Predictor Importance Values for blackjack oak (Quercus marilandica)

Predictor Name Importance Score Rank
Annual precipitation (mm)9.7340
Mean May-September precipitation (mm)13.5829
Mean annual temperature (°C)18.3911
Mean May-September temperature (°C)14.7623
Mean temperature of coldest month (°C)15.0521
Mean temperature of warmest month (°C)1910
Annual aridity index10.4737
Minimum elevation15.2720
Maximum elevation16.615
Average elevation14.4924
Median elevation12.1632
Range of elevation22.464
Elevation coefficient ofvariation12.0333
Elevation standard deviation15.6519
Annual daylength coefficient of variation16.0616
Total available water capacity (cm, to 150 cm)1618
Total available water supply (cm, to 150 cm)19.089
Depth to water table (cm)14.2425
Soil permeability rate (cm/hr)14.922
Soil calcium carbonate (% by weight)14.0927
Soil cation-exchange capacity13.4131
Soil pH19.897
Soil bulk density (g/cm3)29.641
Organic matter content (% by weight)16.8314
Potential soil productivity9.7439
Soil erodibility factor, rock fragment free13.7728
Soil erosion by wind (tons/acre/year)20.456
Percent soil passing sieve No. 10 (coarse)17.612
Percent soil passing sieve No. 200 (fine)19.598
Percent clay (< 0.002 mm size)16.0417
Percent sand (< 0.002 mm size)10.8336
Percent silt (< 0.002 mm size)13.4630
Percent of texture clayey11.4735
Percent of texture loamy11.8734
Percent of texture sandy17.4513
Percent of texture other25.112
Alfisol (%)21.95
Aridisol (%)-0.9445
Entisol (%)5.4442
Histosol (%)4.3744
Inceptisol (%)22.953
Mollisol (%)14.2426
Spodosol (%)4.5843
Ultisol (%)10.1738
Vertisol (%)9.1241