Figure 2
A line graph compares the environmental benefits of three policies: no-subsidy, price-subsidy, and green-subsidy under equal subsidy expenditure. The x-axis represents the price subsidy coefficient ranging from 0.1 to 0.9. The y-axis represents the environmental benefit ranging from 0 to 450. The graph includes three data lines: a blue line for the no-subsidy policy, a green line with diamond markers for the price-subsidy policy, and a green line with square markers for the green-subsidy policy. The blue line remains relatively flat, indicating minimal environmental benefit across all price subsidy coefficients. The green lines show a significant increase in environmental benefit as the price subsidy coefficient increases, with the green-subsidy policy showing the most substantial benefit, especially as the coefficient approaches 0.9. All values are approximated.Environmental benefit comparison among the no-subsidy, price-subsidy and green-subsidy policies under equal subsidy expenditure