变量

(1)

(2)

(3)

(4)

东部

中部

西部

东北

GF

−1.94257^***

20.269

−40.623^***

9.099

(0.460)

(19.913)

(4.047)

(6.519)

lnGDP

−43.278^***

133.184

−82.826^***

31.900

(12.132)

(80.092)

(19.440)

(19.420)

lnGDP²

4.361^***

−15.222^*

9.106^***

−4.209^*

(1.246)

(8.940)

(2.105)

(2.114)

lnFDI

−0.742^***

−10.907^***

−0.769^**

1.575^***

(0.149)

(1.635)

(0.308)

(0.308)

lnCITY

−1.774

23.497^***

11.586^***

−1.070

(1.221)

(15.994)

(3.741)

(3.204)

YEAR

Yes

Yes

Yes

Yes

Cons

114.693^***

−300.716

177.829^***

−58.063

(28.709)

(182.361)

(42.836)

(44.990)

Obs

108

72

144

36

R-squared

0.802

0.681

0.741

0.982