YIN Kang qian NI Jin ren

(Peking University, Beijing 100871)

Abstract: Based on the wetland classification systems presented in the companion paper, typical mathematical models are further developed for wetlands. Special attentions are paid to the series of hydrological models, including surface runoff mo delling, hydrodynamic modelling, water quality modelling, sediment transport mo delling, etc. Secondly, the simple relationship among the models as well as that between hydrological models and ecological models are discussed. According to the analysis stated in this paper, various wetland classification indexes characterized by dynamic behaviours physically, chemically or biologically could be quantitatively described by the given mathematical models. It is indicated that the comprehensive classification system for wetlands allow for feasible introduction of wetland models, but the complete coupling of all the models is still not possible in the present stage. Thus, simple causality analysis becomes very necessary in the study of wetland modelling.

Keywords: wetland, model, dynamic characteristics, classification