Temporal changes in the spatial distributions of some soil properties on a temperate grassland site
Identifieur interne : 000F85 ( Main/Merge ); précédent : 000F84; suivant : 000F86Temporal changes in the spatial distributions of some soil properties on a temperate grassland site
Auteurs : Z. Shi [République populaire de Chine] ; K. Wang [République populaire de Chine] ; J. S. Bailey [Royaume-Uni] ; C. Jordan [Royaume-Uni] ; A. H. Higgins [Royaume-Uni]Source :
- Soil Use and Management [ 0266-0032 ] ; 2002-12.
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- geographic : Royaume-Uni.
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Abstract
Abstract. Precision Agriculture seeks to match resource application and agronomic practice with soil and crop requirements as they vary in both space and time. Therefore, an understanding of both the temporal and the spatial components of variability is essential before decisions can be made about the feasibility of site‐specific management. In the present study, the spatial and the temporal components of variability in certain key soil properties of a grassland field were evaluated to assess the likely feasibility of adopting a site‐specific approach to grassland management. A 7.9 ha grassland field was selected for the study and soil samples were taken three times at regular 25 m intervals across the field over a two year period, and chemically analysed. Classical and geostatistical procedures were used to evaluate the spatial variability and the temporal stability of soil property distributions. Soil extractable P and K had the greatest within‐field variability and soil pH the least. Soil K distributions were also highly unstable over time and it was concluded that the optimal risk aversion strategy would be to apply uniform dressings of this nutrient to the entire field. In contrast, soil pH, P, Mg and sulphate distributions were not only temporally stable, but were also spatially correlated over reasonably large ranges. It was concluded that these properties might be managed in a site‐specific way based on the results of periodic soil testing in three clearly defined management sub‐units within the field. Over the two year period, C and N accumulated in the soil at surprisingly high rates on certain parts of the field but not in others.
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DOI: 10.1111/j.1475-2743.2002.tb00252.x
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Higgins</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:0A57CD23B25172D6A0881843903B2D1D151A4A36</idno><date when="2002" year="2002">2002</date><idno type="doi">10.1111/j.1475-2743.2002.tb00252.x</idno><idno type="url">https://api.istex.fr/document/0A57CD23B25172D6A0881843903B2D1D151A4A36/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000E99</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000E99</idno><idno type="wicri:Area/Istex/Curation">000E34</idno><idno type="wicri:Area/Istex/Checkpoint">000832</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000832</idno><idno type="wicri:doubleKey">0266-0032:2002:Shi Z:temporal:changes:in</idno><idno type="wicri:Area/Main/Merge">000F85</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Temporal changes in the spatial distributions of some soil properties on a temperate grassland site</title><author><name sortKey="Shi, Z" sort="Shi, Z" uniqKey="Shi Z" first="Z." last="Shi">Z. Shi</name><affiliation wicri:level="4"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Soil Science and Agrochemistry, Zhejiang University, Huajiachi Campus, Hangzhou, 310029</wicri:regionArea><orgName type="university">Université de Zhejiang</orgName><placeName><settlement type="city">Hangzhou</settlement><region type="province">Zhejiang</region></placeName></affiliation></author><author><name sortKey="Wang, K" sort="Wang, K" uniqKey="Wang K" first="K." last="Wang">K. Wang</name><affiliation wicri:level="4"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Soil Science and Agrochemistry, Zhejiang University, Huajiachi Campus, Hangzhou, 310029</wicri:regionArea><orgName type="university">Université de Zhejiang</orgName><placeName><settlement type="city">Hangzhou</settlement><region type="province">Zhejiang</region></placeName></affiliation></author><author><name sortKey="Bailey, J S" sort="Bailey, J S" uniqKey="Bailey J" first="J. S." last="Bailey">J. S. Bailey</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Agriculture and Rural Development for Northern Ireland, Agricultural and Environmental Science Division, Newforge Lane, Belfast, BT9 5PX</wicri:regionArea><wicri:noRegion>BT9 5PX</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Royaume-Uni</country></affiliation></author><author><name sortKey="Jordan, C" sort="Jordan, C" uniqKey="Jordan C" first="C." last="Jordan">C. Jordan</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Agriculture and Rural Development for Northern Ireland, Agricultural and Environmental Science Division, Newforge Lane, Belfast, BT9 5PX</wicri:regionArea><wicri:noRegion>BT9 5PX</wicri:noRegion></affiliation></author><author><name sortKey="Higgins, A H" sort="Higgins, A H" uniqKey="Higgins A" first="A. H." last="Higgins">A. H. Higgins</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Agriculture and Rural Development for Northern Ireland, Agricultural and Environmental Science Division, Newforge Lane, Belfast, BT9 5PX</wicri:regionArea><wicri:noRegion>BT9 5PX</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Soil Use and Management</title><idno type="ISSN">0266-0032</idno><idno type="eISSN">1475-2743</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2002-12">2002-12</date><biblScope unit="volume">18</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="353">353</biblScope><biblScope unit="page" to="362">362</biblScope></imprint><idno type="ISSN">0266-0032</idno></series><idno type="istex">0A57CD23B25172D6A0881843903B2D1D151A4A36</idno><idno type="DOI">10.1111/j.1475-2743.2002.tb00252.x</idno><idno type="ArticleID">SUM353</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0266-0032</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Grassland soils</term><term>UK</term><term>nutrients</term><term>precision agriculture</term><term>soil pH</term><term>spatial variation</term><term>temporal variation</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Royaume-Uni</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Abstract. Precision Agriculture seeks to match resource application and agronomic practice with soil and crop requirements as they vary in both space and time. Therefore, an understanding of both the temporal and the spatial components of variability is essential before decisions can be made about the feasibility of site‐specific management. In the present study, the spatial and the temporal components of variability in certain key soil properties of a grassland field were evaluated to assess the likely feasibility of adopting a site‐specific approach to grassland management. A 7.9 ha grassland field was selected for the study and soil samples were taken three times at regular 25 m intervals across the field over a two year period, and chemically analysed. Classical and geostatistical procedures were used to evaluate the spatial variability and the temporal stability of soil property distributions. Soil extractable P and K had the greatest within‐field variability and soil pH the least. Soil K distributions were also highly unstable over time and it was concluded that the optimal risk aversion strategy would be to apply uniform dressings of this nutrient to the entire field. In contrast, soil pH, P, Mg and sulphate distributions were not only temporally stable, but were also spatially correlated over reasonably large ranges. It was concluded that these properties might be managed in a site‐specific way based on the results of periodic soil testing in three clearly defined management sub‐units within the field. Over the two year period, C and N accumulated in the soil at surprisingly high rates on certain parts of the field but not in others.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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