Predictors Importance for eastern white pine

(in decreasing order of importance)

Predictor Name Importance Score Rank
Mean July temperature (°C)36.31
Minimum elevation (m)28.172
Range of elevation (m)26.593
Percent clay (< 0.002 mm size)26.444
Inceptisol (%)25.925
Mean May-September temperature (°C)23.316
Depth to bedrock (cm)22.567
Percent soil passing sieve No. 200 (fine)21.178
Elevation coefficient of variation18.939
Organic matter content (% by weight)18.8710
Total available water capacity (cm, to 152 cm)18.4211
Cropland (%)18.1712
Average elevation (m)18.1313
Potential soil productivity (m3 of timber/ha)18.0614
Mean May-September precipitation (mm)17.6915
Percent soil passing sieve No. 10 (coarse)17.416
Ultisol (%)16.1117
Soil erodibility factor, rock fragment free15.5518
Annual precipitation (mm)15.4119
Mean difference between July and January Temperature (°C)15.2120
Soil slope (%) of a soil component15.0821
Soil pH14.8222
Mean January temperature (°C)14.2523
Maximum elevation (m)1424
Spodosol (%)13.625
Mean annual temperature (°C)13.4226
Mollisol (%)13.2627
Nonforest land (%)12.8128
Soil permeability rate (cm/hr)11.6129
Forest land (%)10.9730
Alfisol (%)9.4531
Histosol (%)9.432
Water (%)7.5533
Fragmentation Index (Riitters et al. 2002)7.4834
Entisol (%)7.3935
Soil bulk density (g/cm3)6.1736
Vertisol (%)037
Aridisol (%)038