Table 10 Threshold effect of TFEE on carbon emission levels and carbon neutrality.

From: Impacts and threshold effects of total factor energy efficiency on carbon emissions and carbon neutrality across China’s cities

 

lnCE

lnCI

 

Range

Coefficient

Range

Coefficient

EC

EC ≤ 2.6660

−1.234*** (0.049)

EC ≤ 2.6660

−0.813*** (0.054)

 

2.6660 < EC ≤ 4.5713

−0.470*** (0.040)

EC > 2.6660

−0.530*** (0.043)

 

EC > 4.5713

0.157*** (0.045)

  

Constant

 

5.911*** (0.069)

 

1.966*** (0.077)

Control Variables

 

Y

 

Y

N

 

3402

 

3402

F

 

242.089***

 

221.714***

\({R}^{2}\)

 

0.3807

 

0.3586

 

lnCD

CN

 

Range

Coefficient

Range

Coefficient

EC

EC ≤ 2.8820

−1.168*** (0.047)

EC ≤ 5.8991

−3.796*** (0.811)

 

2.8820 < EC ≤ 4.5713

−0.446*** (0.040)

EC > 5.8991

7.659*** (1.331)

 

EC > 4.5713

0.154*** (0.045)

  

Constant

 

0.109 (0.069)

 

−18.570*** (1.506)

Control Variables

 

Y

 

Y

N

 

3402

 

3402

F

 

210.419***

 

18.522***

\({R}^{2}\)

 

0.3482

 

0.0395

  1. *, ** and *** indicate that the variables are significant at the 10%, 5% and 1% significance levels, respectively.
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