Booming with Speed: High-Speed Rail and Regional Green Innovation
Table 7
Placebo test.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
GUMA
GIA
GUMG
GIG
GUMA
GIA
GUMG
GIG
F2.HSR
0.0213
0.0103
0.0170
0.00453
(0.0158)
(0.0215)
(0.0146)
(0.00540)
F3.HSR
−0.0157
−0.0284
−0.0166
−0.00625
(0.0158)
(0.0211)
(0.0153)
(0.00537)
L.lngdp
0.0615
0.0676
0.0528
0.00897
0.110
0.107
0.0715
−0.0107
(0.0527)
(0.0622)
(0.0497)
(0.0144)
(0.188)
(0.169)
(0.193)
(0.164)
L.lnpop
0.167
0.196
0.155
0.0467
0.208
0.168
0.224
0.188
(0.0468)
(0.0597)
(0.0468)
(0.0159)
(0.0711)
(0.0639)
(0.0808)
(0.0791)
L.thirdpc
0.471
0.542
0.477
0.143
0.175
0.162
0.195
0.161
(0.144)
(0.201)
(0.137)
(0.0477)
(0.0465)
(0.0483)
(0.0500)
(0.0478)
L.lnfore
−0.0280
−0.0290
−0.0266
−0.00772
0.0353
0.0436
0.0236
0.00109
(0.00756)
(0.00958)
(0.00715)
(0.00227)
(0.0480)
(0.0575)
(0.0450)
(0.0134)
L.roadpc
−0.00274
−0.00188
−0.00309
−0.000360
0.147
0.157
0.144
0.0423
(0.00292)
(0.00347)
(0.00272)
(0.000875)
(0.0504)
(0.0599)
(0.0520)
(0.0179)
L.buspc
0.00852
0.0117
0.00783
0.00291
0.524
0.646
0.531
0.155
(0.00391)
(0.00498)
(0.00373)
(0.00122)
(0.140)
(0.193)
(0.137)
(0.0460)
L.lngre
−0.0129
−0.0316
−0.00856
−0.00640
−0.0258
−0.0271
−0.0256
−0.00732
(0.0186)
(0.0248)
(0.0184)
(0.00666)
(0.00686)
(0.00877)
(0.00667)
(0.00211)
L.lneduc
−0.0847
−0.0520
−0.0877
−0.00706
−0.00391
−0.00276
−0.00377
−0.000620
(0.0598)
(0.0675)
(0.0581)
(0.0150)
(0.00288)
(0.00343)
(0.00279)
(0.000896)
L.policy1
0.0446
0.0272
0.0473
0.00626
0.00766
0.00901
0.00729
0.00244
(0.0486)
(0.0610)
(0.0469)
(0.0142)
(0.00374)
(0.00457)
(0.00370)
(0.00117)
L.policy2
0.311
0.271
0.300
0.0619
−0.00619
−0.0181
−0.00374
−0.00419
(0.119)
(0.142)
(0.116)
(0.0334)
(0.0165)
(0.0218)
(0.0169)
(0.00620)
L.policy3
0.0443
0.0789
0.0247
0.0151
−0.0882
−0.0633
−0.0865
−0.00993
(0.00992)
(0.0150)
(0.00821)
(0.00260)
(0.0586)
(0.0648)
(0.0572)
(0.0148)
cons
−0.773
−1.289
−0.598
−0.272
−0.326
−0.738
−0.189
−0.124
(1.029)
(1.325)
(0.986)
(0.307)
(1.019)
(1.282)
(0.997)
(0.305)
Year
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
City
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
N
3362
3362
3362
3362
3082
3082
3082
3082
R2
0.262
0.203
0.253
0.204
0.247
0.186
0.247
0.190
Note: this table reports the results of the parallel trend hypothesis test, which are regressions of regional green innovation on two dummy variables by artificially advancing each HSR city’s HSR connection time two and three years ahead. All control variables are included and lagged by one year. All regressions include city fixed effects and year fixed effects. Robust standard errors in parentheses are clustered at the city level. The symbols ,, and indicate significance at the 1%, 5%, and 10% levels, respectively.
