Carbon distribution in top‐ and subsoil horizons of two contrasting Andisols under pasture or forest
Identifieur interne : 005715 ( Main/Exploration ); précédent : 005714; suivant : 005716Carbon distribution in top‐ and subsoil horizons of two contrasting Andisols under pasture or forest
Auteurs : M. Panichini [Chili] ; F. Matus [Chili] ; M. L. Mora [Chili] ; R. Godoy ; N. S. Bolan [Australie] ; C. Rumpel [France] ; F. Borie [Chili]Source :
- European Journal of Soil Science [ 1351-0754 ] ; 2012-10.
Descripteurs français
- Pascal (Inist)
- Wicri :
- geographic : Chili.
- topic : Carbone, Forêt, Science des sols.
English descriptors
- KwdEn :
- Acid oxalate extractable, Allophane, Allophane content, Allophanic soils, America journal, Amorphous clay minerals, Andisols, Annual precipitation, Annual temperature, Atomic ratio, Authors journal compilation, Biology fertility, British society, Bulk density, Carbon pools, Centrifuge tube, Chemical properties, Chemical soil fractions, Chile, Climate conditions, Coarse sand, Conceptual model, Demineralized water, Density fractionation, Density fractions, Earth science, European journal, External factors, Forest soil, Forest soil samples, Forest soils, Fractionation, Garrido matus, Geoderma, Humus complexes, Huygens, Isotope, Isotopic composition, Large ratio, Matus, Mineral fraction, Mineral phase, Nancial support, Natural abundance, Nothofagus pumilio, Oating particles, Opom, Opom formation, Organic carbon, Organic matter, Particulate, Pasture, Pasture andisols, Pasture soil, Pasture soil samples, Pasture soils, Physical fraction, Physical fractionation, Physical fractions, Pristine, Pyrophosphate, Pyrophosphate extractable, Pyrophosphate extraction, Rain forest, Recursos naturales, Silty loam, Similar trend, Soil, Soil aggregates, Soil carbon, Soil carbon distribution, Soil depth, Soil depths, Soil horizons, Soil properties, Soil sample, Soil science, Soil science society, Soil soil, Soil survey staff, Soil texture, Southern chile, Stabilization, Stabilization mechanism, Stable isotopes, Standard deviation, Strong relationship, Subsoil, Subsoil horizons, Suelos volc, Topsoil, Total mass, Total soil, Tropical podzols, Vegetation type, Volcanic, Volcanic soils, Whole soil, carbon, distribution, forests.
- Teeft :
- Acid oxalate extractable, Allophane, Allophane content, Allophanic soils, America journal, Amorphous clay minerals, Andisols, Annual precipitation, Annual temperature, Atomic ratio, Authors journal compilation, Biology fertility, British society, Bulk density, Carbon pools, Centrifuge tube, Chemical properties, Chemical soil fractions, Chile, Climate conditions, Coarse sand, Conceptual model, Demineralized water, Density fractionation, Density fractions, European journal, External factors, Forest soil, Forest soil samples, Forest soils, Fractionation, Garrido matus, Geoderma, Humus complexes, Huygens, Isotope, Isotopic composition, Large ratio, Matus, Mineral fraction, Mineral phase, Nancial support, Natural abundance, Nothofagus pumilio, Oating particles, Opom, Opom formation, Organic carbon, Organic matter, Particulate, Pasture, Pasture andisols, Pasture soil, Pasture soil samples, Pasture soils, Physical fraction, Physical fractionation, Physical fractions, Pristine, Pyrophosphate, Pyrophosphate extractable, Pyrophosphate extraction, Rain forest, Recursos naturales, Silty loam, Similar trend, Soil, Soil aggregates, Soil carbon, Soil carbon distribution, Soil depth, Soil depths, Soil horizons, Soil properties, Soil sample, Soil science, Soil science society, Soil soil, Soil survey staff, Soil texture, Southern chile, Stabilization, Stabilization mechanism, Stable isotopes, Standard deviation, Strong relationship, Subsoil, Subsoil horizons, Suelos volc, Topsoil, Total mass, Total soil, Tropical podzols, Vegetation type, Volcanic, Volcanic soils, Whole soil.
Abstract
Volcanic ash soils display distinctive morphological, physical and chemical properties and they contain several times more organic matter than non‐volcanic soils. So far, there are few studies of soil organic matter (SOM) distribution in different chemically and physically protected carbon pools of soil horizons of volcanic soils. The aim of this study was to determine the SOM distribution (and its δ13C and δ15N composition) in different chemical and physical fractions at various depth horizons of two Andisols under pasture or rain forest in southern Chile. We used the amount of humus‐complexes (Cp) extracted with Na pyrophosphate as a measure of C stabilized by aluminum (Alp) and iron (Fep) in combination with density fractionation to separate particulate organic matter as free (fPOM), occluded (oPOM) and organic matter associated with the mineral fraction (MF). The results showed that soil SOM stock (0–40 cm) in the pasture soil was 166 Mg C ha−1 (11.7 Mg N ha−1) and in the forest soil 100 Mg C ha−1 (4.1 Mg N ha−1). The SOM variation was explained largely by the differences in Cp, Alp and Fep. About 34% of total soil C was found as Cp in both oPOM and MF in the topsoil, whereas 33–53% was found in the subsoil horizons. The oPOM fraction was more important in the forest soil and generally decreased in the subsoil where these fractions were enriched with δ13C and δ15N. Our results emphasize the importance of the humus complex and oPOM formation as the SOM stabilization mechanism in the forest Andisol, whereas under pasture organo‐mineral interaction, including the formation of humic‐metal complexes, is the most important stabilization mechanism. A conceptual model is lacking to demonstrate the major areas of uncertainty within known mechanisms and factors that explain the distribution of SOM through soil profiles in Andisols.
Url:
DOI: 10.1111/j.1365-2389.2012.01488.x
Affiliations:
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Panichini</name><affiliation wicri:level="1"><country xml:lang="fr">Chili</country><wicri:regionArea>Programa de Doctorado en Ciencias de Recursos Naturales, Departamento de Ciencias Químicas y Recursos Naturales Universidad de la Frontera, Temuco</wicri:regionArea><wicri:noRegion>Temuco</wicri:noRegion></affiliation></author><author><name sortKey="Matus, F" sort="Matus, F" uniqKey="Matus F" first="F." last="Matus">F. Matus</name><affiliation wicri:level="1"><country xml:lang="fr">Chili</country><wicri:regionArea>Programa de Doctorado en Ciencias de Recursos Naturales, Departamento de Ciencias Químicas y Recursos Naturales Universidad de la Frontera, Temuco</wicri:regionArea><wicri:noRegion>Temuco</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Chili</country><wicri:regionArea>Scientific and Technological Bioresource Nucleus (BIOREN‐UFRO), Universidad de La Frontera, Av. Francisco Salazar 01145, PO Box 54‐D, Temuco</wicri:regionArea><wicri:noRegion>Temuco</wicri:noRegion></affiliation></author><author><name sortKey="Mora, M L" sort="Mora, M L" uniqKey="Mora M" first="M. L." last="Mora">M. L. Mora</name><affiliation wicri:level="1"><country xml:lang="fr">Chili</country><wicri:regionArea>Programa de Doctorado en Ciencias de Recursos Naturales, Departamento de Ciencias Químicas y Recursos Naturales Universidad de la Frontera, Temuco</wicri:regionArea><wicri:noRegion>Temuco</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Chili</country><wicri:regionArea>Scientific and Technological Bioresource Nucleus (BIOREN‐UFRO), Universidad de La Frontera, Av. Francisco Salazar 01145, PO Box 54‐D, Temuco</wicri:regionArea><wicri:noRegion>Temuco</wicri:noRegion></affiliation></author><author><name sortKey="Godoy, R" sort="Godoy, R" uniqKey="Godoy R" first="R." last="Godoy">R. Godoy</name><affiliation><wicri:noCountry code="subField">Valdivia‐Chile</wicri:noCountry></affiliation></author><author><name sortKey="Bolan, N S" sort="Bolan, N S" uniqKey="Bolan N" first="N. S." last="Bolan">N. S. Bolan</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Division of Information Technology, Engineering and the Environment, Centre for Environmental Risk Assessment and Remediation, University of South Australia, Adelaide, SA 5059</wicri:regionArea><wicri:noRegion>SA 5059</wicri:noRegion></affiliation></author><author><name sortKey="Rumpel, C" sort="Rumpel, C" uniqKey="Rumpel C" first="C." last="Rumpel">C. 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Francisco Salazar 01145, PO Box 54‐D, Temuco</wicri:regionArea><wicri:noRegion>Temuco</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Chili</country></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">European Journal of Soil Science</title><title level="j" type="sub">ISMOM – soil interfaces in a changing world</title><title level="j" type="alt">EUROPEAN JOURNAL OF SOIL SCIENCE</title><idno type="ISSN">1351-0754</idno><idno type="eISSN">1365-2389</idno><imprint><biblScope unit="vol">63</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="616">616</biblScope><biblScope unit="page" to="624">624</biblScope><biblScope unit="page-count">9</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2012-10">2012-10</date></imprint><idno type="ISSN">1351-0754</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1351-0754</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acid oxalate extractable</term><term>Allophane</term><term>Allophane content</term><term>Allophanic soils</term><term>America journal</term><term>Amorphous clay minerals</term><term>Andisols</term><term>Annual precipitation</term><term>Annual temperature</term><term>Atomic ratio</term><term>Authors journal compilation</term><term>Biology fertility</term><term>British society</term><term>Bulk density</term><term>Carbon pools</term><term>Centrifuge tube</term><term>Chemical properties</term><term>Chemical soil fractions</term><term>Chile</term><term>Climate conditions</term><term>Coarse sand</term><term>Conceptual model</term><term>Demineralized water</term><term>Density fractionation</term><term>Density fractions</term><term>Earth science</term><term>European journal</term><term>External factors</term><term>Forest soil</term><term>Forest soil samples</term><term>Forest soils</term><term>Fractionation</term><term>Garrido matus</term><term>Geoderma</term><term>Humus complexes</term><term>Huygens</term><term>Isotope</term><term>Isotopic composition</term><term>Large ratio</term><term>Matus</term><term>Mineral fraction</term><term>Mineral phase</term><term>Nancial support</term><term>Natural abundance</term><term>Nothofagus pumilio</term><term>Oating particles</term><term>Opom</term><term>Opom formation</term><term>Organic carbon</term><term>Organic matter</term><term>Particulate</term><term>Pasture</term><term>Pasture andisols</term><term>Pasture soil</term><term>Pasture soil samples</term><term>Pasture soils</term><term>Physical fraction</term><term>Physical fractionation</term><term>Physical fractions</term><term>Pristine</term><term>Pyrophosphate</term><term>Pyrophosphate extractable</term><term>Pyrophosphate extraction</term><term>Rain forest</term><term>Recursos naturales</term><term>Silty loam</term><term>Similar trend</term><term>Soil</term><term>Soil aggregates</term><term>Soil carbon</term><term>Soil carbon distribution</term><term>Soil depth</term><term>Soil depths</term><term>Soil horizons</term><term>Soil properties</term><term>Soil sample</term><term>Soil science</term><term>Soil science society</term><term>Soil soil</term><term>Soil survey staff</term><term>Soil texture</term><term>Southern chile</term><term>Stabilization</term><term>Stabilization mechanism</term><term>Stable isotopes</term><term>Standard deviation</term><term>Strong relationship</term><term>Subsoil</term><term>Subsoil horizons</term><term>Suelos volc</term><term>Topsoil</term><term>Total mass</term><term>Total soil</term><term>Tropical podzols</term><term>Vegetation type</term><term>Volcanic</term><term>Volcanic soils</term><term>Whole soil</term><term>carbon</term><term>distribution</term><term>forests</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Andisol</term><term>Carbone</term><term>Distribution</term><term>Forêt</term><term>Pâture</term><term>Science du sol</term><term>Science terre</term><term>Sous sol</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Acid oxalate extractable</term><term>Allophane</term><term>Allophane content</term><term>Allophanic soils</term><term>America journal</term><term>Amorphous clay minerals</term><term>Andisols</term><term>Annual precipitation</term><term>Annual temperature</term><term>Atomic ratio</term><term>Authors journal compilation</term><term>Biology fertility</term><term>British society</term><term>Bulk density</term><term>Carbon pools</term><term>Centrifuge tube</term><term>Chemical properties</term><term>Chemical soil fractions</term><term>Chile</term><term>Climate conditions</term><term>Coarse sand</term><term>Conceptual model</term><term>Demineralized water</term><term>Density fractionation</term><term>Density fractions</term><term>European journal</term><term>External factors</term><term>Forest soil</term><term>Forest soil samples</term><term>Forest soils</term><term>Fractionation</term><term>Garrido matus</term><term>Geoderma</term><term>Humus complexes</term><term>Huygens</term><term>Isotope</term><term>Isotopic composition</term><term>Large ratio</term><term>Matus</term><term>Mineral fraction</term><term>Mineral phase</term><term>Nancial support</term><term>Natural abundance</term><term>Nothofagus pumilio</term><term>Oating particles</term><term>Opom</term><term>Opom formation</term><term>Organic carbon</term><term>Organic matter</term><term>Particulate</term><term>Pasture</term><term>Pasture andisols</term><term>Pasture soil</term><term>Pasture soil samples</term><term>Pasture soils</term><term>Physical fraction</term><term>Physical fractionation</term><term>Physical fractions</term><term>Pristine</term><term>Pyrophosphate</term><term>Pyrophosphate extractable</term><term>Pyrophosphate extraction</term><term>Rain forest</term><term>Recursos naturales</term><term>Silty loam</term><term>Similar trend</term><term>Soil</term><term>Soil aggregates</term><term>Soil carbon</term><term>Soil carbon distribution</term><term>Soil depth</term><term>Soil depths</term><term>Soil horizons</term><term>Soil properties</term><term>Soil sample</term><term>Soil science</term><term>Soil science society</term><term>Soil soil</term><term>Soil survey staff</term><term>Soil texture</term><term>Southern chile</term><term>Stabilization</term><term>Stabilization mechanism</term><term>Stable isotopes</term><term>Standard deviation</term><term>Strong relationship</term><term>Subsoil</term><term>Subsoil horizons</term><term>Suelos volc</term><term>Topsoil</term><term>Total mass</term><term>Total soil</term><term>Tropical podzols</term><term>Vegetation type</term><term>Volcanic</term><term>Volcanic soils</term><term>Whole soil</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Chili</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Carbone</term><term>Forêt</term><term>Science des sols</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Volcanic ash soils display distinctive morphological, physical and chemical properties and they contain several times more organic matter than non‐volcanic soils. So far, there are few studies of soil organic matter (SOM) distribution in different chemically and physically protected carbon pools of soil horizons of volcanic soils. The aim of this study was to determine the SOM distribution (and its δ13C and δ15N composition) in different chemical and physical fractions at various depth horizons of two Andisols under pasture or rain forest in southern Chile. We used the amount of humus‐complexes (Cp) extracted with Na pyrophosphate as a measure of C stabilized by aluminum (Alp) and iron (Fep) in combination with density fractionation to separate particulate organic matter as free (fPOM), occluded (oPOM) and organic matter associated with the mineral fraction (MF). The results showed that soil SOM stock (0–40 cm) in the pasture soil was 166 Mg C ha−1 (11.7 Mg N ha−1) and in the forest soil 100 Mg C ha−1 (4.1 Mg N ha−1). The SOM variation was explained largely by the differences in Cp, Alp and Fep. About 34% of total soil C was found as Cp in both oPOM and MF in the topsoil, whereas 33–53% was found in the subsoil horizons. The oPOM fraction was more important in the forest soil and generally decreased in the subsoil where these fractions were enriched with δ13C and δ15N. Our results emphasize the importance of the humus complex and oPOM formation as the SOM stabilization mechanism in the forest Andisol, whereas under pasture organo‐mineral interaction, including the formation of humic‐metal complexes, is the most important stabilization mechanism. A conceptual model is lacking to demonstrate the major areas of uncertainty within known mechanisms and factors that explain the distribution of SOM through soil profiles in Andisols.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Chili</li><li>France</li></country></list><tree><noCountry><name sortKey="Godoy, R" sort="Godoy, R" uniqKey="Godoy R" first="R." last="Godoy">R. Godoy</name></noCountry><country name="Chili"><noRegion><name sortKey="Panichini, M" sort="Panichini, M" uniqKey="Panichini M" first="M." last="Panichini">M. Panichini</name></noRegion><name sortKey="Borie, F" sort="Borie, F" uniqKey="Borie F" first="F." last="Borie">F. Borie</name><name sortKey="Borie, F" sort="Borie, F" uniqKey="Borie F" first="F." last="Borie">F. Borie</name><name sortKey="Borie, F" sort="Borie, F" uniqKey="Borie F" first="F." last="Borie">F. Borie</name><name sortKey="Matus, F" sort="Matus, F" uniqKey="Matus F" first="F." last="Matus">F. Matus</name><name sortKey="Matus, F" sort="Matus, F" uniqKey="Matus F" first="F." last="Matus">F. Matus</name><name sortKey="Mora, M L" sort="Mora, M L" uniqKey="Mora M" first="M. L." last="Mora">M. L. Mora</name><name sortKey="Mora, M L" sort="Mora, M L" uniqKey="Mora M" first="M. L." last="Mora">M. L. Mora</name></country><country name="Australie"><noRegion><name sortKey="Bolan, N S" sort="Bolan, N S" uniqKey="Bolan N" first="N. S." last="Bolan">N. S. Bolan</name></noRegion></country><country name="France"><noRegion><name sortKey="Rumpel, C" sort="Rumpel, C" uniqKey="Rumpel C" first="C." last="Rumpel">C. Rumpel</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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