The Scientific World Journal

Research Article

Degradation Rate/Vulnerability Potential and Fertility Status of Luvisols in the Mandara Mountains (Far-North Cameroon)

Table 2

Physicochemical characteristics and summary statistics of the soil profile.


Depth (cm)	0–25	25–50	50–75	75–100	100–125	Min	Max	Mean	SD	CV

Sand	74.70	69.70	59.70	72.70	79.70	59.70	79.70	71.30	7.44	0.1
Silt	17.40	16.40	21.40	15.40	12.40	12.40	21.40	16.60	3.27	0.2
Clay	7.90	13.90	18.90	11.90	7.90	7.90	18.90	12.10	4.60	0.38
pH_H2O	6.60	6.00	6.50	6.70	7.20	6.00	7.20	6.60	0.43	0.07
pH_KCl	4.70	4.00	4.10	4.20	4.20	4.00	4.70	4.24	0.27	0.06
OC (%)	1.90	0.17	0.52	1.11	1.60	0.17	1.90	1.06	0.72	0.68
OM (%)	3.27	0.30	0.89	1.91	2.76	0.30	3.27	1.83	1.24	0.68
N (%)	0.04	0.01	0.03	0.03	0.02	0.01	0.04	0.03	0.01	0.41
C/N	45.13	14.48	18.46	44.31	65.31	14.48	65.31	37.54	21.04	0.56
Ca (cmol·kg⁻¹)	7.68	8.48	9.28	10.96	7.60	7.60	10.96	8.80	1.39	0.16
Mg (cmol·kg⁻¹)	2.48	4.88	5.12	4.72	6.32	2.48	6.32	4.70	1.39	0.3
K (cmol·kg⁻¹)	6.04	1.56	0.91	1.01	0.41	0.41	6.04	1.98	2.30	1.16
Na (cmol·kg⁻¹)	1.27	0.97	0.77	0.87	0.57	0.57	1.27	0.89	0.26	0.29
SBE (cmol·kg⁻¹)	17.47	15.89	16.08	17.56	14.90	14.90	17.56	16.38	1.13	0.07
CEC (cmol.kg⁻¹)	38.24	42.88	52.48	24.80	20.32	20.32	52.48	35.74	13.18	0.37
P (mg/kg)	12.50	8.71	4.92	3.92	4.42	3.92	12.50	6.89	3.66	0.53
V (%)	45.67	37.04	30.64	70.79	73.31	30.64	73.31	51.49	19.53	0.38
ISS (%)	12.92	0.98	2.21	7.00	13.59	0.98	13.59	7.34	5.85	0.8
Gravel (%)	15.00	7.00	25.00	25.00	25.00	7.00	25.00	19.40	8.17	0.42

Min: minimum; Max: maximum; SD: standard deviation; CV: coefficient of variation; SBE: sum of exchangeable bases; ISS: soil aggregate stability index.