Predictor Importance Values for water oak (Quercus nigra)

Predictor Name Importance Score Rank
Annual precipitation (mm)23.9614
Mean May-September precipitation (mm)26.668
Mean annual temperature (°C)24.2513
Mean May-September temperature (°C)18.8626
Mean temperature of coldest month (°C)27.94
Mean temperature of warmest month (°C)23.4116
Annual aridity index21.419
Minimum elevation16.6432
Maximum elevation16.5633
Average elevation17.3428
Median elevation14.6540
Range of elevation16.0234
Elevation coefficient ofvariation25.4310
Elevation standard deviation29.691
Annual daylength coefficient of variation28.573
Total available water capacity (cm, to 150 cm)26.86
Total available water supply (cm, to 150 cm)21.0222
Depth to water table (cm)29.252
Soil permeability rate (cm/hr)13.0542
Soil calcium carbonate (% by weight)19.8225
Soil cation-exchange capacity17.3129
Soil pH21.7418
Soil bulk density (g/cm3)25.549
Organic matter content (% by weight)26.95
Potential soil productivity21.1321
Soil erodibility factor, rock fragment free25.0111
Soil erosion by wind (tons/acre/year)11.5244
Percent soil passing sieve No. 10 (coarse)21.3320
Percent soil passing sieve No. 200 (fine)20.9323
Percent clay (< 0.002 mm size)24.6912
Percent sand (< 0.002 mm size)23.5415
Percent silt (< 0.002 mm size)16.8630
Percent of texture clayey15.7835
Percent of texture loamy16.8231
Percent of texture sandy18.2227
Percent of texture other26.777
Alfisol (%)19.9524
Aridisol (%)1.0445
Entisol (%)11.5743
Histosol (%)15.3537
Inceptisol (%)15.7636
Mollisol (%)14.9339
Spodosol (%)13.2441
Ultisol (%)22.9817
Vertisol (%)15.3538