INVESTIGADORES
ROSTAGNO Cesar Mario
artículos
Título:
Runoff and Erosion in Five Land Units of a Closed Basin of Northeastern Patagonia
Autor/es:
ROSTAGNO, C.M., F. CORONATO, F. DEL VALLE Y D. PUEBLA
Revista:
ARID SOIL RESEARCH AND REHABILITATION
Editorial:
Taylor and Francis
Referencias:
Año: 1999 vol. 13 p. 281 - 292
ISSN:
0890-3069
Resumen:
Soil loss and runoff were assessed in five land units (LUs) of a closed basin by means of 18 experimental plots within a 42 month period . Temporal distribution of runoff and erosion was unequal . Among 120 rainfall events recorded during the study period , only 15 events caused runoff . Maximum percent of runoff (79 . 9 % ) and maximum specific runoff (19.5 Lm-2) were produced by the two events of highest intensity and were recorded in a LU characterized by a crusted and com pacted sandy loam soil . These two events also accounted for more than 60 % of the total soil loss . Soil loss was negatively correlated to percent of sand in the top soil (r=-0.91 and vegetation cover (r=-0.69) and ranged from 37.0 gm-2 (sand) to 1661.7 gm-2 (clay).
