Predictors Importance for white oak

(in decreasing order of importance)

Predictor Name Importance Score Rank
Soil slope (%) of a soil component32.791
Mean July temperature (°C)29.82
Mean annual temperature (°C)28.913
Mean May-September temperature (°C)28.164
Percent clay (< 0.002 mm size)26.95
Percent soil passing sieve No. 10 (coarse)26.826
Potential soil productivity (m3 of timber/ha)26.617
Soil pH24.958
Percent soil passing sieve No. 200 (fine)24.579
Mean difference between July and January Temperature (°C)22.6610
Forest land (%)22.5311
Ultisol (%)22.4912
Mean May-September precipitation (mm)22.2313
Mean January temperature (°C)21.0614
Soil permeability rate (cm/hr)21.0415
Cropland (%)20.3416
Mollisol (%)20.2617
Depth to bedrock (cm)16.1918
Range of elevation (m)15.8619
Nonforest land (%)15.2620
Elevation coefficient of variation15.221
Soil erodibility factor, rock fragment free15.0622
Alfisol (%)14.6923
Total available water capacity (cm, to 152 cm)14.0724
Organic matter content (% by weight)13.9725
Maximum elevation (m)13.8726
Entisol (%)13.4627
Average elevation (m)13.2328
Spodosol (%)13.1429
Inceptisol (%)1330
Annual precipitation (mm)11.8531
Histosol (%)11.3132
Soil bulk density (g/cm3)10.0133
Minimum elevation (m)9.8534
Fragmentation Index (Riitters et al. 2002)5.6335
Water (%)5.2936
Vertisol (%)0.8237
Aridisol (%)038