| Mass of SOC | Landscape | Landscape | Weighed mass of SOC | Cropland | |
| Landscape | in 1 m layer | Segment | Segment % | in Landscape Segment | impact on SOC |
| Position | Mg∙C/ha | Length in m | of Transect | Mg∙C/ha | % |
| Prairie Plots | |||||
| Summit | 214a | 26.7a | 0.15 | 32.6a | |
| Shoulder | 218a | 30.6a | 0.17 | 38.0a | |
| U. Backslope | 221a | 31.3a | 0.18 | 39.4a | |
| L. Backslope | 242a | 26.1a | 0.15 | 36.1a | |
| Footslope | 223a | 27.2a | 0.16 | 34.7a | |
| Toeslope | 261a | 33.4a | 0.19 | 49.8a | |
| Total | 1379a | 175a | 230a | ||
| Cropland Plots | |||||
| Summit | 109b | 22.9a | 0.14 | 14.8b | −55 |
| Shoulder | 99b | 27a | 0.16 | 15.9b | −58 |
| U. Backslope | 58b | 30a | 0.18 | 10.2b | −74 |
| L. Backslope | 35b | 26.9a | 0.16 | 5.5b | −85 |
| Footslope | 85b | 26.5a | 0.16 | 13.3b | −62 |
| Toeslope | 257a | 35.8a | 0.21 | 54.4b | 9 |
| Total | 642b | 169a | 114b | −51 | |