Table A3.
Eigenvalues and correlation coefficient matrix of principal components of state indicators in 2005 and 2015.
| 2005 | 2015 | |||||
|---|---|---|---|---|---|---|
| PC1 | PC2 | PC3 | PC1 | PC2 | PC3 | |
| Eigenvalue (λ) | 0.06 | 0.02 | 0.02 | 0.06 | 0.04 | 0.01 |
| Contribution rate (%) | 54.40 | 18.04 | 14.50 | 43.73 | 28.79 | 14.38 |
| Cumulative contribution rate (%) | 54.40 | 72.44 | 86.94 | 43.73 | 72.52 | 86.90 |
| SSAI | −0.10 | −0.02 | −0.01 | −0.21 | −0.33 | −0.06 |
| NDVI | 0.66 | −0.01 | 0.01 | 0.46 | 0.40 | −0.10 |
| EVI | 0.67 | 0.04 | −0.03 | 0.49 | 0.44 | −0.11 |
| LI | 0.00 | 0.16 | 0.99 | 0.00 | 0.03 | −0.24 |
| BI | 0.03 | 0.89 | −0.14 | −0.68 | 0.72 | 0.09 |
| SOM | 0.17 | −0.42 | 0.08 | 0.15 | 0.01 | 0.95 |
| NPP | 0.27 | 0.06 | 0.01 | 0.13 | 0.12 | 0.05 |