Application of the Conditional Nonlinear Optimal Perturbations Method in the Shallow Lake Ecological Degradation and Restoration

Figure 5

The objective values caused by the CNOP-I, CNOP-P, and CNOP and the combination of CNOP-I and CNOP-P. The numbers 1, 2, 3, and 4 in the horizontal axis denote the four different basic states, respectively. 1 represents that the basic state is CES A; 2 represents that the basic state is TES B; 3 represents that the basic state is CES C; 4 represents that the basic state is TES D. The measurement of the objective function values is .