Predictor Importance Values for sassafras (Sassafras albidum)

Predictor Name Importance Score Rank
Annual precipitation (mm)20.68
Mean May-September precipitation (mm)16.820
Mean annual temperature (°C)11.9331
Mean May-September temperature (°C)6.3243
Mean temperature of coldest month (°C)16.6521
Mean temperature of warmest month (°C)14.2525
Annual aridity index21.866
Minimum elevation17.8816
Maximum elevation15.9922
Average elevation8.2739
Median elevation17.6717
Range of elevation15.8623
Elevation coefficient ofvariation22.454
Elevation standard deviation13.2728
Annual daylength coefficient of variation10.5133
Total available water capacity (cm, to 150 cm)25.222
Total available water supply (cm, to 150 cm)17.6118
Depth to water table (cm)29.31
Soil permeability rate (cm/hr)19.8113
Soil calcium carbonate (% by weight)17.9114
Soil cation-exchange capacity20.1210
Soil pH20.199
Soil bulk density (g/cm3)23.093
Organic matter content (% by weight)8.6538
Potential soil productivity17.915
Soil erodibility factor, rock fragment free8.8237
Soil erosion by wind (tons/acre/year)21.95
Percent soil passing sieve No. 10 (coarse)20.0512
Percent soil passing sieve No. 200 (fine)4.1844
Percent clay (< 0.002 mm size)10.1834
Percent sand (< 0.002 mm size)6.3342
Percent silt (< 0.002 mm size)9.3236
Percent of texture clayey10.8532
Percent of texture loamy14.0127
Percent of texture sandy12.8129
Percent of texture other7.2541
Alfisol (%)12.2730
Aridisol (%)045
Entisol (%)14.0726
Histosol (%)7.9240
Inceptisol (%)20.0811
Mollisol (%)21.847
Spodosol (%)14.4824
Ultisol (%)16.9319
Vertisol (%)9.5235