International Scholarly Research Notices / 2013 / Article / Tab 2

Research Article

Variability of Soil Physical Properties in a Clay-Loam Soil and Its Implication on Soil Management Practices

Table 2

Variogram parameters for soil physical properties at four depths in a clay-loam soil.

Depth (cm)ModelNugget ( )Sill ( )Range ( ) ( )DSD (%)

GWC
 0–10Exponential0.000.006.420.120.940.01
 10–20Exponential0.000.0064.260.750.520.29
 20–40Spherical0.000.007.170.111.000.00
 40–60Exponential0.000.004.560.010.990.00
VWC
 0–10Exponential0.000.006.210.310.940.01
 10–20Exponential0.000.0011.820.440.890.04
 20–40Exponential0.000.005.880.170.970.00
 40–60Exponential0.000.000.450.001.000.00
BDY
 0–10Linear0.010.0125.770.070.001.18
 10–20Exponential0.020.0440.170.930.500.04
 20–40Spherical0.000.017.420.200.950.07
 40–60Linear0.000.0025.770.390.000.44
TPS
 0–10Linear0.000.0025.770.070.000.16
 10–20Exponential0.000.0114.640.790.810.13
 20–40Exponential0.000.007.500.210.900.03
 40–60Linear0.000.0025.770.470.000.07
VAC
 0–10Linear0.000.0025.770.250.000.48
 10–20Exponential0.000.002.730.000.860.06
 20–40Exponential0.010.007.620.350.920.07
 40–60Linear0.000.0025.770.210.000.23
WFPS
 0–10Linear107.28107.2825.770.150.0010727.60
 10–20Spherical10.80135.305.380.000.921173.91
 20–40Exponential3.5066.497.470.270.95369.59
 40–60Linear55.4955.4925.770.070.005549.30
AFPS
 0–10Linear107.28107.2825.770.150.0010727.6
 10–20Spherical10.80135.305.380.000.921173.91
 20–40Exponential3.5066.497.470.270.95369.588
 40–60Linear55.4955.4925.770.070.005549.30
DIFF
 0–10Linear0.000.0025.770.100.000.11
 10–20Exponential0.000.004.710.000.850.00
 20–40Exponential0.000.004.530.050.930.01
 40–60Linear0.000.0025.770.190.000.05
TORT
 0–10Linear2.122.1225.770.150.00211.80
 10–20Exponential17.80126.108.100.190.862072.20
 20–40Exponential0.181.7413.200.580.9019.44
 40–60Linear1.241.2425.770.160.00123.68

DSD: Degree of spatial dependence: strong DSD (DSD ≤ 25%), moderate DSD (25 < DSD ≤ 75%), weak DSD (DSD > 75%) according to Cambardella et al., (1994) [14].