Analysis of Water Regime Modification Induced by Long-Term Development of Vegetation Cover

The actual aims of rainfall-runoff modelling are to use such tools for the evaluation of different changes in the water regime: first, during complex climatic variability and, second, due to natural land-use changes, which is an urgent matter within the previous long periods. In this context, the desirable information concerning vegetation cover is to be compensated by evapotranspiration as optimal monthly values. The intention is to decrease uncertainties in the water regime due to different oscillations. It requires the evaluation of the naturally appearing fluctuations and the abrupt, seemingly random changes in the basin. This sequential variability of the water regime is usually influenced through changes in vegetation cover in the annual cycle.