Predictor Importance Values for scarlet oak (Quercus coccinea)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	29.58	2
Mean May-September precipitation (mm)	21.58	22
Mean annual temperature (°C)	26.61	7
Mean May-September temperature (°C)	22.85	18
Mean temperature of coldest month (°C)	26.66	6
Mean temperature of warmest month (°C)	24.63	14
Annual aridity index	26.72	5
Minimum elevation	20.93	24
Maximum elevation	21.78	20
Average elevation	17.91	32
Median elevation	18.9	30
Range of elevation	25	13
Elevation coefficient ofvariation	26.51	8
Elevation standard deviation	22.68	19
Annual daylength coefficient of variation	22.94	17
Total available water capacity (cm, to 150 cm)	29.21	3
Total available water supply (cm, to 150 cm)	25.16	12
Depth to water table (cm)	24.57	15
Soil permeability rate (cm/hr)	19.11	29
Soil calcium carbonate (% by weight)	19.61	27
Soil cation-exchange capacity	25.72	11
Soil pH	19.44	28
Soil bulk density (g/cm3)	30.61	1
Organic matter content (% by weight)	21.67	21
Potential soil productivity	11.64	39
Soil erodibility factor, rock fragment free	20.26	26
Soil erosion by wind (tons/acre/year)	26.93	4
Percent soil passing sieve No. 10 (coarse)	23.44	16
Percent soil passing sieve No. 200 (fine)	14.36	36
Percent clay (< 0.002 mm size)	15.14	35
Percent sand (< 0.002 mm size)	15.41	34
Percent silt (< 0.002 mm size)	14.13	37
Percent of texture clayey	16.18	33
Percent of texture loamy	10.57	41
Percent of texture sandy	20.4	25
Percent of texture other	25.89	9
Alfisol (%)	21.15	23
Aridisol (%)	1.1	45
Entisol (%)	6.96	44
Histosol (%)	9.88	43
Inceptisol (%)	11.56	40
Mollisol (%)	25.89	10
Spodosol (%)	12.15	38
Ultisol (%)	18.62	31
Vertisol (%)	10.37	42