Sediment trapping by a tree belt: processes and consequences for sediment delivery
Identifieur interne : 008748 ( Main/Exploration ); précédent : 008747; suivant : 008749Sediment trapping by a tree belt: processes and consequences for sediment delivery
Auteurs : Sophie Leguédois [France] ; Tim W. Ellis [Australie] ; Peter B. Hairsine [Australie] ; David J. Tongway [Australie]Source :
- Hydrological Processes [ 0885-6087 ] ; 2008-08-15.
Descripteurs français
- Pascal (Inist)
- Adsorption, Alluvion, Arbre, Australie, Distribution dimension, Débit, Eau pluie, Ecoulement, Effet végétation, Fraction grossière, Fragment, Hydraulique, Infiltration, Matière en suspension, Matière organique, Modèle, Nouvelle Galles du Sud, Pluie, Polluant, Pollution, Porosité, Ruissellement, Simulation numérique, Sol, Terrasse, Transport, Végétation.
- Wicri :
- geographic : Australie.
- topic : Arbre, Droit d'auteur, Hydrologie, Polluant, Pollution, Simulation, Eau superficielle.
English descriptors
- KwdEn :
- Adsorption, Aggregate size distribution, Aggregate size distributions, Agricultural engineers, Agricultural lands, America journal, American society, Asds, Australia, Australian journal, Backwater, Backwater sedimentation, Bare soil zone, Biological activity, Biological macropores, Buffer zone, Bulk densities, Bulk density, Catchment, Catchment hydrology, Clay fraction, Coarse size distribution, Coarse size fractions, Coarsest, Coarsest size fractions, Cooperative research centre, Copyright, Dabney, Different processes, Dillaha, Dosskey, Earth surface processes, Elli, Environmental management, Environmental quality, Error bars, Exceptional rainstorm, Experimental area, Experimental conditions, Experimental design, Experimental plot, Experimental setup, Experimental site, Extreme conditions, Forested, Forested buffers, Fragment, Ghadiri, Grass strip, Grass strips, Hairsine, High proportion, Higher proportion, Hydraulic, Hydraulic parameters, Hydraulic roughness, Hydrol, Hydrological processes, Hydrology, Image analysis, Intense rainfall conditions, Intense rainfall events, John wiley sons, Laser, Laser diffraction measurement, Laser diffraction sizer, Leaf fragments, Litter, Litter barrier, Litter dams, Litter debris, Loch, Lter, Lter strip, Lter strips, Macropores, Mineral soil fragments, Nest fractions, Nest fragments, Nest soil fragments, New South Wales, Organic debris, Oversize, Oversize fractions, Pasture area, Pasture plot, Plant debris, Ponded water, Qinput qoutput, Rainfall, Rainfall event, Rainfall events, Rainfall intensity, Rainfall simulation, Rainfall simulations, Rainfall simulator, Regent instrument, Relative contribution, Riparian, Riparian forest, Runoff, Runoff event, Same event, Samples sieved, Sediment, Sediment budget, Sediment budgets, Sediment concentration, Sediment delivery, Sediment mass, Sediment size distribution, Sediment transport, Sedimentation, Sedimentation process, Shape fraction, Shape fractions, Silt loam aggregates, Simulation, Size distribution, Size distributions, Size fraction, Size fractions, Size range, Size selectivity, Small litter dams, Small sticks, Soil fragments, Soil research, Soil science society, Soil surface, Soil surface conditions, Standard errors, Stream management, Strs, Surface water, Temporal evolution, Total mass, Total sediment mass, Total sediment masses, Tree belt, Tree belt area, Tree belt plot, Tree belt table, Tree belts, Tree litter, Tree tops, Undersize, Undersize fraction, Vegetative, Velocity distribution, Velocity distributions, Volume percentage, Volume proportion, Weight diameter, Whole system, Wide range, Woody buffer, adsorption, alluvium, coarse-grained materials, digital simulation, discharge, flow, fragments, hydraulics, infiltration, models, organic materials, pollutants, pollution, porosity, rain water, rainfall, runoff, size distribution, soils, suspended materials, terraces, transport, trees, vegetation, vegetation effects.
- Teeft :
- Adsorption, Aggregate size distribution, Aggregate size distributions, Agricultural engineers, Agricultural lands, America journal, American society, Asds, Australian journal, Backwater, Backwater sedimentation, Bare soil zone, Biological activity, Biological macropores, Buffer zone, Bulk densities, Bulk density, Catchment, Catchment hydrology, Clay fraction, Coarse size distribution, Coarse size fractions, Coarsest, Coarsest size fractions, Cooperative research centre, Copyright, Dabney, Different processes, Dillaha, Dosskey, Earth surface processes, Elli, Environmental management, Environmental quality, Error bars, Exceptional rainstorm, Experimental area, Experimental conditions, Experimental design, Experimental plot, Experimental setup, Experimental site, Extreme conditions, Forested, Forested buffers, Fragment, Ghadiri, Grass strip, Grass strips, Hairsine, High proportion, Higher proportion, Hydraulic, Hydraulic parameters, Hydraulic roughness, Hydrol, Hydrological processes, Hydrology, Image analysis, Intense rainfall conditions, Intense rainfall events, John wiley sons, Laser, Laser diffraction measurement, Laser diffraction sizer, Leaf fragments, Litter, Litter barrier, Litter dams, Litter debris, Loch, Lter, Lter strip, Lter strips, Macropores, Mineral soil fragments, Nest fractions, Nest fragments, Nest soil fragments, Organic debris, Oversize, Oversize fractions, Pasture area, Pasture plot, Plant debris, Ponded water, Qinput qoutput, Rainfall, Rainfall event, Rainfall events, Rainfall intensity, Rainfall simulation, Rainfall simulations, Rainfall simulator, Regent instrument, Relative contribution, Riparian, Riparian forest, Runoff, Runoff event, Same event, Samples sieved, Sediment, Sediment budget, Sediment budgets, Sediment concentration, Sediment delivery, Sediment mass, Sediment size distribution, Sediment transport, Sedimentation, Sedimentation process, Shape fraction, Shape fractions, Silt loam aggregates, Simulation, Size distribution, Size distributions, Size fraction, Size fractions, Size range, Size selectivity, Small litter dams, Small sticks, Soil fragments, Soil research, Soil science society, Soil surface, Soil surface conditions, Standard errors, Stream management, Strs, Surface water, Temporal evolution, Total mass, Total sediment mass, Total sediment masses, Tree belt, Tree belt area, Tree belt plot, Tree belt table, Tree belts, Tree litter, Tree tops, Undersize, Undersize fraction, Vegetative, Velocity distribution, Velocity distributions, Volume percentage, Volume proportion, Weight diameter, Whole system, Wide range, Woody buffer.
Abstract
Restoring belts of perennial vegetation in landscapes is widely recognized as a measure of improving landscape function. While there have been many studies of the transport of pollutants through grass filter strips, few have addressed sediment related processes through restored tree belts. In order to identify these processes and quantify their relative contribution to sediment trapping, a series of rainfall simulations was conducted on a 600 m2 hillslope comprising a pasture upslope of a 15 year old tree belt. Although the simulated events were extreme (average recurrence intervals ∼10 and 50 yr), the trapping efficiency of the tree belt was very high: at least 94% of the total mass of sediments was captured. All the size fractions were trapped with a minimum Sediment Trapping Ratio (STR) of 91% for the medium‐sized fragments. Fractions < 1·3 µm and > 182 µm were totally captured (STR = 100%). Through the joint analysis of sediment budgets and soil surface conditions, we identified different trapping processes. The main trapping process is the sedimentation (at least 62% of trapped sediment mass) with deposits in the backwater and as micro‐terraces within the tree belt. Modelling results show that the coarsest size fractions above 75 µm are preferentially deposited. Joint infiltration of water and sediments has also been noticed, however, this process alone cannot explain the selective trapping of the finest fractions. We suggest that the finest fractions transported by the overland flow may be trapped by adsorption on the abundant litter present within the tree belt. Copyright © 2008 John Wiley & Sons, Ltd.
Url:
DOI: 10.1002/hyp.6957
Affiliations:
- Australie, France
- Centre-Val de Loire, Midi-Pyrénées, Occitanie (région administrative), Région Centre
- Olivet, Toulouse
- Université Toulouse III - Paul Sabatier
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Ellis</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Land and Water, GPO Box 1666, Canberra ACT 2601</wicri:regionArea><wicri:noRegion>Canberra ACT 2601</wicri:noRegion></affiliation></author><author><name sortKey="Hairsine, Peter B" sort="Hairsine, Peter B" uniqKey="Hairsine P" first="Peter B." last="Hairsine">Peter B. Hairsine</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Land and Water, GPO Box 1666, Canberra ACT 2601</wicri:regionArea><wicri:noRegion>Canberra ACT 2601</wicri:noRegion></affiliation></author><author><name sortKey="Tongway, David J" sort="Tongway, David J" uniqKey="Tongway D" first="David J." last="Tongway">David J. Tongway</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Sustainable Ecosystems, GPO Box 284, Canberra City ACT 2601</wicri:regionArea><wicri:noRegion>Canberra City ACT 2601</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Hydrological Processes</title><title level="j" type="alt">HYDROLOGICAL PROCESSES</title><idno type="ISSN">0885-6087</idno><idno type="eISSN">1099-1085</idno><imprint><biblScope unit="vol">22</biblScope><biblScope unit="issue">17</biblScope><biblScope unit="page" from="3523">3523</biblScope><biblScope unit="page" to="3534">3534</biblScope><biblScope unit="page-count">12</biblScope><publisher>John Wiley & Sons, Ltd.</publisher><pubPlace>Chichester, UK</pubPlace><date type="published" when="2008-08-15">2008-08-15</date></imprint><idno type="ISSN">0885-6087</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-6087</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption</term><term>Aggregate size distribution</term><term>Aggregate size distributions</term><term>Agricultural engineers</term><term>Agricultural lands</term><term>America journal</term><term>American society</term><term>Asds</term><term>Australia</term><term>Australian journal</term><term>Backwater</term><term>Backwater sedimentation</term><term>Bare soil zone</term><term>Biological activity</term><term>Biological macropores</term><term>Buffer zone</term><term>Bulk densities</term><term>Bulk density</term><term>Catchment</term><term>Catchment hydrology</term><term>Clay fraction</term><term>Coarse size distribution</term><term>Coarse size fractions</term><term>Coarsest</term><term>Coarsest size fractions</term><term>Cooperative research centre</term><term>Copyright</term><term>Dabney</term><term>Different processes</term><term>Dillaha</term><term>Dosskey</term><term>Earth surface processes</term><term>Elli</term><term>Environmental management</term><term>Environmental quality</term><term>Error bars</term><term>Exceptional rainstorm</term><term>Experimental area</term><term>Experimental conditions</term><term>Experimental design</term><term>Experimental plot</term><term>Experimental setup</term><term>Experimental site</term><term>Extreme conditions</term><term>Forested</term><term>Forested buffers</term><term>Fragment</term><term>Ghadiri</term><term>Grass strip</term><term>Grass strips</term><term>Hairsine</term><term>High proportion</term><term>Higher proportion</term><term>Hydraulic</term><term>Hydraulic parameters</term><term>Hydraulic roughness</term><term>Hydrol</term><term>Hydrological processes</term><term>Hydrology</term><term>Image analysis</term><term>Intense rainfall conditions</term><term>Intense rainfall events</term><term>John wiley sons</term><term>Laser</term><term>Laser diffraction measurement</term><term>Laser diffraction sizer</term><term>Leaf fragments</term><term>Litter</term><term>Litter barrier</term><term>Litter dams</term><term>Litter debris</term><term>Loch</term><term>Lter</term><term>Lter strip</term><term>Lter strips</term><term>Macropores</term><term>Mineral soil fragments</term><term>Nest fractions</term><term>Nest fragments</term><term>Nest soil fragments</term><term>New South Wales</term><term>Organic debris</term><term>Oversize</term><term>Oversize fractions</term><term>Pasture area</term><term>Pasture plot</term><term>Plant debris</term><term>Ponded water</term><term>Qinput qoutput</term><term>Rainfall</term><term>Rainfall event</term><term>Rainfall events</term><term>Rainfall intensity</term><term>Rainfall simulation</term><term>Rainfall simulations</term><term>Rainfall simulator</term><term>Regent instrument</term><term>Relative contribution</term><term>Riparian</term><term>Riparian forest</term><term>Runoff</term><term>Runoff event</term><term>Same event</term><term>Samples sieved</term><term>Sediment</term><term>Sediment budget</term><term>Sediment budgets</term><term>Sediment concentration</term><term>Sediment delivery</term><term>Sediment mass</term><term>Sediment size distribution</term><term>Sediment transport</term><term>Sedimentation</term><term>Sedimentation process</term><term>Shape fraction</term><term>Shape fractions</term><term>Silt loam aggregates</term><term>Simulation</term><term>Size distribution</term><term>Size distributions</term><term>Size fraction</term><term>Size fractions</term><term>Size range</term><term>Size selectivity</term><term>Small litter dams</term><term>Small sticks</term><term>Soil fragments</term><term>Soil research</term><term>Soil science society</term><term>Soil surface</term><term>Soil surface conditions</term><term>Standard errors</term><term>Stream management</term><term>Strs</term><term>Surface water</term><term>Temporal evolution</term><term>Total mass</term><term>Total sediment mass</term><term>Total sediment masses</term><term>Tree belt</term><term>Tree belt area</term><term>Tree belt plot</term><term>Tree belt table</term><term>Tree belts</term><term>Tree litter</term><term>Tree tops</term><term>Undersize</term><term>Undersize fraction</term><term>Vegetative</term><term>Velocity distribution</term><term>Velocity distributions</term><term>Volume percentage</term><term>Volume proportion</term><term>Weight diameter</term><term>Whole system</term><term>Wide range</term><term>Woody buffer</term><term>adsorption</term><term>alluvium</term><term>coarse-grained materials</term><term>digital simulation</term><term>discharge</term><term>flow</term><term>fragments</term><term>hydraulics</term><term>infiltration</term><term>models</term><term>organic materials</term><term>pollutants</term><term>pollution</term><term>porosity</term><term>rain water</term><term>rainfall</term><term>runoff</term><term>size distribution</term><term>soils</term><term>suspended materials</term><term>terraces</term><term>transport</term><term>trees</term><term>vegetation</term><term>vegetation effects</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Adsorption</term><term>Alluvion</term><term>Arbre</term><term>Australie</term><term>Distribution dimension</term><term>Débit</term><term>Eau pluie</term><term>Ecoulement</term><term>Effet végétation</term><term>Fraction grossière</term><term>Fragment</term><term>Hydraulique</term><term>Infiltration</term><term>Matière en suspension</term><term>Matière organique</term><term>Modèle</term><term>Nouvelle Galles du Sud</term><term>Pluie</term><term>Polluant</term><term>Pollution</term><term>Porosité</term><term>Ruissellement</term><term>Simulation numérique</term><term>Sol</term><term>Terrasse</term><term>Transport</term><term>Végétation</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Adsorption</term><term>Aggregate size distribution</term><term>Aggregate size distributions</term><term>Agricultural engineers</term><term>Agricultural lands</term><term>America journal</term><term>American society</term><term>Asds</term><term>Australian journal</term><term>Backwater</term><term>Backwater sedimentation</term><term>Bare soil zone</term><term>Biological activity</term><term>Biological macropores</term><term>Buffer zone</term><term>Bulk densities</term><term>Bulk density</term><term>Catchment</term><term>Catchment hydrology</term><term>Clay fraction</term><term>Coarse size distribution</term><term>Coarse size fractions</term><term>Coarsest</term><term>Coarsest size fractions</term><term>Cooperative research centre</term><term>Copyright</term><term>Dabney</term><term>Different processes</term><term>Dillaha</term><term>Dosskey</term><term>Earth surface processes</term><term>Elli</term><term>Environmental management</term><term>Environmental quality</term><term>Error bars</term><term>Exceptional rainstorm</term><term>Experimental area</term><term>Experimental conditions</term><term>Experimental design</term><term>Experimental plot</term><term>Experimental setup</term><term>Experimental site</term><term>Extreme conditions</term><term>Forested</term><term>Forested buffers</term><term>Fragment</term><term>Ghadiri</term><term>Grass strip</term><term>Grass strips</term><term>Hairsine</term><term>High proportion</term><term>Higher proportion</term><term>Hydraulic</term><term>Hydraulic parameters</term><term>Hydraulic roughness</term><term>Hydrol</term><term>Hydrological processes</term><term>Hydrology</term><term>Image analysis</term><term>Intense rainfall conditions</term><term>Intense rainfall events</term><term>John wiley sons</term><term>Laser</term><term>Laser diffraction measurement</term><term>Laser diffraction sizer</term><term>Leaf fragments</term><term>Litter</term><term>Litter barrier</term><term>Litter dams</term><term>Litter debris</term><term>Loch</term><term>Lter</term><term>Lter strip</term><term>Lter strips</term><term>Macropores</term><term>Mineral soil fragments</term><term>Nest fractions</term><term>Nest fragments</term><term>Nest soil fragments</term><term>Organic debris</term><term>Oversize</term><term>Oversize fractions</term><term>Pasture area</term><term>Pasture plot</term><term>Plant debris</term><term>Ponded water</term><term>Qinput qoutput</term><term>Rainfall</term><term>Rainfall event</term><term>Rainfall events</term><term>Rainfall intensity</term><term>Rainfall simulation</term><term>Rainfall simulations</term><term>Rainfall simulator</term><term>Regent instrument</term><term>Relative contribution</term><term>Riparian</term><term>Riparian forest</term><term>Runoff</term><term>Runoff event</term><term>Same event</term><term>Samples sieved</term><term>Sediment</term><term>Sediment budget</term><term>Sediment budgets</term><term>Sediment concentration</term><term>Sediment delivery</term><term>Sediment mass</term><term>Sediment size distribution</term><term>Sediment transport</term><term>Sedimentation</term><term>Sedimentation process</term><term>Shape fraction</term><term>Shape fractions</term><term>Silt loam aggregates</term><term>Simulation</term><term>Size distribution</term><term>Size distributions</term><term>Size fraction</term><term>Size fractions</term><term>Size range</term><term>Size selectivity</term><term>Small litter dams</term><term>Small sticks</term><term>Soil fragments</term><term>Soil research</term><term>Soil science society</term><term>Soil surface</term><term>Soil surface conditions</term><term>Standard errors</term><term>Stream management</term><term>Strs</term><term>Surface water</term><term>Temporal evolution</term><term>Total mass</term><term>Total sediment mass</term><term>Total sediment masses</term><term>Tree belt</term><term>Tree belt area</term><term>Tree belt plot</term><term>Tree belt table</term><term>Tree belts</term><term>Tree litter</term><term>Tree tops</term><term>Undersize</term><term>Undersize fraction</term><term>Vegetative</term><term>Velocity distribution</term><term>Velocity distributions</term><term>Volume percentage</term><term>Volume proportion</term><term>Weight diameter</term><term>Whole system</term><term>Wide range</term><term>Woody buffer</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Australie</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Arbre</term><term>Droit d'auteur</term><term>Hydrologie</term><term>Polluant</term><term>Pollution</term><term>Simulation</term><term>Eau superficielle</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Restoring belts of perennial vegetation in landscapes is widely recognized as a measure of improving landscape function. While there have been many studies of the transport of pollutants through grass filter strips, few have addressed sediment related processes through restored tree belts. In order to identify these processes and quantify their relative contribution to sediment trapping, a series of rainfall simulations was conducted on a 600 m2 hillslope comprising a pasture upslope of a 15 year old tree belt. Although the simulated events were extreme (average recurrence intervals ∼10 and 50 yr), the trapping efficiency of the tree belt was very high: at least 94% of the total mass of sediments was captured. All the size fractions were trapped with a minimum Sediment Trapping Ratio (STR) of 91% for the medium‐sized fragments. Fractions < 1·3 µm and > 182 µm were totally captured (STR = 100%). Through the joint analysis of sediment budgets and soil surface conditions, we identified different trapping processes. The main trapping process is the sedimentation (at least 62% of trapped sediment mass) with deposits in the backwater and as micro‐terraces within the tree belt. Modelling results show that the coarsest size fractions above 75 µm are preferentially deposited. Joint infiltration of water and sediments has also been noticed, however, this process alone cannot explain the selective trapping of the finest fractions. We suggest that the finest fractions transported by the overland flow may be trapped by adsorption on the abundant litter present within the tree belt. Copyright © 2008 John Wiley & Sons, Ltd.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Centre-Val de Loire</li><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li><li>Région Centre</li></region><settlement><li>Olivet</li><li>Toulouse</li></settlement><orgName><li>Université Toulouse III - Paul Sabatier</li></orgName></list><tree><country name="France"><region name="Centre-Val de Loire"><name sortKey="Leguedois, Sophie" sort="Leguedois, Sophie" uniqKey="Leguedois S" first="Sophie" last="Leguédois">Sophie Leguédois</name></region><name sortKey="Leguedois, Sophie" sort="Leguedois, Sophie" uniqKey="Leguedois S" first="Sophie" last="Leguédois">Sophie Leguédois</name><name sortKey="Leguedois, Sophie" sort="Leguedois, Sophie" uniqKey="Leguedois S" first="Sophie" last="Leguédois">Sophie Leguédois</name><name sortKey="Leguedois, Sophie" sort="Leguedois, Sophie" uniqKey="Leguedois S" first="Sophie" last="Leguédois">Sophie Leguédois</name></country><country name="Australie"><noRegion><name sortKey="Ellis, Tim W" sort="Ellis, Tim W" uniqKey="Ellis T" first="Tim W." last="Ellis">Tim W. Ellis</name></noRegion><name sortKey="Hairsine, Peter B" sort="Hairsine, Peter B" uniqKey="Hairsine P" first="Peter B." last="Hairsine">Peter B. Hairsine</name><name sortKey="Tongway, David J" sort="Tongway, David J" uniqKey="Tongway D" first="David J." last="Tongway">David J. Tongway</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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