Abstract: Wetland, as a kind of living spatial entity, has complex spatio-temporal behaviors. The cognition and presentation of its behaviors have always been the focus and difficulty in this field. The pan-spatial information system could abstract and describe the real world directly based on spatio-temporal objects of multi-granularity, which is more convenient than traditional GIS for people's cognitive habits. Therefore, this paper, using the method of spatio-temporal objects of multi-granularity modeling, initially explores the cognition and presentation of its spatio-temporal behaviors by analyzing and summarizing the wetland data organization method, spatio-temporal behavioral cognition, classification, representation respectively. It turns out that wetland's spatio-temporal behaviors could be classified by the granularity, number, characteristic attributes of wetland respectively. And the representation of behaviors could be progressed by three levels, including dynamic display, analytical modeling and model prediction. Furthermore, this method, compared with the previous representation methods, has many advantages, such as dynamic, correlation and real-time. Finally, it could provide a new method for the dynamic monitoring of wetland resources.

Key words: wetland, multi-granularity, spatio-temporal objects, behavior cognition, behavior presentation