Predictor Importance Values for post oak (Quercus stellata)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	24.71	22
Mean May-September precipitation (mm)	29.73	8
Mean annual temperature (°C)	22.22	29
Mean May-September temperature (°C)	23.15	25
Mean temperature of coldest month (°C)	22.57	28
Mean temperature of warmest month (°C)	30.07	7
Annual aridity index	22.61	27
Minimum elevation	20.39	34
Maximum elevation	15.84	40
Average elevation	22.17	31
Median elevation	19.3	37
Range of elevation	25.01	20
Elevation coefficient ofvariation	28.88	9
Elevation standard deviation	26.14	17
Annual daylength coefficient of variation	22.2	30
Total available water capacity (cm, to 150 cm)	28.41	12
Total available water supply (cm, to 150 cm)	30.29	5
Depth to water table (cm)	27.6	14
Soil permeability rate (cm/hr)	24.51	23
Soil calcium carbonate (% by weight)	22.65	26
Soil cation-exchange capacity	20.12	36
Soil pH	28.46	11
Soil bulk density (g/cm3)	39.9	1
Organic matter content (% by weight)	24.82	21
Potential soil productivity	24.02	24
Soil erodibility factor, rock fragment free	26.02	19
Soil erosion by wind (tons/acre/year)	31.1	4
Percent soil passing sieve No. 10 (coarse)	30.25	6
Percent soil passing sieve No. 200 (fine)	28.59	10
Percent clay (< 0.002 mm size)	20.14	35
Percent sand (< 0.002 mm size)	18.9	38
Percent silt (< 0.002 mm size)	26.06	18
Percent of texture clayey	18.52	39
Percent of texture loamy	27.36	15
Percent of texture sandy	27.21	16
Percent of texture other	27.99	13
Alfisol (%)	33.43	3
Aridisol (%)	2.55	45
Entisol (%)	9.88	42
Histosol (%)	7.94	44
Inceptisol (%)	34.59	2
Mollisol (%)	21.13	33
Spodosol (%)	10.99	41
Ultisol (%)	21.37	32
Vertisol (%)	8.93	43