Digital terron mapping
Identifieur interne : 00A681 ( Main/Exploration ); précédent : 00A680; suivant : 00A682Digital terron mapping
Auteurs : Florence Carre [France] ; Alex B. Mcbratney [Australie]Source :
- Geoderma : (Amsterdam) [ 0016-7061 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Cartographie, Concept, Modèle, Modélisation, Décision, Caractéristique sol, Pedon, Topographie, Sol, Forme relief, Forme topographique, Terroir, Interpolation, Support, Systématique, Variable, Français, Base donnée, Classification, Algorithme flou, Régression linéaire, Krigeage, Validation, Echantillon, Carte pédologique.
- Wicri :
- topic : Cartographie, Décision, Base de données, Classification.
English descriptors
- KwdEn :
Abstract
The aim of this study is to propose a new concept, the terron, with an associated model, for helping environmental managers make decisions. Terron is a whole entity integrating soil properties (pedon) with topographic soil-forming factors (represented here by landform attributes)-which can be assimilated to terroir. For terron mapping, landform is not only an interpolation support as it is in existing models, but also a taxonomic variable. Data from French databases are used to illustrate this concept. Terron mapping consists of four stages. First is the classification of n area-representative soil types with landform attributes by fuzzy k-means with extragrades into n terron classes. Second is the establishment of terron-landform rules using a multi-linear regression. Third is the interpolation of the terron-landform rules using regression-kriging. Fourth is validation with a second sample dataset. The results are compared with a soil map created with a regression-kriging model.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 004796
- to stream PascalFrancis, to step Curation: 001907
- to stream PascalFrancis, to step Checkpoint: 004663
- to stream Main, to step Merge: 00B313
- to stream Main, to step Curation: 00A681
Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Decision</term>
<term>French</term>
<term>Fuzzy algorithm</term>
<term>Linear regression</term>
<term>Modeling</term>
<term>Property of soil</term>
<term>Support</term>
<term>Taxonomy</term>
<term>Terroir</term>
<term>Topographic form</term>
<term>Validation</term>
<term>Variable</term>
<term>cartography</term>
<term>classification</term>
<term>concepts</term>
<term>data bases</term>
<term>interpolation</term>
<term>kriging</term>
<term>landforms</term>
<term>models</term>
<term>pedons</term>
<term>samples</term>
<term>soils</term>
<term>soils maps</term>
<term>topography</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Cartographie</term>
<term>Concept</term>
<term>Modèle</term>
<term>Modélisation</term>
<term>Décision</term>
<term>Caractéristique sol</term>
<term>Pedon</term>
<term>Topographie</term>
<term>Sol</term>
<term>Forme relief</term>
<term>Forme topographique</term>
<term>Terroir</term>
<term>Interpolation</term>
<term>Support</term>
<term>Systématique</term>
<term>Variable</term>
<term>Français</term>
<term>Base donnée</term>
<term>Classification</term>
<term>Algorithme flou</term>
<term>Régression linéaire</term>
<term>Krigeage</term>
<term>Validation</term>
<term>Echantillon</term>
<term>Carte pédologique</term>
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<term>Base de données</term>
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<front><div type="abstract" xml:lang="en">The aim of this study is to propose a new concept, the terron, with an associated model, for helping environmental managers make decisions. Terron is a whole entity integrating soil properties (pedon) with topographic soil-forming factors (represented here by landform attributes)-which can be assimilated to terroir. For terron mapping, landform is not only an interpolation support as it is in existing models, but also a taxonomic variable. Data from French databases are used to illustrate this concept. Terron mapping consists of four stages. First is the classification of n area-representative soil types with landform attributes by fuzzy k-means with extragrades into n terron classes. Second is the establishment of terron-landform rules using a multi-linear regression. Third is the interpolation of the terron-landform rules using regression-kriging. Fourth is validation with a second sample dataset. The results are compared with a soil map created with a regression-kriging model.</div>
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