变量

模型2

模型3

模型4

模型5

lngdp

0.2190666^**

0.2042167^*

0.2357152^**

0.2126822^*

(1.97)

(1.91)

(2.30)

(1.81)

lngdpi

0.9692423^***

1.016492^***

0.907602^***

1.031342^***

(7.76)

(8.08)

(7.51)

(8.04)

lndis

−0.2115559^***

−0.2232792^***

−0.2102917^***

−0.2163774^***

(−2.70)

(−2.87)

(−2.73)

(−2.73)

lnopen

0.4622384^***

0.5274463^***

0.4924482^***

0.5133202^***

(3.10)

(3.56)

(3.51)

(3.44)

lnforest

−0.1772439^**

−0.1866642^**

−0.1633065^**

−0.1887426^**

(−2.04)

(−1.97)

(−2.12)

(−2.00)

border

0.0003291

0.015217

0.0152193

0.0128329

(0.00)

(0.04)

(0.05)

(0.03)

apec

0.4878524^*

0.4843025^*

0.4712262^*

0.472182

(1.38)

(1.26)

(1.51)

(1.24)

sco

0.2943327

0.2493494

0.2019489

0.2778052

(0.83)

(0.64)

(0.64)

(0.72)

lntfia

0.3428975^**

(1.64)

lntfib

0.2118203^**

(2.10)

lntfic

0.3428102^***

(2.66)

lntfid

0.2048818^*

(1.29)

_cons

6.434223^**

5.803909^**

6.686000^***

5.429213^**

(2.43)

(2.45)

(2.87)

(2.15)

R²

0.5990

0.6061

0.6083

0.5986