Predictor Importance Values for water hickory (Carya aquatica)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	12.76	14
Mean May-September precipitation (mm)	13.47	9
Mean annual temperature (°C)	13.48	8
Mean May-September temperature (°C)	16.38	2
Mean temperature of coldest month (°C)	13.59	6
Mean temperature of warmest month (°C)	14.94	4
Annual aridity index	11.72	19
Minimum elevation	11.18	22
Maximum elevation	10.69	28
Average elevation	13.5	7
Median elevation	15.1	3
Range of elevation	10.94	24
Elevation coefficient ofvariation	13.32	10
Elevation standard deviation	11.03	23
Annual daylength coefficient of variation	14.09	5
Total available water capacity (cm, to 150 cm)	10.84	25
Total available water supply (cm, to 150 cm)	10.65	29
Depth to water table (cm)	10.3	33
Soil permeability rate (cm/hr)	9.19	38
Soil calcium carbonate (% by weight)	13.23	11
Soil cation-exchange capacity	10.7	27
Soil pH	13.2	12
Soil bulk density (g/cm3)	10.43	30
Organic matter content (% by weight)	10.37	32
Potential soil productivity	12.37	15
Soil erodibility factor, rock fragment free	13.12	13
Soil erosion by wind (tons/acre/year)	10.4	31
Percent soil passing sieve No. 10 (coarse)	8.79	39
Percent soil passing sieve No. 200 (fine)	10.17	34
Percent clay (< 0.002 mm size)	10.07	35
Percent sand (< 0.002 mm size)	9.57	37
Percent silt (< 0.002 mm size)	12.35	16
Percent of texture clayey	8.51	40
Percent of texture loamy	12.12	18
Percent of texture sandy	11.53	21
Percent of texture other	10.77	26
Alfisol (%)	7.26	41
Aridisol (%)	0	45
Entisol (%)	4.04	44
Histosol (%)	5.7	43
Inceptisol (%)	20.68	1
Mollisol (%)	10.03	36
Spodosol (%)	5.8	42
Ultisol (%)	11.62	20
Vertisol (%)	12.26	17