| The following table lists the importance scores and the overall predictor importance index for all the predictors as assessed by the RandomForest model. |  |
| Predictor | SumRankRecip | FreqTop10 | SumVarImp | VarImpIndx |
|---|---|---|---|---|
| Climate | ||||
| TAVG | 6.5 | 42 | 1828.2 | 47.6 |
| TJAN | 6.7 | 42 | 1838.3 | 48.1 |
| TJUL | 9.2 | 47 | 1921.9 | 54.9 |
| TMAYSEP | 11.2 | 40 | 1825.5 | 54.3 |
| PPT | 14.6 | 73 | 2143.8 | 76 |
| PPTMAYSEP | 22.5 | 94 | 2416.7 | 100 |
| JULJANDIFF | 6.9 | 37 | 1731 | 45.2 |
| Elevation | ||||
| ELV_CV | 5.6 | 39 | 1728.2 | 43.7 |
| ELV_MAX | 7.8 | 51 | 1817.5 | 52.7 |
| ELV_MEAN | 8.4 | 50 | 1856.9 | 53.8 |
| ELV_MIN | 6.8 | 37 | 1765.3 | 45.5 |
| ELV_RANGE | 7.9 | 48 | 1874.7 | 52.6 |
| Soil Type | ||||
| ALFISOL | 7.5 | 32 | 1628.7 | 42.8 |
| ARIDISOL | 1.8 | 0 | 16.8 | 0 |
| ENTISOL | 4.3 | 10 | 1259.3 | 24.8 |
| HISTOSOL | 3.5 | 7 | 921.8 | 17.8 |
| INCEPTIS | 4.6 | 25 | 1576 | 35 |
| MOLLISOL | 10.4 | 39 | 1660.4 | 50.4 |
| SPODOSOL | 3.6 | 6 | 819.6 | 16.1 |
| ULTISOL | 6 | 33 | 1574.5 | 40.1 |
| VERITSOL | 2.4 | 3 | 446 | 8 |
| Soil Properties | ||||
| BD | 2.4 | 2 | 971 | 14.9 |
| CLAY | 6.9 | 50 | 1864.7 | 51.6 |
| KFFACT | 7.5 | 13 | 1230.7 | 30.6 |
| NO10 | 9.7 | 46 | 1886.7 | 55 |
| NO200 | 11.3 | 53 | 1959 | 61.1 |
| OM | 4.7 | 19 | 1560.6 | 32.8 |
| ORD | 13.3 | 63 | 2090.4 | 69.7 |
| PERM | 5.9 | 35 | 1749.2 | 43.1 |
| PH | 6.5 | 41 | 1782.7 | 46.6 |
| ROCKDEP | 5.1 | 31 | 1631.3 | 38.7 |
| SLOPE | 17.6 | 76 | 2180.8 | 82.4 |
| AWC | 4.9 | 27 | 1707.9 | 38.1 |
| Landscape | ||||
| FRAG | 2.4 | 0 | 875.9 | 12.8 |
| AGRICULT | 11 | 55 | 1947.6 | 61.2 |
| FOREST | 11.8 | 59 | 1969 | 64.2 |
| NONFOR | 5.5 | 20 | 1575.5 | 34.6 |
| WATER | 2.6 | 5 | 502.8 | 9.8 |
