| Variables | AUC |
|---|---|
| Stand type | 0.435 |
| Stand age class | ∗0.630 |
| Stand volume | ∗0.609 |
| Stand density | ∗0.676 |
| Slope | 0.437 |
| Aspect | 0.561 |
| Elevation | ∗0.633 |
| Landform | ∗0.773 |
| TWI | ∗0.617 |
| Solar | ∗0.822 |
| Soil depth | 0.421 |
| Soil fertility | 0.534 |
| Soil texture | ∗0.608 |
| Mean January temperature | ∗0.723 |
| Mean April temperature | ∗0.721 |
| Mean August temperature | 0.530 |
| Mean annual temperature | ∗0.679 |
| Mean January precipitation | ∗0.608 |
| Mean April precipitation | 0.518 |
| Mean August precipitation | ∗0.644 |
| Mean annual precipitation | ∗0.601 |