Table 3 Soil physicochemical properties and carbon stocks of O. abyssinica forests

Clay, silt and sand (%)

0–15

20:10:70

18:16:66

15–30

22:12:66

28:18:54

Soil _PH

0–15

5.99 \(\pm \,0.55\)

5.86 \(\pm \,0.80\)

15–30

5.84 \(\pm \,0.36\)

5.58 \(\pm \,0.35\)

SOC (%)

0–15

3.4 \(\pm \,0.19\)

5.3^a \(\pm \,0.17\)

15–30

2.4 \(\pm \,0.14\)

2.8^b \(\pm \,0.14\)

TN (%)

0–15

0.25 \(\pm \,0.01\)

0.38^a \(\pm \,0.12\)

15–30

0.18 \(\pm \,0.10\)

0.21^b \(\pm \,0.00\)

BD (g cm⁻³)

0–15

1.34^a \(\pm \,0.39\)

1.14^a \(\pm \,0.27\)

15–30

1.55^b \(\pm \,0.27\)

1.30^b \(\pm \,0.27\)

Moisture (%)

0–15

8.23 \(\pm \,0.56\)

9.69^a \(\pm \,0.31\)

15–30

9.60 \(\pm \,1.00\)

12.57^b \(\pm \,0.72\)

TN stock (Mg N ha⁻¹)

0–15

5.04 \(\pm \,0.17\)

6.49^a \(\pm \,0.22\)

15–30

4.36 \(\pm \,0.22\)

4.18^b \(\pm \,0.19\)

SOC stock (Mg C ha⁻¹)

0–15

67.40 \(\pm \,2.60\)

90.25^a \(\pm \,3.62\)

15–30

56.07 \(\pm \,3.32\)

54.08^b \(\pm \,2.66\)