Predictor Importance Values for mountain maple (Acer spicatum)

Predictor Name Importance Score Rank
Annual precipitation (mm)12.429
Mean May-September precipitation (mm)11.3513
Mean annual temperature (°C)10.4724
Mean May-September temperature (°C)12.1710
Mean temperature of coldest month (°C)11.0419
Mean temperature of warmest month (°C)14.043
Annual aridity index9.729
Minimum elevation9.6930
Maximum elevation9.8128
Average elevation7.8938
Median elevation10.6123
Range of elevation11.1815
Elevation coefficient ofvariation15.182
Elevation standard deviation9.4831
Annual daylength coefficient of variation13.574
Total available water capacity (cm, to 150 cm)10.8921
Total available water supply (cm, to 150 cm)12.537
Depth to water table (cm)12.936
Soil permeability rate (cm/hr)8.4835
Soil calcium carbonate (% by weight)10.9120
Soil cation-exchange capacity11.0418
Soil pH12.995
Soil bulk density (g/cm3)11.6712
Organic matter content (% by weight)11.1216
Potential soil productivity15.511
Soil erodibility factor, rock fragment free12.488
Soil erosion by wind (tons/acre/year)9.8627
Percent soil passing sieve No. 10 (coarse)11.7811
Percent soil passing sieve No. 200 (fine)7.7439
Percent clay (< 0.002 mm size)8.4934
Percent sand (< 0.002 mm size)7.1740
Percent silt (< 0.002 mm size)8.7433
Percent of texture clayey9.9426
Percent of texture loamy9.1232
Percent of texture sandy10.1625
Percent of texture other7.9537
Alfisol (%)11.2114
Aridisol (%)145
Entisol (%)11.117
Histosol (%)444
Inceptisol (%)10.7222
Mollisol (%)8.1436
Spodosol (%)6.7241
Ultisol (%)4.0643
Vertisol (%)5.1442