WATER QUALITY MODELING OF ALTERNATIVE AGRICULTURAL SCENARIOS IN THE U.S. CORN BELT
Identifieur interne : 000E89 ( Istex/Curation ); précédent : 000E88; suivant : 000E90WATER QUALITY MODELING OF ALTERNATIVE AGRICULTURAL SCENARIOS IN THE U.S. CORN BELT
Auteurs : Kellie B. Vaché ; Joseph M. Eilers ; Mary V. SantelmannSource :
- JAWRA Journal of the American Water Resources Association [ 1093-474X ] ; 2002-06.
English descriptors
- KwdEn :
Abstract
ABSTRACT: Simulated water quality resulting from three alternative future land‐use scenarios for two agricultural watersheds in central Iowa was compared to water quality under current and historic land use/land cover to explore both the potential water quality impact of perpetuating current trends and potential benefits of major changes in agricultural practices in the U.S. Corn Belt. The Soil Water Assessment Tool (SWAT) was applied to evaluate the effect of management practices on surface water discharge and annual loads of sediment and nitrate in these watersheds. The agricultural practices comprising Scenario 1, which assumes perpetuation of current trends (conversion to conservation tillage, increase in farm size and land in production, use of currently‐employed Best Management Practices (BMPs)) result in simulated increased export of nitrate and decreased export of sediment relative to the present. However, simulations indicate that the substantial changes in agricultural practices envisioned in Scenarios 2 and 3 (conversion to conservation tillage, strip intercropping, rotational grazing, conservation set‐asides and greatly extended use of best management practices (BMPs) such as riparian buffers, engineered wetlands, grassed waterways, filter strips and field borders) could potentially reduce current loadings of sediment by 37 to 67 percent and nutrients by 54 to 75 percent. Results from the study indicate that major improvements in water quality in these agricultural watersheds could be achieved if such environmentally‐targeted agricultural practices were employed. Traditional approaches to water quality improvement through application of traditional BMPs will result in little or no change in nutrient export and minor decreases in sediment export from Corn Belt watersheds.
Url:
DOI: 10.1111/j.1752-1688.2002.tb00996.x
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: Pour aller vers cette notice dans l'étape Curation :000F54
Links to Exploration step
ISTEX:CC8F29A37E6E8A59B730EE6EDE18E543BF705D4BLe document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">WATER QUALITY MODELING OF ALTERNATIVE AGRICULTURAL SCENARIOS IN THE U.S. CORN BELT</title><author><name sortKey="Vache, Kellie B" sort="Vache, Kellie B" uniqKey="Vache K" first="Kellie B." last="Vaché">Kellie B. Vaché</name></author><author><name sortKey="Eilers, Joseph M" sort="Eilers, Joseph M" uniqKey="Eilers J" first="Joseph M." last="Eilers">Joseph M. Eilers</name></author><author><name sortKey="Santelmann, Mary V" sort="Santelmann, Mary V" uniqKey="Santelmann M" first="Mary V." last="Santelmann">Mary V. Santelmann</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:CC8F29A37E6E8A59B730EE6EDE18E543BF705D4B</idno><date when="2002" year="2002">2002</date><idno type="doi">10.1111/j.1752-1688.2002.tb00996.x</idno><idno type="url">https://api.istex.fr/document/CC8F29A37E6E8A59B730EE6EDE18E543BF705D4B/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000F54</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000F54</idno><idno type="wicri:Area/Istex/Curation">000E89</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">WATER QUALITY MODELING OF ALTERNATIVE AGRICULTURAL SCENARIOS IN THE U.S. CORN BELT</title><author><name sortKey="Vache, Kellie B" sort="Vache, Kellie B" uniqKey="Vache K" first="Kellie B." last="Vaché">Kellie B. Vaché</name></author><author><name sortKey="Eilers, Joseph M" sort="Eilers, Joseph M" uniqKey="Eilers J" first="Joseph M." last="Eilers">Joseph M. Eilers</name></author><author><name sortKey="Santelmann, Mary V" sort="Santelmann, Mary V" uniqKey="Santelmann M" first="Mary V." last="Santelmann">Mary V. Santelmann</name></author></analytic><monogr></monogr><series><title level="j">JAWRA Journal of the American Water Resources Association</title><idno type="ISSN">1093-474X</idno><idno type="eISSN">1752-1688</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2002-06">2002-06</date><biblScope unit="volume">38</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="773">773</biblScope><biblScope unit="page" to="787">787</biblScope></imprint><idno type="ISSN">1093-474X</idno></series><idno type="istex">CC8F29A37E6E8A59B730EE6EDE18E543BF705D4B</idno><idno type="DOI">10.1111/j.1752-1688.2002.tb00996.x</idno><idno type="ArticleID">JAWR773</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1093-474X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>SWAT</term><term>agricultural watersheds</term><term>future scenarios</term><term>modeling</term><term>water quality</term><term>watershed management</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">ABSTRACT: Simulated water quality resulting from three alternative future land‐use scenarios for two agricultural watersheds in central Iowa was compared to water quality under current and historic land use/land cover to explore both the potential water quality impact of perpetuating current trends and potential benefits of major changes in agricultural practices in the U.S. Corn Belt. The Soil Water Assessment Tool (SWAT) was applied to evaluate the effect of management practices on surface water discharge and annual loads of sediment and nitrate in these watersheds. The agricultural practices comprising Scenario 1, which assumes perpetuation of current trends (conversion to conservation tillage, increase in farm size and land in production, use of currently‐employed Best Management Practices (BMPs)) result in simulated increased export of nitrate and decreased export of sediment relative to the present. However, simulations indicate that the substantial changes in agricultural practices envisioned in Scenarios 2 and 3 (conversion to conservation tillage, strip intercropping, rotational grazing, conservation set‐asides and greatly extended use of best management practices (BMPs) such as riparian buffers, engineered wetlands, grassed waterways, filter strips and field borders) could potentially reduce current loadings of sediment by 37 to 67 percent and nutrients by 54 to 75 percent. Results from the study indicate that major improvements in water quality in these agricultural watersheds could be achieved if such environmentally‐targeted agricultural practices were employed. Traditional approaches to water quality improvement through application of traditional BMPs will result in little or no change in nutrient export and minor decreases in sediment export from Corn Belt watersheds.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Agronomie/explor/SisAgriV1/Data/Istex/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000E89 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Curation/biblio.hfd -nk 000E89 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Agronomie
|area= SisAgriV1
|flux= Istex
|étape= Curation
|type= RBID
|clé= ISTEX:CC8F29A37E6E8A59B730EE6EDE18E543BF705D4B
|texte= WATER QUALITY MODELING OF ALTERNATIVE AGRICULTURAL SCENARIOS IN THE U.S. CORN BELT
}}
| This area was generated with Dilib version V0.6.28. |  |