Woody Species Composition, Structure, and Carbon Stock of Coffee-Based Agroforestry System along an Elevation Gradient in the Moist Mid-Highlands of Southern Ethiopia

Table 5

Mean value of woody species AGB (Mg ha⁻¹), BGB (Mg ha⁻¹), soil bulk density (g cm⁻³), and SOC % along an elevation gradient of coffee-based agroforestry system.

Elevation gradient (m a.s.l)	Shade trees AGB	Coffee shrub AGB	Total AGB	BGB	Bulk density	SOC
1840	18.39 ± 3.85^ab	16.16 ± 3.76	34.55 ± 4.58^ab	8.64 ± 1.15^ab	0.80 ± 0.02b^c	3.58 ± 0.17^ab
1940	17.42 ± 5.50^ab	14.39 ± 2.87	31.81 ± 4.92^b	7.95 ± 1.23^b	0.89 ± 0.02^a	3.26 ± 0.20^ab
2040	22.99 ± 4.66^ab	15.13 ± 3.30	38.12 ± 6.85a^b	9.53 ± 1.71a^b	0.92 ± 0.01^a	3.05 ± 0.21^b
2140	14.10 ± 4.18^b	8.05 ± 2.89	22.14 ± 4.27^b	5.54 ± 1.07^b	0.75 ± 0.02^c	3.72 ± 0.16^a
2240	34.24 ± 4.22^a	20.72 ± 4.15	54.96 ± 6.17^a	13.74 ± 1.54^a	0.84 ± 0.03^ab	3.53 ± 0.22^ab
-value	0.03	0.16	<0.00	<0.00	<0.00	0.02