A continuous spatial characterization of textural fractions and CaCO3 content of the topsoil of the Polder region of Northwest East-Flanders, Belgium
Belgique ; Carbonate ; Géographie physique ; Littoral ; Milieu humide ; Oost-Vlaanderen ; Polder ; Propriété du sol ; Pédologie ; Sol ; Texture
The aim of our paper is to report the spatial variability of the clay, silt, sand, and CaCO3 contents of the topsoil of the Polder Region (6 840 ha) and to construct a continuous spatial characterization of these components. Because the AA. sampled
at small distance lags, several levels of spatial variability of the textural fractions ranging from within-a-field to polder scale were identified. This structure was best represented by nested semivariograms.
Unsaturated water movement in two bare polder soils of Belgium
Belgique ; Eau du sol ; Géographie physique ; Polder ; Précipitation ; Pédologie ; Variabilité temporelle
Tensiometers were used to investigate the direction of the unsaturated water movement in two polder soils during the growing season. Three different zones could be recognized in the unsaturated part of the soil profile : one with a positive, one
Spatial variability of soil texture in a polder area. 1. Kriging
Belgique ; Géographie physique ; Littoral ; Polder ; Propriété du sol ; Sol ; Statistique ; Texture ; Variabilité spatiale
Within a 1 ha field in the polder area, 247 observations of the depth of the lithologic discontinuity between loamy material (I) and deeper sandy loam material (II) were made, and 50 soils texture determinations of both materials were analysed using