Soil organic carbon variation in relation to land use changes: the case of Birr watershed, upper Blue Nile River Basin, Ethiopia

Table 2 Summary of two-way ANOVA results for the soil physical properties in relation to land use and soil depths (0–20 cm)

Source of variation	D.F	Sand		Silt		Clay		Moisture content		Bulk density
Source of variation	D.F	MS	p	MS	p	MS	p	MS	p	MS	p
LU	3	917.597	0.0223	73.153	0.3999	597	0.0447	59.288	0.0632	0.124	< 0.0001
Depth	1	1.5	0.9924	75.042	0.3662	95.042	0.5749	408.126	< 0.0001	0.044	0.0202
LU*depth	3	37.222	0.9743	13.653	0.9707	14.542	0.9963	12.259	0.6738	0.009	0.3603
Mean		51.6		23.7		24.7		18.38		0.926
R-square		0.557		0.354		0.513		0.149		0.281
Error	148	197.542		68.625		163.917		23.889		0.0081

ISSN: 2288-1220