Woody Species Diversity and Structure of Protected Woodlands Adjacent to Free Grazing Land Woodland at Dugda Woreda, Oromia, Ethiopia

Table 3

Stand structure of protected and free grazed woodland (mean ± SE).

Stand characters	Free grazed woodland	Protected woodland	Overall mean	value
Mean dbh (cm)	53.2 ± 7^a	67.3 ± 9^b	60.25 ± 8	0.036
Mean diameter branch	0.15 ± 2^a	0.28.1 ± 3^a	0.43 ± 1.5	0.23
Mean height (m)	6.7 ± 2^a	8.2 ± 1^a	7.45 ± 1.5	0.41
Mean crown ratio	33.2 ± 4.1^b	42.63 ± 4.02^b	37.9 ± 4.02	0.003
Mean crown diameter	5.4 ± 1^a	6.7 ± 2^b	6.02 ± 1.5	0.001
Density ha^−1	317.24 ± 52.6^a	346.53 ± 57.3^b	331.9 ± 54.95	0.002
Basal area (m^2 ha^−1)	3.1 ± 1^a	4.2 ± 2^b	3.45 ± 1.5	0.0024
Volume (m^3 ha^−1)	235.17 ± 12.3^a	355.06 ± 23.6^b	295.12 ± 17.95	0.01
Canopy cover	6.4 ± 1^a	7.3 ± 2^b	6.85 ± 1.5	0.0006

Different superscript small letters indicate there is significant variation among the two woodland categories (F test,  < 0.05) with stand structure between woodlands.