Table 2 Semi-variogram characteristics of measured soil properties.
From: Farm-scale soil spatial variability at a mountain research centre in Northwestern Himalayas
Parameters | Model | Nugget (C0) | Partial sill (C1) | Sill (C0 + C1) | Range (m) | Ratio (Nugget/sill) | Spatial dependence | RMSE |
|---|---|---|---|---|---|---|---|---|
BD | Gaussian | 0.001 | 0.007 | 0.008 | 11.55 | 0.11 | Strong | 0.03 |
PD | Gaussian | 0.003 | 0.003 | 0.007 | 1.14 | 0.52 | Moderate | 0.17 |
Porosity | Gaussian | 0.000 | 0.009 | 0.009 | 0.92 | 0 | Strong | 4.14 |
pH | Gaussian | 0.000 | 0.043 | 0.044 | 9.33 | 0.01 | Strong | 0.02 |
EC | Spherical | 0.000 | 0.561 | 0.561 | 7.62 | 0 | Strong | 0.01 |
OC | Spherical | 0.000 | 0.020 | 0.021 | 1.32 | 0.04 | Strong | 0.06 |
N | Spherical | 0.01 | 0.014 | 0.026 | 1.07 | 0.45 | Moderate | 41.26 |
P | Spherical | 0.00 | 0.088 | 0.095 | 3.56 | 0.07 | Strong | 3.19 |
K | Gaussian | 0.00 | 0.025 | 0.025 | 0.84 | 0.02 | Strong | 14.24 |
S | Spherical | 0.51 | 0.544 | 1.060 | 0.93 | 0.48 | Moderate | 0.98 |
Ex. Ca | Spherical | 0.00 | 0.014 | 0.014 | 1.32 | 0 | Strong | 0.63 |
Ex. Mg | Spherical | 0.03 | 0.00 | 0.036 | 2.88 | 0.84 | Weak | 0.49 |
Fe | Exponential | 0.00 | 31.30 | 36.088 | 0.92 | 0.13 | Strong | 3.52 |
Mn | Gaussian | 0.00 | 0.05 | 0.052 | 1.41 | 0.01 | Strong | 2.77 |
Cu | Spherical | 0.00 | 1.01 | 1.011 | 10.26 | 0 | Strong | 1.00 |
Zn | Spherical | 0.00 | 0.03 | 0.039 | 1.23 | 0.17 | Strong | 0.10 |
