Table 8 Environmental improvement effects.
Variable | Sulfur dioxide emissions | Nitrogen oxide emissions | Soot and dust emissions | Chemical oxygen emissions | Nitrogen emissions | Phosphorus emissions |
|---|---|---|---|---|---|---|
CTGT | − 0.071*** (0.024) | − 0.023* (0.014) | − 0.057*** (0.022) | − 3.897*** (0.461) | − 0.534*** (0.083) | − 0.020*** (0.004) |
Control variable | Controlled | Controlled | Controlled | Controlled | Controlled | Controlled |
Constant | 1.866*** (0.422) | − 0.174 (0.300) | 2.312*** (0.444) | − 148.659*** (8.835) | − 48.076*** (2.341) | − 1.897*** (0.097) |
R2 | 0.771 | 0.717 | 0.726 | 0.785 | 0.831 | 0.837 |
Observation | 3080 | 3080 | 3080 | 3080 | 3080 | 3080 |
