Table 9.6 Principal component loading matrix of water
quality parameters
Water quality parameters
Component
1
2
pH
À0.996
À0.089
BOD, mg/l
0.955
0.298
COD, mg/l
0.945
0.326
Turbidity, NTU
0.996
0.089
Total hardness (as CaCO 3 ), mg/l
À0.089
0.996
Alkalinity (CaCO 3 ), mg/l
0.996
0.089
Ammoniacal nitrogen (as N), mg/l
0.971
0.241
Phenolphthalein acidity (CaCO 3 ), mg/l
0.912
0.410
Total suspended solids, mg/l
0.694
0.720
Conductivity (μmhos/cm)
0.755
0.656
Dissolved oxygen (as O 2 ), mg/l
À0.998
À0.025
Eigen value
8.614
2.386
Total factor covariance (%)
78.310
21.690
Cumulative % of total factor covariance
78.310
100
Table 9.7 Principal component loading matrix of soil
quality parameters
Soil quality parameters
Component
1
2
pH
0.904
À0.427
Electrical conductivity
0.398
À0.917
Moisture content
0.999
À0.021
Water-soluble aggregates
0.219
À0.976
Water-holding capacity
0.999
À0.017
Bulk density
À0.691
À0.723
Soil texture
À0.070
À0.998
Sand
0.978
0.208
Silt
À0.253
0.968
Clay
À0.983
0.186
Carbon:nitrogen ratio (C:N)
0.158
0.987
Total carbon (C)
0.733
0.680
Soil organic carbon
0.764
0.645
Total nitrogen (N)
0.907
0.420
Mineral nitrogen
0.805
À0.593
Total potassium (K)
0.984
0.177
Total phosphorus (P)
0.590
0.807
Total sodium (Na)
À0.468
0.884
Sodium absorption ratio
0.959
À0.282
Total calcium (Ca)
0.589
0.808
Na 2 O
0.805
À0.593
K 2 O
0.984
0.177
P 2 O 5
À0.983
0.185
Al 2 O 3
À0.054
À0.999
SiO 2
0.904
À0.427
Eigen value
13.499
10.501
Total factor covariance (%)
56.246
43.754
Cumulative % of total factor covariance
56.246
95.56
9 Assessment of Stream Flow Impact on Physicochemical Properties of Water and. . .
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