562081.fig.004a
(a)
562081.fig.004b
(b)
562081.fig.004c
(c)
562081.fig.004d
(d)
Figure 4: The 15-year nonlinear evolution of the lake ecosystem, with the basic state as the initial condition and - as the control parameter. (a) , the basic state is OES A; (b) , the basic state is OES B; (c) , the basic state is EES C; (d) , the basic state is EES D.