Figure 4: Hamiltonian function computed from the exceedence probability of the four other tree species involved into the reference landscape: P. nigra nigricans (squares, dashed line); Pinus sylvestris (dots, doted-dashed line); P. uncinata (stars, doted line); Fagus silvatica (circles, plain line). Their respective slopes of this loglog curve are highlighted with a mean-square linear fit.