Table 3. Evaluation index data of the fitting effect of each input-output index.

Variable	R2	adjusted_R2	MAE	MSE
Green area	0.9763	0.9755	0.0115	0.0786
Carbon emissions from human respiration	0.9824	0.9818	0.0056	0.0548
Domestic garbage removal volume	0.9620	0.9607	0.0135	0.0765
General industrial solid waste emissions	0.9800	0.9792	0.0251	0.1239
Carbon emission efficiency	0.9752	0.9712	0.0139	0.0834