Spatial Variability of Soil Organic Carbon Stock in Gurje Subwatershed, Hadiya Zone, Southern Ethiopia

Table 5

The parameters of the semivariogram for the fitted models of the ordinary kriging (OK).

Variable	Depth (cm)	Model	C0	C	(C0 + C)	C0/(C0 + C)%	SD	Range (m)
SOC	0–20	Exp	0	0.245	0.245	0	S	381.37
	20–40	Cir	0	0.270	0.270	0	S	270.87
SOCS	0–20	Sph	0.034	0.182	0.216	15.86	S	275.89
	20–40	Exp	0	0.278	0.278	0	S	394.52

C0 = nugget; C = partial sill; sill = C0 + C; C0/(C0 + C)% = nugget/sill ratio; SD = spatial dependence; Exp = exponential model; Cir = circular model; Sph = spherical model; S = strong.