Adaptability of agroecosystem dynamic models to different soil- and climate conditions

Agroecosystems play an essential role in terrestrial water, energy and nutrient chains. Agroecological models are developed for certain sites and conditions. At the same time a totality of processes taking place in a system “soil-plants-atmosphere” is closely connected with environmental conditions, that vary from one location to another. So the problem arises: “Whever the model developed and calibrated with data from one specific site conditions is applicable to the other geographical and climatic regions?”. It is especially important because many scientists try to use existing models to large territories including several climatic zones. The problem of model adaptability, i.e. the possibility of its transfer from one place to another, is considered in the paper.