Model of competition and mutualism among ports based on nonlinearity dynamic system

An attempt is made to analyze the competition and mutualism among ports in the same port group by adopting the nonlinearity dynamic LV model which simulates the population dynamic relation in ecology,and two models are built to describe them.The model's stability is analyzed to give the states and the conditions of market structure and win-win of competition and of mutualism in an non-equilibrium market.The historical evolution about competition and mutualism among ports is discussed in order to give more knowledge for healthy port development and planning management.