Modelling forest ecosystems: the Edinburgh Forest Model
نویسنده
چکیده
Reasons for building an ecosystem model are discussed, stressing the importance of objectives. A model is required for any research programme aiming to take a firm grasp of forest responses. The Edinburgh Forest Model (EFM) is outlined. This is a standard model of the genre, taking account of pools and fluxes of carbon (C), nitrogen (N) and water. It comprises tree, soil and water submodels. The tree submodel has a phenology submodel. There is an optional aphid submodel. The system has the usual environmental and management drivers. Evergreen or deciduous forests can be simulated, as even-aged stands of trees in a plantation or, using stand averages with self-thinning and regeneration, natural forests. Some typical simulations and applications of the model are listed, illustrating the scope of the model. Mechanistic models provide a framework for integrating complexity, clarifying thought, unifying results, understanding why they arise, and making predictions about future time courses of these ecosystems. _________________________________________________________________________
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