CYBERNETICS OF HYDROAMELIORATION PROCESSES AND SIMULATION MODELS.

Hydroamelioration work is defined as a group of activities for solving water-related agricultural problems. The aim of this study is to establish a methodology for modeling the development in a time frame of hydroamelioration work in order to substantiate one technical decision or another. Two distinct parts can thus be distinguished in the proposed methodology: the simulation model of the physical phenomenon and the optimization economic calculus. The simulation model is based on the fact that each process is conceived as being a cybernetic system with self-adjustment and which has as an expression a ratio which is solved through finite differences. The choosing of the most adequate technical method out of a suite of proposals for the adjustment of a vegetation factor is made by taking into consideration not only its economic efficiency (investment, annual expenditure and/or profits) but also the functionality of the method, its reliability synthetically expressed by productivity. Results concerning the evolution of humidity of the soil on five layers on an experimental lot are given.