Título:

Influence of 7-year old eucaliptus globulus plantation in the low flow of a small basin

Resumo:

In the hydrological year 1997/98 was made a plantation of Eucaliptus globulus, in a basin of 10.7 ha. Until the year 2003/04 was made a hydrological monitoring of the catchment with precipitation, temperature, solar radiation, and humidity measures. The flows were measured in continuous with a capacitive probe in a type “V” weir. For the seven observed years were determined the terms of the monthly water balance. The results show that at the present time, with 16 m of height of the trees (one half of their total growth time) the annual balance is not sensitive to the growth of the forest mass. However, the water balance for the dry season months (June, July, August and September), that define the low flow in the basin, shows a clear and sustained decrease with a descent in the flows that represents the 30% of the initial value.

Autores:

F., B. Soto, Pérez Brea, R. Díaz-Fierros