(in decreasing order of importance)
| Predictor Name | Importance Score | Rank |
|---|---|---|
| Mean May-September precipitation (mm) | 14.58 | 1 |
| Mean difference between July and January Temperature (°C) | 14.52 | 2 |
| Potential soil productivity (m3 of timber/ha) | 12.6 | 3 |
| Inceptisol (%) | 12.54 | 4 |
| Ultisol (%) | 12.27 | 5 |
| Soil slope (%) of a soil component | 11.41 | 6 |
| Range of elevation (m) | 11.24 | 7 |
| Soil pH | 10.93 | 8 |
| Cropland (%) | 10.83 | 9 |
| Average elevation (m) | 10.55 | 10 |
| Alfisol (%) | 10.06 | 11 |
| Mean January temperature (°C) | 9.73 | 12 |
| Depth to bedrock (cm) | 9.54 | 13 |
| Mean July temperature (°C) | 9.54 | 14 |
| Soil permeability rate (cm/hr) | 9.5 | 15 |
| Total available water capacity (cm, to 152 cm) | 9.42 | 16 |
| Annual precipitation (mm) | 9.02 | 17 |
| Percent clay (< 0.002 mm size) | 8.54 | 18 |
| Mean annual temperature (°C) | 8.51 | 19 |
| Organic matter content (% by weight) | 8.28 | 20 |
| Minimum elevation (m) | 7.94 | 21 |
| Maximum elevation (m) | 7.54 | 22 |
| Forest land (%) | 7.26 | 23 |
| Mollisol (%) | 7.21 | 24 |
| Mean May-September temperature (°C) | 6.74 | 25 |
| Histosol (%) | 6.69 | 26 |
| Soil erodibility factor, rock fragment free | 6.61 | 27 |
| Elevation coefficient of variation | 6.26 | 28 |
| Percent soil passing sieve No. 10 (coarse) | 5.66 | 29 |
| Entisol (%) | 5.52 | 30 |
| Percent soil passing sieve No. 200 (fine) | 4.47 | 31 |
| Soil bulk density (g/cm3) | 3.81 | 32 |
| Vertisol (%) | 3.5 | 33 |
| Nonforest land (%) | 3.46 | 34 |
| Water (%) | 2.26 | 35 |
| Spodosol (%) | 1.7 | 36 |
| Fragmentation Index (Riitters et al. 2002) | 0.89 | 37 |
| Aridisol (%) | 0 | 38 |