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Not all water becomes wine: Sulfur inputs as an opportune tracer of hydrochemical losses from vineyards

Identifieur interne : 001215 ( Istex/Corpus ); précédent : 001214; suivant : 001216

Not all water becomes wine: Sulfur inputs as an opportune tracer of hydrochemical losses from vineyards

Auteurs : Eve-Lyn S. Hinckley ; Carol Kendall ; Keith Loague

Source :

RBID : ISTEX:1378393A4FDAA25A8C04CF2BAAEF38C8187B6BB7

Abstract

California's widespread and economically important vineyards offer substantial opportunities to understand the interface between hydrology and biogeochemistry in agricultural soils. The common use of native sulfur (S) as a fumigant or soil additive provides a novel way to isotopically differentiate among sulfate (SO42−) pools, allowing the estimation of water and SO42− budgets. The objectives of this study were (1) to characterize the near‐surface hydrological flow paths in a vineyard during irrigation and storm events and (2) to determine how those flow paths affect the fate and transport of SO42− across seasons. Integrating hydrological theory with measurements of SO42− concentration and sulfate‐S isotopic ratios (expressed as [SO42−] and δ34S, respectively) in inputs, soil water, and leachate provided a means of determining flow paths. Low [SO42−] and δ34S in leachate during 4‐h irrigation events reflect minimal engagement of the soil matrix, indicating that preferential flow was the dominant path for water in the near surface. In contrast, high [SO42−] and δ34S values during 8‐h irrigation and storm events reflect near‐complete engagement of the soil matrix, indicating that lateral flow was the dominant pathway. Because hydrologic response and SO42− mobility are tightly coupled in these soils, the magnitude of water fluxes through the near surface controls S cycling both on and off site. These results indicate that preferential flow is an important loss pathway to consider in managing both water resources and water quality (reactive elements) in vineyard land use systems.

Url:
DOI: 10.1029/2007WR006672

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ISTEX:1378393A4FDAA25A8C04CF2BAAEF38C8187B6BB7

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<familyName>Hinckley</familyName>
,
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,
<author>
<givenNames>C.</givenNames>
<familyName>Kendall</familyName>
</author>
, and
<author>
<givenNames>K.</givenNames>
<familyName>Loague</familyName>
</author>
(
<pubYear year="2008">2008</pubYear>
),
<articleTitle>Not all water becomes wine: Sulfur inputs as an opportune tracer of hydrochemical losses from vineyards</articleTitle>
,
<journalTitle>Water Resour. Res.</journalTitle>
,
<vol>44</vol>
, W00401, doi:
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<title type="main">Not all water becomes wine: Sulfur inputs as an opportune tracer of hydrochemical losses from vineyards</title>
<title type="short">SULFUR AS A TRACER OF HYDROCHEMICAL LOSSES</title>
<title type="shortAuthors">Hinckley
<i>et al</i>
.</title>
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<personName>
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<orgDiv>Department of Geological and Environmental Sciences</orgDiv>
<orgName>Stanford University</orgName>
<address>
<city>Stanford</city>
<countryPart>California</countryPart>
<country>USA</country>
</address>
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<orgName>U.S. Geological Survey</orgName>
<address>
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<countryPart>California</countryPart>
<country>USA</country>
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<keywordGroup type="author">
<keyword xml:id="wrcr11637-kwd-0001">preferential flow</keyword>
<keyword xml:id="wrcr11637-kwd-0002">sulfate</keyword>
<keyword xml:id="wrcr11637-kwd-0003">sulfur isotopes</keyword>
<keyword xml:id="wrcr11637-kwd-0004">precision irrigation</keyword>
<keyword xml:id="wrcr11637-kwd-0005">vineyards</keyword>
<keyword xml:id="wrcr11637-kwd-0006">Napa Valley</keyword>
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<mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:00431397:media:wrcr11637:wrcr11637-sup-0001-t01"></mediaResource>
<caption>Tab‐delimited Table 1.</caption>
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<caption>Tab‐delimited Table 2.</caption>
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<p xml:id="wrcr11637-para-0001" label="1">California's widespread and economically important vineyards offer substantial opportunities to understand the interface between hydrology and biogeochemistry in agricultural soils. The common use of native sulfur (S) as a fumigant or soil additive provides a novel way to isotopically differentiate among sulfate (SO
<sub>4</sub>
<sup>2−</sup>
) pools, allowing the estimation of water and SO
<sub>4</sub>
<sup>2−</sup>
budgets. The objectives of this study were (1) to characterize the near‐surface hydrological flow paths in a vineyard during irrigation and storm events and (2) to determine how those flow paths affect the fate and transport of SO
<sub>4</sub>
<sup>2−</sup>
across seasons. Integrating hydrological theory with measurements of SO
<sub>4</sub>
<sup>2−</sup>
concentration and sulfate‐S isotopic ratios (expressed as [SO
<sub>4</sub>
<sup>2−</sup>
] and
<i>δ</i>
<sup>34</sup>
S, respectively) in inputs, soil water, and leachate provided a means of determining flow paths. Low [SO
<sub>4</sub>
<sup>2−</sup>
] and
<i>δ</i>
<sup>34</sup>
S in leachate during 4‐h irrigation events reflect minimal engagement of the soil matrix, indicating that preferential flow was the dominant path for water in the near surface. In contrast, high [SO
<sub>4</sub>
<sup>2−</sup>
] and
<i>δ</i>
<sup>34</sup>
S values during 8‐h irrigation and storm events reflect near‐complete engagement of the soil matrix, indicating that lateral flow was the dominant pathway. Because hydrologic response and SO
<sub>4</sub>
<sup>2−</sup>
mobility are tightly coupled in these soils, the magnitude of water fluxes through the near surface controls S cycling both on and off site. These results indicate that preferential flow is an important loss pathway to consider in managing both water resources and water quality (reactive elements) in vineyard land use systems.</p>
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<title>Not all water becomes wine: Sulfur inputs as an opportune tracer of hydrochemical losses from vineyards</title>
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<namePart type="family">Hinckley</namePart>
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<abstract>California's widespread and economically important vineyards offer substantial opportunities to understand the interface between hydrology and biogeochemistry in agricultural soils. The common use of native sulfur (S) as a fumigant or soil additive provides a novel way to isotopically differentiate among sulfate (SO42−) pools, allowing the estimation of water and SO42− budgets. The objectives of this study were (1) to characterize the near‐surface hydrological flow paths in a vineyard during irrigation and storm events and (2) to determine how those flow paths affect the fate and transport of SO42− across seasons. Integrating hydrological theory with measurements of SO42− concentration and sulfate‐S isotopic ratios (expressed as [SO42−] and δ34S, respectively) in inputs, soil water, and leachate provided a means of determining flow paths. Low [SO42−] and δ34S in leachate during 4‐h irrigation events reflect minimal engagement of the soil matrix, indicating that preferential flow was the dominant path for water in the near surface. In contrast, high [SO42−] and δ34S values during 8‐h irrigation and storm events reflect near‐complete engagement of the soil matrix, indicating that lateral flow was the dominant pathway. Because hydrologic response and SO42− mobility are tightly coupled in these soils, the magnitude of water fluxes through the near surface controls S cycling both on and off site. These results indicate that preferential flow is an important loss pathway to consider in managing both water resources and water quality (reactive elements) in vineyard land use systems.</abstract>
<note type="additional physical form">Tab‐delimited Table 1.Tab‐delimited Table 2.</note>
<subject>
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<topic>preferential flow</topic>
<topic>sulfate</topic>
<topic>sulfur isotopes</topic>
<topic>precision irrigation</topic>
<topic>vineyards</topic>
<topic>Napa Valley</topic>
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<title>Water Resour. Res.</title>
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<subject>
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<topic authorityURI="http://psi.agu.org/specialSection/LANDUSE1">Impacts of Land Use Change on Water Resources</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0488">Sulfur cycling</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0454">Isotopic composition and chemistry</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0402">Agricultural systems</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1000">GEOCHEMISTRY</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1041">Stable isotope geochemistry</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1800">HYDROLOGY</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1880">Water management</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4870">Stable isotopes</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/6300">POLICY SCIENCES</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/6334">Regional planning</topic>
</subject>
<subject>
<genre>article-category</genre>
<topic>Regular Article</topic>
</subject>
<identifier type="ISSN">0043-1397</identifier>
<identifier type="eISSN">1944-7973</identifier>
<identifier type="DOI">10.1002/(ISSN)1944-7973</identifier>
<identifier type="CODEN">WRERAQ</identifier>
<identifier type="PublisherID">WRCR</identifier>
<part>
<date>2008</date>
<detail type="volume">
<caption>vol.</caption>
<number>44</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>7</number>
</detail>
<extent unit="pages">
<start>n/a</start>
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<accessCondition type="use and reproduction" contentType="copyright">Copyright 2008 by the American Geophysical Union.</accessCondition>
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