Predictor Importance Values for winged elm (Ulmus alata)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	27.29	1
Mean May-September precipitation (mm)	22.23	7
Mean annual temperature (°C)	19.04	18
Mean May-September temperature (°C)	15.91	30
Mean temperature of coldest month (°C)	15.49	31
Mean temperature of warmest month (°C)	13.02	38
Annual aridity index	16.05	29
Minimum elevation	20.75	9
Maximum elevation	14.48	36
Average elevation	18.3	21
Median elevation	19.95	15
Range of elevation	19.76	16
Elevation coefficient ofvariation	15.38	32
Elevation standard deviation	21.94	8
Annual daylength coefficient of variation	19.2	17
Total available water capacity (cm, to 150 cm)	20.34	11
Total available water supply (cm, to 150 cm)	18.74	19
Depth to water table (cm)	16.24	28
Soil permeability rate (cm/hr)	22.38	4
Soil calcium carbonate (% by weight)	14.79	34
Soil cation-exchange capacity	16.3	27
Soil pH	19.97	14
Soil bulk density (g/cm3)	24.35	3
Organic matter content (% by weight)	25	2
Potential soil productivity	20.73	10
Soil erodibility factor, rock fragment free	22.37	5
Soil erosion by wind (tons/acre/year)	22.36	6
Percent soil passing sieve No. 10 (coarse)	20.23	13
Percent soil passing sieve No. 200 (fine)	17.11	25
Percent clay (< 0.002 mm size)	17.74	23
Percent sand (< 0.002 mm size)	13.61	37
Percent silt (< 0.002 mm size)	16.75	26
Percent of texture clayey	11.46	40
Percent of texture loamy	9.16	42
Percent of texture sandy	11.72	39
Percent of texture other	20.27	12
Alfisol (%)	18.45	20
Aridisol (%)	0.79	44
Entisol (%)	15.2	33
Histosol (%)	7.45	43
Inceptisol (%)	14.71	35
Mollisol (%)	17.52	24
Spodosol (%)	0.29	45
Ultisol (%)	18.1	22
Vertisol (%)	10.2	41