Carbon sequestration and elevational gradient: The case of Yegof mountain natural vegetation in North East, Ethiopia, implications for sustainable management

Figures & data

Figure 1. Map of the study area

Figure 2. Weather condition of study area in the past 50 years. (RF – rainfall, Max. Temp – maximum Temperatures (^oC) and Rel. Hum – Relative humidity (%))

Figure 3. Diagram illustrating quadrat position in the study area (1 m × 1 m for herbaceous, little and soil sampling; 5 m × 5 m for shrub sampling; and 20 m × 20 m for tree sampling)

Table 1. Woody mean (±SD) above and below ground carbon stock of the three altitudinal gradients

Gradients	Carbon pools
	AGC (ton ha^−1)	BGC (ton ha^−1)	DWC (ton ha^−1)	GHL (ton ha^−1)
LA	84.7 ± 9.2^b	16.9 ± 1.8^b	0.000	0.948 ± 0.08
MA	182.5 ± 23.5^a	36.5 ± 4.7^a	0.738 ± 0.5	0.985 ± 0.03
UA	187.3 ± 27^a	37.5 ± 5.4^a	0.369 ± 0.22	1.131 ± 0.073
P	<0.001	<0.001	0.297 (>0.05)	0.14 (P > 0.05)

AGC = above-ground carbon, BGC = below-ground carbon, DWC = dead wood carbon, GHL = grass, herb and letter carbon

Figure 4. Herb and litter mean carbon stock distribution in Yegof mountain (HC = herbaceous plant carbon, LC = little carbon, LGH = little and herb carbon and CO₂ = carbon dioxide equivalent GHL) (ton ha⁻¹)

Table 2. Means (±SD) of soil bulk density, %carbon and SOC across altitudinal gradients

Soil parameter	Altitudinal class				P
	LA	MA	UA	Total
BD (g.cm^−3)	1.05 ± 0.11	0.82 ± 0.1	0.79 ± 0.17	0.89 ± 0.17	0.101
%C	2.74 ± 0.34	2.66 ± 0.17	2.71 ± 0.66	2.7 ± 0.39	0.976
SOC (ton ha^−1)	266.07 ± 51.61^a	194.55 ± 26.07^b	187.92 ± 17.92^b	216.18 ± 49.51	<0.001

BD = bulk density, SOC = soil organic carbon

Figure 5. Total carbon stock distribution in Yegof mountain