Predictor Importance Values for eastern hemlock (Tsuga canadensis)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	26.94	2
Mean May-September precipitation (mm)	21.85	15
Mean annual temperature (°C)	19.09	23
Mean May-September temperature (°C)	21.68	17
Mean temperature of coldest month (°C)	18.81	24
Mean temperature of warmest month (°C)	21.66	18
Annual aridity index	23.6	11
Minimum elevation	25	7
Maximum elevation	24.49	9
Average elevation	23.8	10
Median elevation	22.18	13
Range of elevation	26.88	3
Elevation coefficient ofvariation	26.85	4
Elevation standard deviation	22.96	12
Annual daylength coefficient of variation	19.13	22
Total available water capacity (cm, to 150 cm)	20.92	20
Total available water supply (cm, to 150 cm)	21.77	16
Depth to water table (cm)	26.33	5
Soil permeability rate (cm/hr)	17.73	29
Soil calcium carbonate (% by weight)	15.75	33
Soil cation-exchange capacity	19.77	21
Soil pH	18.07	27
Soil bulk density (g/cm3)	25.99	6
Organic matter content (% by weight)	17.5	30
Potential soil productivity	22.15	14
Soil erodibility factor, rock fragment free	15.4	35
Soil erosion by wind (tons/acre/year)	24.92	8
Percent soil passing sieve No. 10 (coarse)	27.26	1
Percent soil passing sieve No. 200 (fine)	14.89	38
Percent clay (< 0.002 mm size)	15.07	37
Percent sand (< 0.002 mm size)	15.63	34
Percent silt (< 0.002 mm size)	17.13	31
Percent of texture clayey	7.94	42
Percent of texture loamy	17	32
Percent of texture sandy	18.12	26
Percent of texture other	17.96	28
Alfisol (%)	15.09	36
Aridisol (%)	1.43	45
Entisol (%)	10.43	41
Histosol (%)	21.4	19
Inceptisol (%)	14.3	39
Mollisol (%)	18.17	25
Spodosol (%)	14.19	40
Ultisol (%)	7.9	43
Vertisol (%)	2.28	44