解释变量

总体效应

直接效应

间接效应

IP

0.230^***

0.202^***

0.027^**

(5.91)

(5.64)

(2.22)

RP

−0.838^***

−0.737^***

−0.101^**

(−6.19)

(−6.40)

(−2.05)

lnCarPro

0.040^*

0.001

0.039^*

(1.71)

(1.35)

(1.72)

lnGDP

0.557^***

0.489^***

0.068^**

(5.62)

(5.96)

(2.00)

lnRoad

0.198^**

0.174^**

0.024

(2.37)

(2.41)

(1.49)

Urban

−0.003

−0.003

−0.000

(−0.71)

(−0.71)

(−0.64)

lnFinGDP

0.379^***

0.333^***

0.046^**

(5.90)

(6.31)

(2.02)

COVID

−0.197^***

−0.174^***

−0.023^*

(−2.91)

(−2.86)

(−1.83)

Highway

0.115^***

0.101^***

0.014^*

(4.05)

(4.23)

(1.80)

lnCarOwn

−0.209^***

−0.007

−0.202^***

(−2.65)

(−1.51)

(−2.71)

lnFreight

0.095^**

0.003

0.092^**

(2.15)

(1.47)

(2.17)