Capture of overland flow by a tree belt on a pastured hillslope in south-eastern Australia
Identifieur interne : 00A060 ( Main/Exploration ); précédent : 00A059; suivant : 00A061Capture of overland flow by a tree belt on a pastured hillslope in south-eastern Australia
Auteurs : T. W. Ellis [Australie] ; S. Leguedois [Australie, France] ; P. B. Hairsine [Australie] ; D. J. Tongway [Australie]Source :
- Australian journal of soil research [ 0004-9573 ] ; 2006.
Descripteurs français
- Pascal (Inist)
- Wicri :
- geographic : Australie.
- topic : Agroforesterie, Arbre.
English descriptors
- KwdEn :
Abstract
We describe a rainfall simulator experiment designed to measure the capture, by a fenced tree belt, of excess water generated as Hortonian flow from a pasture slope. Three rainfall events (48, 49, and 75 mm/h for 13, 30, and 30min, respectively) were applied, of which 15%, 29%, and 44%, respectively, ran off and drained onto the tree belt. The tree belt captured 100%, 32-68%, and 0-28% of the runoff from the 3 events, respectively. These captured runoff volumes represented 31-39%, 22-45%, and 0-29% increases in water supply to the trees, in addition to incident rainfall. Infiltration rates within the tree belt were up to 46% higher than in the pasture zone. This higher infiltration was mainly attributed to better soil surface conditions in the absence of stock and a 50-mm layer of tree litter. Overland flows within the tree belt formed tree litter into microterraces, which spread and slowed flows and allowed greater time for infiltration.
Affiliations:
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- to stream PascalFrancis, to step Corpus: 004428
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Le document en format XML
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<term>Australia</term>
<term>Capture</term>
<term>Land slope</term>
<term>Litter</term>
<term>Overland flow</term>
<term>Runoff</term>
<term>Runoff water</term>
<term>Southeast</term>
<term>Water management</term>
<term>Wooded strip</term>
<term>infiltration</term>
<term>slopes</term>
<term>surface water</term>
<term>terraces</term>
<term>trees</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Capture</term>
<term>Ruissellement plan incliné</term>
<term>Pente terrain</term>
<term>Versant</term>
<term>Ruissellement eau sol</term>
<term>Eau ruissellement</term>
<term>Agroforesterie</term>
<term>Eau surface</term>
<term>Gestion eau</term>
<term>Arbre</term>
<term>Sud est</term>
<term>Australie</term>
<term>Litière</term>
<term>Terrasse</term>
<term>Infiltration</term>
<term>Micro-terrasse</term>
<term>Bande boisée</term>
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<keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Australie</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Agroforesterie</term>
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<front><div type="abstract" xml:lang="en">We describe a rainfall simulator experiment designed to measure the capture, by a fenced tree belt, of excess water generated as Hortonian flow from a pasture slope. Three rainfall events (48, 49, and 75 mm/h for 13, 30, and 30min, respectively) were applied, of which 15%, 29%, and 44%, respectively, ran off and drained onto the tree belt. The tree belt captured 100%, 32-68%, and 0-28% of the runoff from the 3 events, respectively. These captured runoff volumes represented 31-39%, 22-45%, and 0-29% increases in water supply to the trees, in addition to incident rainfall. Infiltration rates within the tree belt were up to 46% higher than in the pasture zone. This higher infiltration was mainly attributed to better soil surface conditions in the absence of stock and a 50-mm layer of tree litter. Overland flows within the tree belt formed tree litter into microterraces, which spread and slowed flows and allowed greater time for infiltration.</div>
</front>
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