Abstract

YANEZ-DIAZ, María Inés; CANTU-SILVA, Israel; GONZALEZ-RODRIGUEZ, Humberto  and  UVALLE-SAUCEDA, José I.. Redistribution of Precipitaiton in Three Native Brush Species and a Eucalyptus Plantings in Northeastern Mexico. Tecnol. cienc. agua [online]. 2014, vol.5, n.2, pp.71-84. ISSN 2007-2422.

The redistribution of precipitation was studied in three scrubland species and a Eucalyptus camaldulensis plantation in Linares, Nuevo Leon, Mexico. Measurements were taken of incident precipitation, throughfall and stemflow from April 18, 2009 to June 7, 2010. The following were determined and compared for the four species studied: net precipitation, interception loss, canopy storage capacity, pH and electrical conductivity. The analysis of 48 individual rainfall events resulted in a total of 978.77 mm of incident precipitation, finding throughfall for Prosopis laevigata, Eucalyptus camaldulensis, Ebenopsis ebano and Helietta parvifolia of 74, 85, 65 and 67%, respectively. Canopy interception loss was estimated at 25, 15, 34 and 33% for P. laevigata, E. camaldulensis, E. ebano and H. parvifolia, respectively, for which most of the interception by E. ebano and H. parvifolia can be explained by the canopies of these species being more dense and the geometric arrangement of their branches, which contributed to more interception than that by E. camaldulensis and P. laevigata. Stemflow values ranged from 0.23% for P. laevigata to 3.66% for E. camaldulensis, and the canopy storage capacity ranged from 0.03 for H. parvifolia to 0.27 mm for E. camaldulensis. Rain leaching generally presented slightly acidic pH values and the electrical conductivity increased as it passed over the canopies, indicating base leaching.

Keywords : throughflow; stemflow; interception loss; storage capacity; Eucalyptus camaldulensis; Ebenopsis ebano; Helietta parvifolia; Prosopis laevigata.

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