| Position | Landscape segment | Landscape fractional | SOC stock | Loss of SOC | Percentage |
| width (m) | segment width as | landscape | stock | change | |
| decimal | Mg C ha−1 | Mg C ha−1 | |||
| Prairie | |||||
| Interfluve | 23.7a* | 0.205a | 31.8a | ||
| Shoulder | 20.0a | 0.173a | 31.8a | ||
| Backlslope | 23.9a | 0.206a | 26.0a | ||
| Footslope | 20.9a | 0.180a | 30.3a | ||
| Toeslope | 27.3a | 0.236a | 40.8a | ||
| Total | 115.8a | 1.000a | 160.6a | ||
| Total without toeslope | 119.8a | ||||
| Cultivated agricultural land |
| ||||
| Interfluve | 22.5a | 0.237a | 32.3a | ||
| Shoulder | 14.6b | 0.153a | 18.7b | ||
| Backlslope | 15.6b | 0.164b | 24.2a | ||
| Footslope | 16.9b | 0.178a | 26.9a | ||
| Toeslope | 25.4a | 0.267a | 29.5b | ||
| Total | 95.0b | 1.000a | 131.6a | 29.0 | 18% |
| Total without toeslope | 102.1a | 17.7 | 11% |