According to frequent occurrences of ecological events in Dongting Lake and lack of unified warning platform of ecological events in management departments, A detailed description on thinking and process of constructing ecological events warning system by using component technology and GIS is given in this paper. These thinking and process includes overall design, data flow design, function design, ecological events warning model design and software development. Finally, take the Microtus Fortis outbreak in Dongting Lake District for example, the ecological factor and warning model of Microtus...
