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Table 5 Exchangeable cations and cation exchange capacity and base saturation of soils at CSB

From: Characterizing soils and the enduring nature of land uses around the Lake Chamo Basin in South-West Ethiopia

Ped on Depth (cm) Na K Ca Mg Sum CEC PBS (%) Exch. bases
(cmol(+)/kg) Ca/Mg Mg/K Ca+Mg/K)
Kulfo Watershed = Upper Chamo Basin (UCB)
 P-1 0–34 1.03 0.45 26.78 9.94 38.21 38.97 98.03 2.70 22.09 80.40
34–200 1.40 0.11 22.90 8.21 32.61 36.63 89.05 2.79 74.64 282.82
 P-2 0–90 1.16 0.51 16.57 9.16 27.39 34.12 80.27 1.81 17.96 50.45
90–97   
97–200 1.78 0.41 22.88 13.64 38.71 39.70 97.51 1.68 33.27 89.07
 P-3 0–80 0.60 0.55 26.54 8.99 36.68 37.68 97.33 2.95 16.35 64.60
80–85   
85–200 0.71 0.41 22.68 10.27 34.07 38.15 89.31 2.21 25.05 80.37
Sille-Sego Watershed = Middle Chamo Basin (MCB)
 P-4 0–35 0.73 0.64 25.49 9.07 35.93 39.44 91.09 2.81 22.12 84.29
35–200 1.14 0.31 28.34 6.98 36.77 37.44 98.20 4.06 22.52 113.94
 P-5 0–40 1.12 0.49 20.54 9.84 32.00 35.36 90.50 2.09 20.08 61.92
40–200 1.04 0.46 27.90 6.10 35.51 36.49 97.32 4.57 5.87 32.69
 P-6 0–50 0.82 0.28 23.97 8.99 34.05 34.43 98.92 2.67 32.11 117.71
50–58   
58–200 0.85 0.20 25.06 6.91 33.02 35.69 92.52 3.63 8.13 37.61
Waseca-Doyso Watershed = Lower Chamo Basin (LCB)
 P-7 0–46 1.17 0.66 37.58 16.42 55.84 56.35 99.10 2.29 24.88 81.82
46–140 1.97 1.13 34.44 15.70 53.25 54.03 98.56 2.19 13.89 44.37
 P-8 0–30 0.89 1.19 32.83 8.64 43.55 44.61 97.63 3.80 7.26 34.85
30–120 1.05 0.20 33.38 1.28 35.92 37.68 95.31 3.26 6.40 123.79
120–200 1.04 0.25 19.32 4.62 25.23 28.30 89.15 4.18 18.48 95.76
 P-9 0–50 1.16 0.95 32.26 9.86 44.22 47.23 93.61 3.27 10.38 44.34
50–54   
54–200 1.05 0.20 28.94 8.64 38.84 39.91 97.30 3.35 43.20 187.90
Arguba-Wezeka Watershed = Toe Chamo Basin (TCB)
 P-10 0–30 1.27 0.60 21.83 8.99 32.69 35.36 92.47 2.43 14.98 51.37
30–80 1.00 0.29 23.76 9.68 34.74 37.30 93.12 2.45 33.38 115.31
80–200 0.85 0.64 23.54 6.98 32.01 33.65 95.13 3.38 10.91 47.69
 P-11 0–46 0.46 0.73 22.03 10.80 34.02 38.03 89.44 1.21 14.79 44.97
46–115 0.74 0.41 17.98 11.13 30.25 31.63 95.61 2.32 27.12 71.00
115–200 0.82 0.50 20.80 6.66 28.78 28.94 99.45 2.84 13.32 54.92
 P-12 0–17 0.77 0.59 12.53 7.34 21.23 33.34 63.68 2.31 12.44 33.68
17–70 1.38 1.05 17.71 12.10 32.24 33.34 96.71 4.14 11.52 28.39
70–200 1.98 0.22 18.58 11.23 32.01 35.22 90.90 5.63 51.05 135.68
  1. Note: It is difficult to indicate statistical difference as the depth of each profile sampled was different