Research Article
Is the High-Speed Rail Opening Environmentally Friendly? Taking the Difference-in-Differences Test in Jiangsu, China
Table 5
Test of spillover effects in the central city circle.
| | | (1) | (2) | (3) | (4) | (5) | (6) | | Goodday | Goodday | Goodday | Goodday | Goodday | Goodday |
| | G_S | 0.121
(0.035) | 0.066
(0.060) | 0.066
(0.060) | 0.057
(0.060) | 0.063
(0.059) | 0.090
(0.059) | | PGDP | — | −0.027
(0.020) | −0.028
(0.060) | −0.127
(0.091) | −0.112
(0.091) | −0.054
(0.092) | | PGDP2 | — | −1.61 × 10−11
(6.05 × 10−12) | −1.62 × 10−11
(6.35 × 10−12) | −2.15 × 10−11
(7.36 × 10−12) | −1.96 × 10−11
(7.33 × 10−12) | −2.78 × 10−11
(7.86 × 10−12) | | T3 | — | — | 0.001
(0.055) | −0.016
(0.056) | −0.022
(0.055) | −0.007
(0.055) | | PI | — | — | — | 0.189
(0.132) | 0.093
(0.137) | 0.018
(0.138) | | U | — | — | — | — | 0.477
(0.203) | 0.520
(0.201) | | FDI | — | — | — | — | — | −0.062
(0.024) | | Constant | 5.652
(0.011) | 5.957
(0.199) | 5.940
(0.799) | 5.596
(0.832) | 6.249
(0.869) | 5.783
(0.875) | | Time effect | Control | Control | Control | Control | Control | Control | | Urban effect | Control | Control | Control | Control | Control | Control | | Within R2 | 0.056 | 0.155 | 0.155 | 0.164 | 0.186 | 0.213 | | Samples | 234 | 234 | 234 | 234 | 234 | 234 |
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, , and indicate the level of significance through 1%, 5%, and 10%, respectively. |
