Research Article
Is the High-Speed Rail Opening Environmentally Friendly? Taking the Difference-in-Differences Test in Jiangsu, China
Table 4
Counterfactual experiment results.
| | | (1) | (2) | | Goodday | Goodday |
| | L2_G | 0.216
(0.038) | — | | L3_G | — | 0.215
(0.038) | | PGDP | −0.003
(0.085) | 0.049
(0.087) | | PGDP2 | −3.00 × 10−11
(6.12 × 10−12) | −2.40 × 10−11
(5.91 × 10−12) | | T3 | −0.028
(0.051) | −0.030
(0.051) | | PI | −0.055
(0.129) | −0.240
(0.132) | | U | 0.509
(0.188) | 0.443
(0.188) | | FDI | −0.053
(0.022) | −0.046
(0.022) | | Constant | 6.500
(0.824) | 6.872
(0.834) | | Time effect | Control | Control | | Urban effect | Control | Control | | Within R2 | 0.313 | 0.315 | | Samples | 234 | 234 |
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, , and indicate the level of significance through 1%, 5%, and 10%, respectively. |
