Mots-clés
Agrégat ; Basel ; Dégradation des sols ; Géostatistiques ; Propriétés du sol ; Rugosité ; Réflectance ; Sol ; Sol cultivé ; Suisse ; Traitement des données ; TélédétectionAggregate ; Basel ; Cultivated land ; Data processing ; Geostatistics ; Remote sensing ; Roughness ; Soil ; Soil degradation ; Soil properties ; Spectral reflectance ; SwitzerlandAgregado ; Basilea ; Degradación de los suelos ; Geoestadísticas ; Propiedades del suelo ; Reflectancía ; Rugosidad ; Suelo ; Suelo cultivado ; Suiza ; Teledetección ; Tratamiento de datosReflectance anisotropy for measuring soil surface roughness of multiple soil types
Auteur(s) et Affiliation(s)
CROFT, H.
Dep. of Environmental Sciences, Univ., Basel, Suisse
ANDERSON, K.
College of Life and Environmental Sciences, Univ., Exeter, Royaume-Uni
KUHN, N.J.
Dep. of Environmental Sciences, Univ., Basel, Suisse
Description :
Five soil types with varying biochemical properties were subjected to artificial rainfall, producing a sequence of soil states of progressively declining soil surface roughness. Point laser data (2 mm sample spacing) were geostatistically analysed to give a spatially-distributed measure of surface roughness. Hyperspectral Hemispherical Conical Reflectance Factors (HCRFs) from the soil states were measured using a ground-based hyperspectral spectroradiometer. A directional index (Anisotropy Measure; AM) was determined, using a ratio between extreme forward-scattered and backscattered HCRFs. Regression analysis of AM against a geostatistically-derived value of soil surface roughness (sill variance) was used to test the ability of the AM for description of surface roughness for all soil types. The results demonstrate the great potential of this approach for compensating for spectral differences between different soil types.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2012, vol. 93, p. 87-96, nombre de pages : 10, Références bibliographiques : 47 ref.
Date :
2012
Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)