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| Index | evaluation standard or critical value for fit | Model for Nmass | Model for Narea |
|---|---|---|---|
| χ2 | 5.788 | χ2 = 6.186 | |
| p | >0.05 | 0.565 | 0.403 |
| AGFI | >0.90 | 0.923 | 0.903 |
| RMSEA | <0.08 | <0.001 | 0.021 |
| CFI | >0.90 | 1.000 | 0.998 |
Abbreviations are: χ2, the chi-square test; RMSEA, the root square mean error of approximation; AGFI, adjusted goodness of fit index; CFI, the comparative fit index; Nmass, foliar N per unit mass; Narea, foliar N per unit area.
