Predictor Importance Values for tamarack (native) (Larix laricina)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	9.37	38
Mean May-September precipitation (mm)	15.27	15
Mean annual temperature (°C)	12.95	26
Mean May-September temperature (°C)	15.16	16
Mean temperature of coldest month (°C)	16.51	9
Mean temperature of warmest month (°C)	15.14	17
Annual aridity index	14.4	18
Minimum elevation	6.38	43
Maximum elevation	8.12	41
Average elevation	13.46	22
Median elevation	13.75	20
Range of elevation	9.73	36
Elevation coefficient ofvariation	11.18	30
Elevation standard deviation	18.28	4
Annual daylength coefficient of variation	13.1	25
Total available water capacity (cm, to 150 cm)	15.92	11
Total available water supply (cm, to 150 cm)	18.07	5
Depth to water table (cm)	10.5	33
Soil permeability rate (cm/hr)	9.53	37
Soil calcium carbonate (% by weight)	12.44	27
Soil cation-exchange capacity	13.39	23
Soil pH	10.15	34
Soil bulk density (g/cm3)	15.41	14
Organic matter content (% by weight)	21.83	1
Potential soil productivity	17.51	7
Soil erodibility factor, rock fragment free	16.53	8
Soil erosion by wind (tons/acre/year)	10.15	35
Percent soil passing sieve No. 10 (coarse)	13.51	21
Percent soil passing sieve No. 200 (fine)	11.12	31
Percent clay (< 0.002 mm size)	11.64	29
Percent sand (< 0.002 mm size)	10.6	32
Percent silt (< 0.002 mm size)	20.51	2
Percent of texture clayey	11.69	28
Percent of texture loamy	17.71	6
Percent of texture sandy	13.24	24
Percent of texture other	15.55	12
Alfisol (%)	15.94	10
Aridisol (%)	1	45
Entisol (%)	8.37	40
Histosol (%)	20.19	3
Inceptisol (%)	15.44	13
Mollisol (%)	14.02	19
Spodosol (%)	7.95	42
Ultisol (%)	2.45	44
Vertisol (%)	8.79	39