Variable | Method | Variogram | Model | Nugget | Range | Partial sill | Sill | Nugget/sill (%) | |
SOC % | Topsoil | Ordinary Kriging | Semivariogram | Exponential | 0.002 | 0.036 | 0.044 | 0.046 | 4.3 |
Ordinary Kriging | Semivariogram | Spherical | 0.02 | 0.036 | 0.02 | 0.04 | 50 | ||
Subsoil | Ordinary Kriging | Semivariogram | Exponential | 0.014 | 0.071 | 0.067 | 0.081 | 17.2 | |
Ordinary Kriging | Semivariogram | Spherical | 0.026 | 0.062 | 0.051 | 0.077 | 33.7 | ||
SOC kg/m2 | Topsoil | Ordinary Kriging | Semivariogram | Exponential | 0.0 | 0.036 | 0.508 | 0.508 | 0.0 |
Ordinary Kriging | Semivariogram | Spherical | 0.205 | 0.036 | 0.282 | 0.487 | 42 | ||
Subsoil | Ordinary Kriging | Semivariogram | Exponential | 0.1899 | 0.086 | 3.97 | 4.1599 | 4.5 | |
Ordinary Kriging | Semivariogram | Spherical | 0.655 | 0.062 | 3.099 | 3.754 | 17.0 | ||
OC-SOC | Topsoil | Ordinary Cokriging | Semivariogram; Semivariogram | Exponential | 0.0 | 0.0365 | 0.0475; 0.0930; 0.0930; 0.5085 | - | - |
Ordinary Cokriging | Semivariogram; Semivariogram | Spherical | 0.001; 0.0031 | 0.0365 | 0.0468; 0.0849; 0.0849; 0.5098 | - | - | ||
Subsoil | Ordinary Cokriging | Semivariogram; Semivariogram | Exponential | 0.0 | 0.07 | 0.0916; 0.2350; 0.2350; 3.9105 | - | - | |
Ordinary Cokriging | Semivariogram; Semivariogram | Spherical | 0.0208; 0.5841 | 0.0573 | 0.0625; 0.2859; 0.2859; 3.0605 | - | - |