Predictor Importance Values for bur oak (Quercus macrocarpa)

Predictor Name Importance Score Rank
Annual precipitation (mm)20.2411
Mean May-September precipitation (mm)22.223
Mean annual temperature (°C)10.6440
Mean May-September temperature (°C)12.0739
Mean temperature of coldest month (°C)15.8530
Mean temperature of warmest month (°C)12.2838
Annual aridity index18.5917
Minimum elevation20.78
Maximum elevation23.641
Average elevation15.8828
Median elevation19.7414
Range of elevation16.525
Elevation coefficient ofvariation21.46
Elevation standard deviation21.785
Annual daylength coefficient of variation12.3437
Total available water capacity (cm, to 150 cm)17.3122
Total available water supply (cm, to 150 cm)16.2626
Depth to water table (cm)21.247
Soil permeability rate (cm/hr)20.549
Soil calcium carbonate (% by weight)18.7615
Soil cation-exchange capacity17.4621
Soil pH17.4820
Soil bulk density (g/cm3)15.7131
Organic matter content (% by weight)12.7536
Potential soil productivity16.0627
Soil erodibility factor, rock fragment free20.2910
Soil erosion by wind (tons/acre/year)1818
Percent soil passing sieve No. 10 (coarse)20.1312
Percent soil passing sieve No. 200 (fine)14.2832
Percent clay (< 0.002 mm size)15.8729
Percent sand (< 0.002 mm size)18.7316
Percent silt (< 0.002 mm size)17.8919
Percent of texture clayey13.1433
Percent of texture loamy16.6524
Percent of texture sandy12.8435
Percent of texture other16.7223
Alfisol (%)21.914
Aridisol (%)-145
Entisol (%)10.1643
Histosol (%)10.4441
Inceptisol (%)19.7913
Mollisol (%)22.452
Spodosol (%)13.1434
Ultisol (%)10.4342
Vertisol (%)6.1744