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(Article of periodic en Anglais - 2013)

Document title

Impact of mulching on soil and water dynamics under intermittent simulated rainfall

Authors(s) and Affiliation(s)

MONTENEGRO A.A.A. (1) ; ABRANTES J.R.C.B. (2) ; DE LIMA J.L.M.P. (2) ; SINGH V.P. (3 4) ; SANTOS T.E.M. (4 5) ;
(1) Rural Federal Univ. of Pernambuco, Dept. of Rural Technology, Recife, BRESIL
(2) Marine and Environmental Research Centre (IMAR-CMA), Univ., Coimbra, PORTUGAL
(3) Dept. of Biological and Agricultural Engineering, Texas A and M Univ., Tamu, ETATS-UNIS
(4) Dep. of Civil & Environmental Engineering, Texas A and M Univ., Tamu, ETATS-UNIS
(5) Federal Univ. of Recôncavo Baiano, Centre of Agrarian, Environmental and Biological Sciences, Cruz das Almas, BRESIL

Abstract

This study aimed to investigate in laboratory the effect of distinct mulch densities on runoff and sediment transport, by using multiple step intermittent rainfall events. Laboratory experiments were conducted using a soil flume and rainfall simulator with 3 soil cover treatments: 1) bare soil; 2) low mulch cover, 2 t/ha density; and 3) high mulch cover, 4 t/ha density. Experiments comprised a sequence of 5 different rainfall events in an intermittent way, i.e., 3 uniform patterns with increasing rainfall intensities, one advanced pattern and one delayed pattern. The laboratory experiments described in this work clearly show that mulching strongly affects infiltration, soil moisture, surface runoff and erosion. Intermittency and characteristics of sequential rainfall events also influenced these processes. High mulch cover rates resulted in a significant increase in soil moisture. Additionally, soil temperature was more optimally regulated under a mulch cover density of 4 t/ha

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 109 [pp. 139-149]

Bibliographic references : 35 ref.

Collation : 17 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.03.018

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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