Influence of Elevation and Anthropogenic Disturbance on Woody Species Composition, Diversity, and Stand Structure in Harego Mountain Forest, Northeastern Ethiopia

Table 6

Environmental variables (mean ± SE) of the three elevational gradients located in Harego Mountain Forest.

Environmental variable	Lower (24)	Middle (33)	Upper (10)	Overall (67)	F
Slope (%)	52.71 ± 4.08^b	40.06 ± 3.01^a	47.50 ± 4.17^b	45.70 ± 2.26	3.554	0.034
Aspect	1.96 ± 0.26^a	1.76 ± 0.19^a	2.10 ± 0.28^a	1.88 ± 0.14	0.440	0.646
Soil depth (m)	56.04 ± 11.22^b	62.27 ± 9.50^b	43.00 ± 10.86^a	57.16 ± 6.35	5.290	0.012
ALD (cm)	0.42 ± 0.13^a	1.52 ± 0.16^c	0.8 ± 0.25^b	1.01 ± 0.12	12.682	<0.001
Moisture content	81.74 ± 620.76^b	149.91 ± 31.70^c	59.21 ± 20.35^a	111.95 ± 18.00	4.987	0.010

ALD = average litter depth (accumulation).