Mots-clés
Analyse spatiale ; Couvert végétal ; Drainage ; Etats-Unis ; North Carolina ; Plaine côtière ; Podzolisation ; Propriétés du sol ; Sol ; Sol cultivé ; Sol forestier ; Variation spatialeCoastal plain ; Cultivated land ; Drainage ; Forest soil ; North Carolina ; Plant canopy ; Podsolisation ; Soil ; Soil properties ; Spatial analysis ; Spatial variation ; United States of AmericaAnálisis espacial ; Carolina del Norte ; Cubierta vegetal ; Drenaje ; Estados Unidos ; Planicie litoral ; Podzolización ; Propiedades del suelo ; Suelo ; Suelo cultivado ; Suelo forestal ; Variación espacialSources of spatial complexity in two coastal plain soil landscapes
Auteur(s) et Affiliation(s)
PHILLIPS, J.D.
Dept. of Geography, Univ. of Kentucky, Lexington, Etats-Unis
Description :
The problem is approached at 2 study sites in Pitt County, North Carolina on the the U.S. Atlantic Coastal Plain using algebraic graph theory and the spectral radius of the soil adjacency matrix as a measure of complexity. The matrix is constructed based on the observed spatial contiguity of soil taxa, and soil factor sequences (SFS) are defined for each site based on systematic soil variation associated with variations in parent material, topography, sandy surface thicknesses, and secondary podzolization. The spectral radii of the networks described by the adjacency graphs are compared to those associated with the maximum for a graph of the same size, and the maximum associated with control entirely by variations in soil forming factors. Greater complexity of the adjacency matrix at partly forested site (Littlefield) vs. cropland site (Clayroot) is highlighted.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 111, p. 98-103, nombre de pages : 6, Références bibliographiques : 52 ref.
Date :
2013
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)