变量

ln_ETS

(1)

(2)

(3)

(4)

(5)

Post_treated

1.049^***

0.331^***

0.000

0.462^***

0.100^*

(0.159)

(0.127)

(0.057)

(0.138)

(0.064)

LC

−0.000^***

−0.000^***

−0.000^***

−0.000^***

(0.018)

(0.000)

(0.000)

(0.000)

FDI

0.203^***

0.022^**

0.188^***

0.021^**

(0.018)

(0.011)

(0.065)

(0.010)

ln_LSQ

−4.480^***

−0.048

0.330

−0.253^*

(0.182)

(0.112)

(0.230)

(0.133)

ln_PGDP

3.136^***

1.619^***

3.097^***

1.863^***

(0.159)

(0.128)

(0.317)

(0.183)

constant

25.016^***

0.165

9.695^***

−1.921

9.749^***

(0.094)

(2.019)

(0.895)

(2.796)

(2.174)

个体固定效应

NO

NO

Yes

No

Yes

时间固定效应

NO

NO

No

Yes

Yes

N

496

496

496

496

496

调整后的R²

0.078

0.673

0.577

0.686

0.594