Partial exclusion of precipitation: throughfall, stemflow and canopy interception in Eucalyptus plantations in southern Brazil

Hydrological behavior in reforested watersheds is different from that under other forms of cover. The variation may be related to aspects intrinsic species, planting density, physiological maturity, management system and climatic conditions. Periodically, anomalies such as the case La Ninã are observed, these responsible for alteration rainfall regime consequently generate water deficits southern region Brazil. Water deficit reducing growth productivity Eucalyptus genus, addition causing changes hydrological watersheds. Accordingly, this study compared partition throughfall, stemflow canopy interception eucalyptus trees submitted or not partial exclusion precipitation. In open field, 3 collectors were installed, stand, each rain treatment, 9 throughfall installed. Every two weeks 12 months, volume was measured. quantified precipitation 1627 mm over a year. treatment without exclusion, 84.8, 2.9 12.3% referred interception, respectively, while excluding 80.6, 2.3 17.2% interception. regression adjustments showed satisfactory R2 coefficients.