Effects of Soil and Water Conservation Measures on Soil Quality Indicators: The Case of Geshy Subcatchment, Gojeb River Catchment, Ethiopia
Table 7
Pearson’s correlation coefficient between soil quality indicators of SWC measures in Geshy subcatchment.
Soil quality indicators
Sand (%)
Silt (%)
Clay (%)
SWC, %
TP, %
pH-H2O
SOC (%)
TN (%)
C : N ratio
Sand
r
0.02
1
P
0.88
Silt
r
−0.18
0.37
1
P
0.20
0.006
Clay
r
0.15
−0.64
−0.94
1
P
0.27
0.000
0.000
SWC
r
−0.08
−0.15
−0.125
0.14
1
P
0.58
0.289
0.368
0.31
TP
r
−1.00
−0.01
0.186
−0.16
0.07
1
P
0.000
0.92
0.179
0.24
0.60
pH
r
−0.01
−0.51
0.067
0.12
0.03
0.00
1
P
0.95
0.000
0.632
0.44
0.82
0.98
SOC
r
−0.04
0.124
−0.40
0.27
0.26
0.04
0.033
1
P
0.78
0.372
0.003
0.05
0.06
0.79
0.812
TN
r
−0.15
0.084
−0.249
0.16
0.20
0.15
0.160
0.74
1
P
0.27
0.546
0.070
0.25
0.15
0.27
0.249
0.000
C : N ratio
r
0.14
0.046
−0.236
0.17
0.05
−0.14
−0.192
0.37
−0.34
1
P
0.33
0.741
0.086
0.21
0.71
0.33
0.165
0.006
0.012
AP
r
−0.13
−0.071
−0.044
0.08
−0.17
0.13
−0.115
−0.249
0.012
−0.35
P
0.37
0.610
0.750
0.58
0.224
0.37
0.406
0.070
0.930
0.009
, soil bulk density; VSWC, volumetric soil water content; TP, total porosity; SOC, soil organic carbon; TN, total nitrogen; C : N ratio, carbon-to-nitrogen ratio; Av. P, available phosphorus. Correlation is significant at the 0.01 level (2-tailed). Correlation is significant at the 0.05 level (2-tailed). Values are Pearson correlation coefficient (r) n = 54.
