Predictor Importance Values for blackgum (Nyssa sylvatica)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	29.97	4
Mean May-September precipitation (mm)	14.95	40
Mean annual temperature (°C)	21.22	29
Mean May-September temperature (°C)	25.3	16
Mean temperature of coldest month (°C)	31.78	2
Mean temperature of warmest month (°C)	28.35	7
Annual aridity index	22.64	23
Minimum elevation	18.24	36
Maximum elevation	16.46	37
Average elevation	10.75	44
Median elevation	15.63	39
Range of elevation	27.15	10
Elevation coefficient ofvariation	19.8	31
Elevation standard deviation	30.55	3
Annual daylength coefficient of variation	26.96	11
Total available water capacity (cm, to 150 cm)	23.01	21
Total available water supply (cm, to 150 cm)	22.31	25
Depth to water table (cm)	35.45	1
Soil permeability rate (cm/hr)	22.67	22
Soil calcium carbonate (% by weight)	21.04	30
Soil cation-exchange capacity	27.91	8
Soil pH	26.04	13
Soil bulk density (g/cm3)	21.55	26
Organic matter content (% by weight)	22.52	24
Potential soil productivity	18.95	34
Soil erodibility factor, rock fragment free	23.37	19
Soil erosion by wind (tons/acre/year)	18.46	35
Percent soil passing sieve No. 10 (coarse)	21.24	28
Percent soil passing sieve No. 200 (fine)	25.61	15
Percent clay (< 0.002 mm size)	29.87	5
Percent sand (< 0.002 mm size)	26.54	12
Percent silt (< 0.002 mm size)	23.15	20
Percent of texture clayey	13.09	43
Percent of texture loamy	23.83	18
Percent of texture sandy	21.35	27
Percent of texture other	19.7	32
Alfisol (%)	26.04	14
Aridisol (%)	1	45
Entisol (%)	13.09	42
Histosol (%)	13.32	41
Inceptisol (%)	27.24	9
Mollisol (%)	24.78	17
Spodosol (%)	19.34	33
Ultisol (%)	29.75	6
Vertisol (%)	16.19	38