Table 3.
Load matrix and norm values of indicators.
| Principal component variable | Group | Norm value | Minimum data set | |||
|---|---|---|---|---|---|---|
| PC1 | PC2 | PC3 | ||||
| SWC | 0.12 | 0.48 | 0.17 | 3 | 0.65 | / |
| SSC | 0.23 | 0.53 | 0.21 | 1 | 0.79 | Enter |
| pH | 0.14 | 0.42 | 0.40 | 3 | 0.72 | / |
| SOC | 0.48 | −0.03 | −0.14 | 3 | 0.81 | Enter |
| SAP | 0.29 | −0.41 | 0.41 | 3 | 0.82 | Enter |
| STP | 0.27 | −0.38 | 0.51 | 2 | 0.85 | Enter |
| STN | 0.46 | 0.04 | −0.06 | 3 | 0.77 | / |
| SAN | 0.28 | 0.03 | −0.48 | 3 | 0.68 | / |
| SNN | 0.50 | −0.04 | −0.31 | 3 | 0.89 | Enter |
| Eigenvalues | 2.79 | 1.56 | 1.12 | / | / | / |
| Variance contribution (%) | 31.03 | 17.33 | 12.39 | / | / | / |
| Cumulative variance contribution (%) | 31.03 | 48.36 | 60.75 | / | / | / |
“/” means failure to enter the soil MDS or no related data.