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Environmental Sciences Europe

Table 6 Mediating effects of high-quality human capital

From: How does high-speed railway affect green technology innovation? A perspective of high-quality human capital

Variables

Quantity of GTI

Quality of GTI

(1)

(2)

(3)

(4)

(5)

(6)

GTI_Quan

HQT

GTI_Quan

GTI_Qua

HQT

GTI_Qua

HSR

0.105**

1.570***

0.093**

0.281***

1.570***

0.273***

(2.32)

(2.79)

(2.07)

(3.85)

(2.79)

(3.74)

HQT

  

0.008***

  

0.005*

  

(3.08)

  

(1.82)

Constant

− 2.779***

6.713**

− 2.829***

− 1.539

6.713**

− 1.573

(− 5.03)

(1.99)

(− 5.23)

(− 1.54)

(1.99)

(− 1.57)

Observations

3,432

3,432

3,432

3,432

3,432

3,432

R-squared

0.662

0.171

0.663

0.388

0.171

0.389

Number of cities

286

286

286

286

286

286

Control variables

Yes

Yes

Yes

Yes

Yes

Yes

City FE

Yes

Yes

Yes

Yes

Yes

Yes

Time FE

Yes

Yes

Yes

Yes

Yes

Yes

  1. Robust t-statistics in parentheses
  2. ***p < 0.01, **p < 0.05, *p < 0.1
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