Modeling has arisen as a valuable tool for assisting environmental science and other relevant issues (Argent and Houghton 2001). Recent trends directed to management of natural resources have caused a demand for modeling approaches that can deal with various system aspects considered by managers, decision makers and stakeholders. These approaches require models of hydrology, land use, ecology, economics and other aspects of the natural and social to be modeled in an integrated outlook. To implement this, the concept of environmental modeling has appeared whereby models of different system components are linked and run
together in a way which allows observing the modeled effects of a range of systems interventions on various system components (Rizzoli and Davis 1999).
Recently, environmental modeling has been applied in a variety of projects, i.e. “Dynamic ecological-economic modeling for regional planning” (Safonov 2000), “MODULUS project” (Oxley and Winder 2002), “Integrated economic-hydrological water modeling at the basin scale: the Maipo river basin” (Rosegrant and Ringler 2004), “MULINO-DSS project” (Giupponi, Mysiak et al. 2004), “IWES project: development of an integrated decision support system for watershed management” (Kralisch and Fink 2003), “RIVERTWIN project” (Gaiser and Printz 2003) and many others.
Let us pass to the description of some of the listed projects mentioned above and give some other contemporary worldwide examples of modeling used in environmental science, particularly in water management and other water-related areas.
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