Table 6.
Threshold effect test results foreign investment and carbon emissions.
| Threshold Variable | Model | F-Value | p-Value | BS Times | Critical Value | ||
|---|---|---|---|---|---|---|---|
| 1% | 5% | 10% | |||||
| rd | Single-Threshold Model | 10.947 *** | 0.005 | 300 | 8.575 | 4.575 | 2.785 |
| Double-Threshold Model | 2.462 | 0.131 | 300 | 8.789 | 4.458 | 2.917 | |
| Three-Threshold Model | 0.822 | 0.345 | 200 | 7.141 | 3.687 | 2.613 | |
| ci | Single-Threshold Model | 12.215 ** | 0.050 | 300 | 19.175 | 12.526 | 8.995 |
| Double-Threshold Model | 5.084 | 0.213 | 300 | 23.800 | 16.708 | 11.404 | |
| Three-Threshold Model | 3.188 | 0.160 | 200 | 6.858 | 5.479 | 4.224 | |
| is | Single-Threshold Model | 8.921 ** | 0.016 | 300 | 9.745 | 4.366 | 2.611 |
| Double-Threshold Model | 4.864 ** | 0.026 | 300 | 7.308 | 3.764 | 2.866 | |
| Three-Threshold Model | 3.409 * | 0.0620 | 200 | 7.853 | 3.869 | 2.745 | |
Note: ***, **, * are significant at 1%, 5%, and 10% significance levels, respectively.