.00c | 3.04 | 0.50 | 0.08 | ||||
Grasslands | 3.00c | 1.50 | 0.50 | 0.13 | ||||
Wetlands | 42.0 | 4.4 | 46.4 | |||||
Shrubland | 41.0 | 16.6 | 57.6 | |||||
Forest | 69.0 | 37.8 | 106.8 | |||||
