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Table 3 Mean (± standard error; n = 15) biomass (Mg ha−1), biomass carbon, soil carbon (SOC), and total carbon (total biomass plus SOC 0–60 cm) carbon stocks (Mg C ha−1) for each of the five altitudinal gradient class and results of one-way ANOVA (at α = 0.05, significant differences between altitudinal gradient for any of the C stocks were indicated)

From: Carbon stock potential of scattered trees on farmland along an altitudinal gradient in Tigray, Northern Ethiopia

Biomass and carbon pools

Altitude (m a.s.l)

2500–3000

2000–2500

1500–2000

1000–1500

500–1000

Mean

Pr (> F)

AGBa

35.93 (7.9)a

7.77 (1.7)b

17.65 (3.4)ab

8.53 (1.2)b

9.10 (0.9)b

15.80

***

BGBb

13.07 (2.7)a

3.19 (0.6)b

6.79 (1.2)ab

3.51 (0.4)b

3.75 (0.3)b

6.06

***

AGC

17.97 (3.9)a

3.89 (0.8)b

8.82 (1.7)ab

4.26 (0.6)b

4.55 (0.5)b

7.90

***

BGC

6.53 (1.08)a

1.59 (0.23)b

3.39 (0.46)ab

1.76 (0.16)b

1.87 (0.12)b

3.03

***

SOCc 0–60 cm

23.09(1.82)a

21.53(1.72)a

22.55(2.40)a

10.91(0.85)b

22.28(0.83)a

20.07

***

Total carbon

47.59 (4.77)a

27.01(2.49)bc

34.76(3.75)b

16.93(1.16)c

28.71(1.83)bc

31.00

***

  1. aTrees and shrubs
  2. bStumps, coarse roots, and fine root
  3. cDead and decay organic matter