Table 4 The eigenvalues and principal components of soil variables along with variances in percentage
From: Soil properties changes earthworm diversity indices in different agro-ecosystem
Variables | PC1 | PC2 | PC3 | PC4 |
|---|---|---|---|---|
Sand | 0.127 | 0.933 | – 0.006 | 0.118 |
Silt | – 0.047 | 0.954 | – 0.076 | – 0.105 |
Clay | – 0.167 | – 0.898 | 0.169 | – 0.031 |
Moisture | 0.085 | 0.174 | – 0.705 | – 0.187 |
pH | 0.748 | 0.113 | – 0.010 | – 0.272 |
EC | 0.943 | – 0.167 | – 0.005 | – 0.036 |
TDS | 0.944 | – 0.165 | – 0.010 | – 0.043 |
OC | – 0.009 | – 0.039 | 0.962 | 0.137 |
Ca | 0.164 | 0.345 | – 0.267 | 0.614 |
Na | – 0.097 | – 0.193 | – 0.029 | 0.802 |
K | 0.735 | 0.295 | – 0.022 | 0.248 |
P | 0.282 | 0.069 | 0.274 | 0.660 |
N | 0.147 | – 0.247 | – 0.177 | 0.768 |
Earthworms abundance | – 0.378 | 0.427 | 0.390 | – 0.149 |
Eigenvalue | 3.215 | 2.712 | 1.992 | 1.414 |
Variance (%) | 22.96 | 19.37 | 14.23 | 10.10 |
Cumulative variance (%) | 22.96 | 42.33 | 56.57 | 66.67 |