Abstract: A general model for the dynamic development of plant communities is proposed with the well-known classical models such as Logistic competition model and Markov model as its special cases. The model is intended to explain and predict the development of a vegetation system based on the interactions among the plants, the environmental quantities and external disturbances to the system. The vegetation system is considered to be a system of feedback control with coupled differential equations for plant measurements and environmental quantities. Finally, the model is linearized locally to give year-by-year prediction based on past and present observations of the system using the least square fit of the time derivatives of the system variables against the variables themselves. This local dynamic model of vegetation system is applicable to any dynamic systems regardless of the linear or nonlinear behavior of the systems.