Table 10

Variable substitution method.

(1)
(2)
(3)
(4)
(5)
carbon1 carbon1 carbon1 carbon1 carbon1
AI −0.0008*** −0.0005*** −0.0011*** −0.0015*** −0.0015***
(0.000) (0.000) (0.000) (0.000) (0.000)
AI2 0.0000*** 0.0000*** 0.0000***
(0.000) (0.000) (0.000)
AI3 −0.0000*** −0.0000***
(0.000) (0.000)
CV NO YES YES YES YES
FE YES YES YES YES YES
N 30920 30900 30900 30900 30900
R2 0.6069 0.7540 0.7550 0.7552 0.7552

Note: *, **, and ***denote statistical significance at the 10%, 5%, and 1% levels, respectively. CV stands for “Control Variables.” Column (1) presents the regression results without control variables; Column (2) presents the regression results with added control variables; Column (3) presents the regression results with the addition of the squared term of AI; Column (4) presents the regression results with the addition of both the squared and cubic terms of AI; Column (5) presents the regression results with the addition of both the squared and cubic terms of AI, along with cluster processing to obtain more robust standard errors. The regression results show that the level of AI in enterprises has a significant negative impact on carbon emission intensity.

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