Table 3.
Revised OLS models of the multiple regression analyses between vegetation recovery and soil factors.
| Cover | Biomass | Richness | Diversity | |
|---|---|---|---|---|
| AK | ||||
| B | 39.80*** | 6.82*** | — | 0.76** |
| SEB | 6.88 | 1.33 | 0.27 | |
| SOC | ||||
| B | 10.21** | 0.72 | — | — |
| SEB | 3.23 | 0.65 | ||
| CS | ||||
| B | −3.60** | — | — | — |
| SEB | 1.17 | |||
| TN | ||||
| B | — | 2.39* | 5.12*** | — |
| SEB | 1.00 | 1.10 | ||
| PRO | ||||
| B | — | −0.40 | — | 0.10* |
| SEB | 0.24 | 0.049 | ||
| PHO | ||||
| B | — | 1.04 | 1.84* | — |
| SEB | 0.67 | 0.73 | ||
| CLS | ||||
| B | — | — | −1.07 | — |
| SEB | 0.68 | |||
| SW | ||||
| B | — | — | — | 0.71** |
| SEB | 0.22 | |||
| Constant | ||||
| B | −47.49** | −5.94 | 8.96*** | −0.99* |
| SEB | 16.59 | 3.21 | 1.76 | 0.50 |
| AR (1) | ||||
| B | 0.46*** | 0.51*** | 0.30** | 0.23* |
| SEB | 0.10 | 0.098 | 0.10 | 0.10 |
| AR (4) | ||||
| B | — | — | — | −0.22* |
| SEB | 0.11 | |||
| Adjusted R2 | 0.71 | 0.71 | 0.53 | 0.37 |
| Pf | 0.00 | 0.00 | 0.00 | 0.00 |
| SEE | 10.35 | 1.82 | 1.98 | 0.41 |
| n | 94 | 93 | 95 | 92 |
Notes: Autocorrelation was eliminated using the generalized difference method with EViews version 8. AR (1) and AR (4) denote the estimated values of the coefficients for first- and fourth- order autocorrelation, respectively. ***Pt < 0.001; **Pt < 0.01; *Pt < 0.05. Pt denotes p value of the t-test for an individual regression coefficient. The other abbreviations are as presented in Table 1.