Table 1: Mean and range of site index, soil, and topographic variables by species for stands sampled in the Southern Appalachian Mountains of North Carolina, USA.
Model
Red oak ()
Yellow-poplar (
variables
Mean
Range
Mean
Range
Site index (m)
25.5
18–30
32
25–38
A-horizon thickness (cm)
8–36
8–41
Solum thickness (cm)
36–152
43–140
Elevation (m)
442–1329
646–1165
Aspect (deg)
45–330
10–355
Gradient (percent)
10–60
2–38
Landform index
0.01–0.27
0.08–0.38
a
Indicates no significant difference () between the two species.
bIndicates significant difference () between the two species.