| Stand Variables | Stand density | Low | 1 |
| Medium | 2 |
| Dense | 3 |
| Stand volume | m3/ha | |
| Stand age class | 10year interval | |
| Stand type | Coniferous forest, | 1 |
| Deciduous forest, | 2 |
| Mixed forest | 3 |
| Topographic Variables | Elevation | Elevation (m) | |
| Aspect | southwest (=0) to northeast (=2) | |
| Slope | Slope (°) | |
| Landform | Ridge | 1 |
| Upper slope | 2 |
| Lower slope | 3 |
| Valley | 4 |
| Solar | Potential radiation index | |
| TWI | Topographic wetness index | |
| Soil Variables | Soil depth | Shallow (<30 cm) | 1 |
| Medium (30–60 cm) | 2 |
| Deep (>60 cm) | 3 |
| Fertility | Low | 1 |
| Medium | 2 |
| High | 3 |
| Texture | Clay loam | 1 |
| Loam | 2 |
| Sandy loam | 3 |
| Climate Variables | Precipitation | Average Annual Precipitation (mm) | |
| Average precipitation in January (mm) | |
| Average precipitation in April (mm) | |
| Average precipitation in August (mm) | |
| Temperature | Annual average temperature (°C) | |
| January average temperature (°C) | |
| April average temperature (°C) | |
| August average temperature (°C) | |