AT | our own dataset | 15 | Grassland | 909 | 672 | - | 1554 |
AT | Upper Austria (BORIS) | 567 | cropland | 540 | 400 | - | 1140 |
AT | Upper Austria (BORIS) | 656 | Grassland | 1047 | 410 | - | 2460 |
AT | BAW (internal dataset) | 348 | Forest | 1024 | 400 | - | 2050 |
AT | A. Bohner (other studies) | 18 | Grassland | 663 | 420 | - | 1830 |
CH | J. Leifeld | 116 | Grassland | 760 | 430 | - | 1220 |
IT | EURAC | 12 | Grassland | 1607 | 986 | - | 2043 |
parameter | all data (n = 1732) | cropland (n = 567) | forest (n = 348) | grassland (n = 817) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
mean | min | max | mean | min | max | mean | min | Max | mean | min | max | |||||
Depth [cm] | 20 | 1 | - | 70 | 26 | 10 | - | 50 | 27 | 8 | - | 60 | 12 | 1 | - | 70 |
SOC [mg g−1] | 39 | 1 | - | 295 | 19 | 4 | - | 120 | 32 | 10 | - | 185 | 55 | 1 | - | 295 |
Sand [mg g−1] | 280 | 0 | - | 910 | 217 | 0 | - | 721 | 35 | 21 | - | 717 | 289 | 18 | - | 910 |
Silt [mg g−1] | 538 | 2 | - | 934 | 587 | 172 | - | 934 | 446 | 172 | - | 703 | 544 | 20 | - | 882 |
Clay [mg g−1] | 184 | 1 | - | 701 | 197 | 35 | - | 467 | 207 | 36 | - | 701 | 167 | 10 | - | 560 |
BD [g cm−3] | 1.2 | 0.3 | - | 2.2 | 1.4 | 0.5 | - | 1.7 | 1 | 0.4 | - | 2.2 | 1.1 | 0.3 | - | 1.7 |
EQ | landuse | Intercept | Depth [cm] | SOC−0.5 [%]0.5 | Silt [%] | Clay [%] | R2 | RMSE | PU [%] | CV mR2 |
---|---|---|---|---|---|---|---|---|---|---|
1 | all data | 1.650 | −0.0022 |
−0.3157 |
0.0028 |
0.58 | 0.190 | 21 | 0.57 | |
2 | cropland | 1.873 | −0.0021 |
−0.3042 |
0.43 | 0,105 | 9 | 0.41 | ||
3 | forest | 1.523 | −0.3199 |
0.58 | 0.205 | 25 | 0.56 | |||
4 | grassland | 1.698 | −0.2737 |
0.0009 |
−0.0020 |
0.65 | 0.171 | 17 | 0.65 | |
5 | all data | 1.682 | −0.2738 |
0.55 | 0.197 | 24 | ||||
6 | cropland | 1.720 | −0.2306 |
0.41 | 0.107 | 9 | ||||
7 | grassland | 1.693 | −0.2635 |
0.65 | 0.157 | 18 |