Predictor Importance Values for eastern white pine (Pinus strobus)

Predictor Name Importance Score Rank
Annual precipitation (mm)21.8829
Mean May-September precipitation (mm)31.43
Mean annual temperature (°C)21.9428
Mean May-September temperature (°C)22.1926
Mean temperature of coldest month (°C)18.8235
Mean temperature of warmest month (°C)28.678
Annual aridity index28.787
Minimum elevation28.946
Maximum elevation21.7130
Average elevation26.1118
Median elevation25.9819
Range of elevation21.4231
Elevation coefficient ofvariation26.3715
Elevation standard deviation23.7622
Annual daylength coefficient of variation20.1434
Total available water capacity (cm, to 150 cm)26.6914
Total available water supply (cm, to 150 cm)26.3516
Depth to water table (cm)32.032
Soil permeability rate (cm/hr)30.565
Soil calcium carbonate (% by weight)22.1827
Soil cation-exchange capacity27.8610
Soil pH24.7121
Soil bulk density (g/cm3)26.9713
Organic matter content (% by weight)20.1733
Potential soil productivity34.511
Soil erodibility factor, rock fragment free26.1417
Soil erosion by wind (tons/acre/year)27.5611
Percent soil passing sieve No. 10 (coarse)30.694
Percent soil passing sieve No. 200 (fine)27.2412
Percent clay (< 0.002 mm size)23.1924
Percent sand (< 0.002 mm size)25.7620
Percent silt (< 0.002 mm size)28.69
Percent of texture clayey18.6636
Percent of texture loamy18.2837
Percent of texture sandy20.2932
Percent of texture other17.8138
Alfisol (%)23.0125
Aridisol (%)1.3645
Entisol (%)10.143
Histosol (%)15.6340
Inceptisol (%)23.5423
Mollisol (%)17.639
Spodosol (%)12.3242
Ultisol (%)13.8641
Vertisol (%)3.6644