变量

检验方法

结论

LLC

IPS

ADF

PP-Fisher

ln(OFDI)

−8.16424^***

−6.03525^***

76.1419^***

90.0670^***

平稳

G

−9.57323^***

−5.95386^***

69.7249^***

96.9812^***

平稳

M

−6.80998^***

−4.74496^***

55.5012^***

63.5933^***

平稳

ln(GDP)

−8.85054^***

−4.06094^***

49.3076^***

69.2186^***

平稳

ln(TRADE)

−9.24539^***

−4.52300^***

54.9392^***

85.1895^***

平稳

TAX

−9.26641^***

−5.71467^***

65.0114^***

102.638^***

平稳

EDIST)

−8.53758^***

−5.40726^***

62.5017^***

94.2701^***

平稳

RESOURCE

−10.8345^***

−8.24181^***

95.1339^***

142.288^***

平稳