Predictor Importance Values for turkey oak (Quercus laevis)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	7.38	39
Mean May-September precipitation (mm)	8.96	34
Mean annual temperature (°C)	9.09	31
Mean May-September temperature (°C)	12.5	11
Mean temperature of coldest month (°C)	9.12	30
Mean temperature of warmest month (°C)	9.83	26
Annual aridity index	12.15	16
Minimum elevation	9.85	25
Maximum elevation	13.04	9
Average elevation	10.32	22
Median elevation	11.44	18
Range of elevation	16.9	2
Elevation coefficient ofvariation	13.22	8
Elevation standard deviation	17.04	1
Annual daylength coefficient of variation	9.87	24
Total available water capacity (cm, to 150 cm)	9.07	32
Total available water supply (cm, to 150 cm)	9.19	29
Depth to water table (cm)	13.56	6
Soil permeability rate (cm/hr)	9.65	27
Soil calcium carbonate (% by weight)	10.55	21
Soil cation-exchange capacity	7.88	37
Soil pH	9.52	28
Soil bulk density (g/cm3)	10.75	20
Organic matter content (% by weight)	12.06	17
Potential soil productivity	12.99	10
Soil erodibility factor, rock fragment free	12.42	12
Soil erosion by wind (tons/acre/year)	14.53	4
Percent soil passing sieve No. 10 (coarse)	12.22	15
Percent soil passing sieve No. 200 (fine)	13.45	7
Percent clay (< 0.002 mm size)	9	33
Percent sand (< 0.002 mm size)	12.4	13
Percent silt (< 0.002 mm size)	12.23	14
Percent of texture clayey	8.29	36
Percent of texture loamy	2.22	42
Percent of texture sandy	1.52	43
Percent of texture other	9.89	23
Alfisol (%)	7.77	38
Aridisol (%)	0	44
Entisol (%)	-2.56	45
Histosol (%)	8.54	35
Inceptisol (%)	14.53	5
Mollisol (%)	5.83	40
Spodosol (%)	11.4	19
Ultisol (%)	15.47	3
Vertisol (%)	2.78	41