Models of the long-term ecological successions are considered. The model of open Eigen's hypercycle has been used to model the process. It is shown that ecological succession is a complex process with ability for self-organisation. It is distinguished two type of selforganisation: by adjusting system control parameters or by change of quantity of its components. The first type is determined by bifurcation properties of the system. In both cases the process is under essential influence of a level of flows of matter and information through the system.