Predictor Importance Values for Shumard oak (Quercus shumardii)

Predictor Name Importance Score Rank
Annual precipitation (mm)14.6713
Mean May-September precipitation (mm)17.46
Mean annual temperature (°C)13.3825
Mean May-September temperature (°C)9.6640
Mean temperature of coldest month (°C)12.9226
Mean temperature of warmest month (°C)9.8338
Annual aridity index13.9518
Minimum elevation6.8543
Maximum elevation8.8341
Average elevation9.9736
Median elevation10.4134
Range of elevation11.8129
Elevation coefficient ofvariation13.4623
Elevation standard deviation12.4828
Annual daylength coefficient of variation13.6422
Total available water capacity (cm, to 150 cm)22.321
Total available water supply (cm, to 150 cm)21.982
Depth to water table (cm)18.065
Soil permeability rate (cm/hr)16.678
Soil calcium carbonate (% by weight)16.299
Soil cation-exchange capacity18.354
Soil pH13.920
Soil bulk density (g/cm3)15.810
Organic matter content (% by weight)14.5414
Potential soil productivity16.687
Soil erodibility factor, rock fragment free14.0217
Soil erosion by wind (tons/acre/year)18.53
Percent soil passing sieve No. 10 (coarse)15.7711
Percent soil passing sieve No. 200 (fine)10.4135
Percent clay (< 0.002 mm size)13.6921
Percent sand (< 0.002 mm size)10.7233
Percent silt (< 0.002 mm size)14.3115
Percent of texture clayey11.7930
Percent of texture loamy14.8212
Percent of texture sandy13.919
Percent of texture other13.4124
Alfisol (%)9.739
Aridisol (%)-045
Entisol (%)9.8337
Histosol (%)4.2144
Inceptisol (%)11.6131
Mollisol (%)14.2916
Spodosol (%)7.0742
Ultisol (%)12.7927
Vertisol (%)11.4532