Characteristics of Nitisol profiles as affected by land use type and slope class in some Ethiopian highlands

Environmental Systems Research

Table 8 Selected chemical characteristics of Nitisol profiles by land use type and slope

Horizon	Depth (cm)	PH H₂O	OC (%)	TN (%)	C/N	CEC and exchangeable bases (cmol(+) kg⁻¹)
Horizon	Depth (cm)	PH H₂O	OC (%)	TN (%)	C/N	CEC	Ca	Mg	Na	K	TEB	PBS
Profile 1: Intensive cereal upper slope (ET_ASAA-P002)
Ap	0–20	4.8	2.1	0.16	13	44	15	4	0.1	1.4	20	43
AB	20–40	5.1	1.7	0.10	17	32	14	3	0.1	1.2	18	53
Bt1	40–80	5.5	1.0	0.05	20	30	13	2	0.1	1.3	16	50
Bt2	80–200	5.7	1.0	0.06	17	30	14	4	0.2	1.2	19	60
Profile 2: Intensive cereal lower slope (ET_AJJI-P001)
Ap	0–20	4.7	3.6	0.20	18	42	15	7	0.4	1.2	22	52
AB	20–42	4.9	2.0	0.12	17	49	20	7	0.4	1.1	27	55
Bt1	42–90	4.5	1.1	0.06	18	48	20	6	0.5	1.4	26	54
Bt2	90–200	4.9	1.1	0.07	15	45	17	5	0.4	1.3	22	49
Profile 3: Agroforestry upper slope (ET_JIMLS-SP2)
Ah	0–12	6.2	2.5	0.25	10	37	13	14	0.2	2.2	29	78
BA	12–30	5.5	1.3	0.12	11	41	18	10	0.6	2.0	29	70
Bt1	30–90	5.5	0.9	0.09	10	35	14	10	0.9	2.0	25	71
Bt2	90–145	5.3	0.6	0.06	10	32	14	8	0.2	2.1	23	72
Bt3	145–200	5.8	0.4	0.04	10	30	12	11	0.2	2.0	18	77
Profile 4: Agroforestry lower slope (ET_JIM-G-SLP2)
Ap	0–10	5.5	3.6	0.33	11	30	11	8	0.2	3.0	21	70
AB	10–30	5.9	1.9	0.13	14	28	13	8	0.1	2.0	22	79
Bt1	30–60	5.6	1.5	0.13	12	27	12	9	0.1	2.2	22	81
Bt2	60–105	5.6	1.1	0.10	11	30	12	10	0.1	2.4	23	77
Bt3	105–180	5.5	0.4	0.03	12	30	14	8	0.1	2.2	23	76