Forest floor leachate fluxes under six different tree species on a metal contaminated site
Identifieur interne : 000263 ( Main/Exploration ); précédent : 000262; suivant : 000264Forest floor leachate fluxes under six different tree species on a metal contaminated site
Auteurs : Lotte Van Nevel [Belgique] ; Jan Mertens [Belgique] ; An De Schrijver [Belgique] ; Lander Baeten [Belgique] ; Stefaan De Neve [Belgique] ; Filip M. G. Tack [Belgique] ; Erik Meers [Belgique] ; Kris Verheyen [Belgique]Source :
- Science of the total environment [ 0048-9697 ] ; 2013.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Métal lourd, Cadmium, Zinc.
English descriptors
- KwdEn :
Abstract
Trees play an important role in the biogeochemical cycling of metals, although the influence of different tree species on the mobilization of metals is not yet clear. This study examined effects of six tree species on fluxes of Cd, Zn, DOC, H+ and base cations in forest floor leachates on a metal polluted site in Belgium. Forest floor leachates were sampled with zero-tension lysimeters in a 12-year-old post-agricultural forest on a sandy soil. The tree species included were silver birch (Betula pendula), oak (Quercus robur and Q. petraea), black locust (Robinia pseudoacacia), aspen (Populus tremula), Scots pine (Pinus sylvestris) and Douglas fir (Pseudotsuga menziesii). We show that total Cd fluxes in forest floor leachate under aspen were slightly higher than those in the other species' leachates, yet the relative differences between the species were considerably smaller when looking at dissolved Cd fluxes. The latter was probably caused by extremely low H+ amounts leaching from aspen's forest floor. No tree species effect was found for Zn leachate fluxes. We expected higher metal leachate fluxes under aspen as its leaf litter was significantly contaminated with Cd and Zn. We propose that the low amounts of Cd and Zn leaching under aspen's forest floor were possibly caused by high activity of soil biota, for example burrowing earthworms. Furthermore, our results reveal that Scots pine and oak were characterized by high H+ and DOC fluxes as well as low base cation fluxes in their forest floor leachates, implying that those species might enhance metal mobilization in the soil profile and thus bear a potential risk for belowground metal dispersion.
Affiliations:
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wicri:level="4"><inist:fA14 i1="01"><s1>Forest & Nature Lab, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267</s1><s2>9090 Melle</s2><s3>BEL</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>Belgique</country><wicri:noRegion>9090 Melle</wicri:noRegion><orgName type="university">Université de Gand</orgName><placeName><settlement type="city">Gand</settlement><region>Région flamande</region><region type="district" nuts="2">Province de Flandre-Orientale</region></placeName></affiliation></author><author><name sortKey="Mertens, Jan" sort="Mertens, Jan" uniqKey="Mertens J" first="Jan" last="Mertens">Jan Mertens</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Faculty of Applied Bioscience Engineering, University College Ghent, Ghent University Association, Schoonmeersstraat 52</s1><s2>9000 Ghent</s2><s3>BEL</s3><sZ>2 aut.</sZ></inist:fA14><country>Belgique</country><placeName><region type="province" 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wicri:level="4"><inist:fA14 i1="01"><s1>Forest & Nature Lab, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267</s1><s2>9090 Melle</s2><s3>BEL</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>Belgique</country><wicri:noRegion>9090 Melle</wicri:noRegion><orgName type="university">Université de Gand</orgName><placeName><settlement type="city">Gand</settlement><region>Région flamande</region><region type="district" nuts="2">Province de Flandre-Orientale</region></placeName></affiliation></author><author><name sortKey="De Neve, Stefaan" sort="De Neve, Stefaan" uniqKey="De Neve S" first="Stefaan" last="De Neve">Stefaan De Neve</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Department of Soil Management and Soil Care, Ghent University, Coupure Links 653</s1><s2>9000 Ghent</s2><s3>BEL</s3><sZ>5 aut.</sZ></inist:fA14><country>Belgique</country><placeName><region type="province" nuts="2">Province de Flandre-Orientale</region><settlement type="city">Gand</settlement></placeName><orgName type="university">Université de Gand</orgName></affiliation></author><author><name sortKey="Tack, Filip M G" sort="Tack, Filip M G" uniqKey="Tack F" first="Filip M. G." last="Tack">Filip M. G. Tack</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>Laboratory for Analytical Chemistry and Applied Ecochemistry, Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653</s1><s2>9000 Ghent</s2><s3>BEL</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><region type="province" nuts="2">Province de Flandre-Orientale</region><settlement type="city">Gand</settlement></placeName><orgName type="university">Université de Gand</orgName></affiliation></author><author><name sortKey="Meers, Erik" sort="Meers, Erik" uniqKey="Meers E" first="Erik" last="Meers">Erik Meers</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>Laboratory for Analytical Chemistry and Applied Ecochemistry, Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653</s1><s2>9000 Ghent</s2><s3>BEL</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><region type="province" nuts="2">Province de Flandre-Orientale</region><settlement type="city">Gand</settlement></placeName><orgName type="university">Université de Gand</orgName></affiliation></author><author><name sortKey="Verheyen, Kris" sort="Verheyen, Kris" uniqKey="Verheyen K" first="Kris" last="Verheyen">Kris Verheyen</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Forest & Nature Lab, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267</s1><s2>9090 Melle</s2><s3>BEL</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>Belgique</country><wicri:noRegion>9090 Melle</wicri:noRegion><orgName type="university">Université de Gand</orgName><placeName><settlement type="city">Gand</settlement><region>Région flamande</region><region type="district" nuts="2">Province de Flandre-Orientale</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Science of the total environment</title><title level="j" type="abbreviated">Sci. total environ.</title><idno type="ISSN">0048-9697</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Science of the total environment</title><title level="j" type="abbreviated">Sci. total environ.</title><idno type="ISSN">0048-9697</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Betula pendula</term><term>Bioremediation</term><term>Cadmium</term><term>Decontamination</term><term>Dissolved organic carbon</term><term>Forest soil</term><term>Heavy metal</term><term>Leachate</term><term>Phytoremediation</term><term>Phytostabilization</term><term>Pinus sylvestris</term><term>Populus tremula</term><term>Pseudotsuga menziesii</term><term>Quercus petraea</term><term>Quercus robur</term><term>Robinia pseudoacacia</term><term>Trace element</term><term>Zinc</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Sol forestier</term><term>Lessivat</term><term>Betula pendula</term><term>Métal lourd</term><term>Cadmium</term><term>Elément trace</term><term>Carbone organique dissous</term><term>Quercus robur</term><term>Phytostabilisation</term><term>Quercus petraea</term><term>Robinia pseudoacacia</term><term>Populus tremula</term><term>Pinus sylvestris</term><term>Pseudotsuga menziesii</term><term>Zinc</term><term>Phytoremédiation</term><term>Bioremédiation</term><term>Décontamination</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Métal lourd</term><term>Cadmium</term><term>Zinc</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Trees play an important role in the biogeochemical cycling of metals, although the influence of different tree species on the mobilization of metals is not yet clear. This study examined effects of six tree species on fluxes of Cd, Zn, DOC, H<sup>+</sup> and base cations in forest floor leachates on a metal polluted site in Belgium. Forest floor leachates were sampled with zero-tension lysimeters in a 12-year-old post-agricultural forest on a sandy soil. The tree species included were silver birch (Betula pendula), oak (Quercus robur and Q. petraea), black locust (Robinia pseudoacacia), aspen (Populus tremula), Scots pine (Pinus sylvestris) and Douglas fir (Pseudotsuga menziesii). We show that total Cd fluxes in forest floor leachate under aspen were slightly higher than those in the other species' leachates, yet the relative differences between the species were considerably smaller when looking at dissolved Cd fluxes. The latter was probably caused by extremely low H<sup>+</sup> amounts leaching from aspen's forest floor. No tree species effect was found for Zn leachate fluxes. We expected higher metal leachate fluxes under aspen as its leaf litter was significantly contaminated with Cd and Zn. We propose that the low amounts of Cd and Zn leaching under aspen's forest floor were possibly caused by high activity of soil biota, for example burrowing earthworms. Furthermore, our results reveal that Scots pine and oak were characterized by high H<sup>+</sup> and DOC fluxes as well as low base cation fluxes in their forest floor leachates, implying that those species might enhance metal mobilization in the soil profile and thus bear a potential risk for belowground metal dispersion.</div></front></TEI><affiliations><list><country><li>Belgique</li></country><region><li>Province de Flandre-Orientale</li><li>Région flamande</li></region><settlement><li>Gand</li></settlement><orgName><li>Université de Gand</li></orgName></list><tree><country name="Belgique"><region name="Région flamande"><name sortKey="Van Nevel, Lotte" sort="Van Nevel, Lotte" uniqKey="Van Nevel L" first="Lotte" last="Van Nevel">Lotte Van Nevel</name></region><name sortKey="Baeten, Lander" sort="Baeten, Lander" uniqKey="Baeten L" first="Lander" last="Baeten">Lander Baeten</name><name sortKey="De Neve, Stefaan" sort="De Neve, Stefaan" uniqKey="De Neve S" first="Stefaan" last="De Neve">Stefaan De Neve</name><name sortKey="De Schrijver, An" sort="De Schrijver, An" uniqKey="De Schrijver A" first="An" last="De Schrijver">An De Schrijver</name><name sortKey="Meers, Erik" sort="Meers, Erik" uniqKey="Meers E" first="Erik" last="Meers">Erik Meers</name><name sortKey="Mertens, Jan" sort="Mertens, Jan" uniqKey="Mertens J" first="Jan" last="Mertens">Jan Mertens</name><name sortKey="Tack, Filip M G" sort="Tack, Filip M G" uniqKey="Tack F" first="Filip M. G." last="Tack">Filip M. G. Tack</name><name sortKey="Verheyen, Kris" sort="Verheyen, Kris" uniqKey="Verheyen K" first="Kris" last="Verheyen">Kris Verheyen</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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