Short-Term Effects of Land Leveling on Irrigation-Related Some Soil Properties in a Clay Loam Soil
Table 3
Summary of geostatistical parameters for surface soil (0–20 cm) properties measured before and after land leveling.
Soil parameter
Preleveling
Postleveling
Model
Nugget ()†
Sill ( + )†
Range (m)
/( + )
Model
Nugget ()
Sill ( + )
Range (m)
/( + )
BD (g cm−3)
Gaussian
0.0092
0.0262
58.5
0.651
0.98
Linear
0.0085
0.0085
74.6
0.000
0.46
Sand (%)
Gaussian
38.90
98.95
183.4
0.607
0.94
Linear
31.03
40.12
74.6
0.227
0.46
Silt (%)
Linear
25.45
32.03
74.6
0.206
0.42
Linear
8.36
10.72
74.6
0.220
0.30
Clay (%)
Spherical
3.44
30.23
83.0
0.886
0.99
Spherical
0.20
14.13
28.0
0.986
0.39
pH
Linear
0.004
0.004
74.6
0.000
0.00
Spherical
0.00
0.0077
23.3
0.999
0.02
EC (dS m−1)
Spherical
0.0005
0.0014
69.4
0.609
0.84
Linear
0.00
0.0016
20.0
0.000
0.06
FC (%wt)
Gaussian
1.66
5.015
73.3
0.668
0.99
Gaussian
0.01
8.35
35.2
0.999
0.87
PWP (%wt)
Spherical
0.01
8.09
80.2
0.999
0.99
Spherical
0.01
3.54
31.5
0.997
0.56
WHC (mm)
Gaussian
8.86
36.15
158.7
0.755
0.93
Gaussian
10.7
68.78
98.0
0.844
0.99
†: represents the inherent nonspatially related variability in the data, and represents the variability explained by any spatial component in the data.
