Measurement of surface water runoff from plots of two different sizes

Joel A.; Messing, I; Seguel, O.; Casanova, M

Abstract

Intensities and amounts of water infiltration and runoff on sloping land are governed by the rainfall pattern and soil hydraulic conductivity, as well as by the microtopography and soil surface conditions. These components are closely interrelated and occur simultaneously, and their particular contribution may change during a rainfall event, or their effects may vary at different field scales. The scale effect on the process of infiltration/runoff was studied under natural field and rainfall conditions for two plot sizes: small plots of 0.25 m2 and large plots of 50 m2. The measurements were carried out in the central region of Chile in a piedmont most recently used as natural pastureland. Three blocks, each having one large plot and five small plots, were established. Cumulative rainfall and runoff quantities were sampled every 5 min. Significant variations in runoff responses to rainfall rates were found for the two plot sizes. On average, large plots yielded only 40% of runoff quantities produced on small plots per unit area. This difference between plot sizes was observed even during periods of continuous runoff. Copyright © 2002 John Wiley and Sons, Ltd.

Más información

Título según WOS: Measurement of surface water runoff from plots of two different sizes
Título según SCOPUS: Measurement of surface water runoff from plots of two different sizes
Título de la Revista: HYDROLOGICAL PROCESSES
Volumen: 16
Número: 7
Editorial: Wiley
Fecha de publicación: 2002
Página de inicio: 1467
Página final: 1478
Idioma: English
URL: http://doi.wiley.com/10.1002/hyp.356
DOI:

10.1002/hyp.356

Notas: ISI, SCOPUS