Bimodal zone of the soil textural triangle: common in tropical and subtropical regions. Soil Science Society of America Journal 72, 33-40.de Condappa, D., Galle, S., Dewandel, B., and Haverkamp, R.: Bi- modal z
For practical reasons linked to computing time, and for this work to be reproducible by the large majority of the scientific community, we used a subsampling of 180 soil samples out of a total of 1798. For each of the four main land use types and the “others” group (which contained va...
Notes 1 In archaeology, stratigraphy refers to the study of layers or strata of soil and sediment at archaeological sites. The ‘Law of Superposition’ dictates that the youngest layers are on top, helping establish a relative chronology. 2 Texel size refers to the spatial resolution of an indi...
additionally use the NIR band aiming to discriminate better between snow cover and water bodies. This is also the case of Urban and Soil Indices. The Urban Index (UI)32, developed to map urban areas and investigate urban density and socio-economic variables, was constructed using images from t...
Hawke’s Bay soils carry significant diversity of composition—there are 27 different types; mixed with climate variation, a sundry of growing conditions exist throughout. However, two soil types in particular are proffered as the most clearly defined and worthy of distinction: The first and most...
The results of the particle size distribution analysis were used to determine textural classification, using the soil texture triangle available from the USDA-NRCS [24] and according to Santos et al. [15]. Dispersible clay in water was quantified following the same procedure used for total clay ...
Figure 5.Soil textural triangle of the measured samples, representing variation [21]. Red spots indicate sandy soil, yellow indicates loamy soil, blue is clay-loamy soil, green represents clay soil, and light blue shows silty soil. Table 2.Summary statistics of laboratory determined soil attribute...
zero when the local surface is flat. Conversely, as shown inFigure 5, if the surface is not flat, the area given by the three vectors will be non-zero. The median area of this subtended triangle for all interior mesh triangles gives a scalar value related to the surface texture ...
2.4.1. Comparing the Area of Triangle Formed by the 3 Adjacent Surface Normals The 3 adjacent surface normals of any given triangle are normalised, and then transferred to the origin in order to quantify the local smoothness (shown inFigure 5). The 3 surface normals will point in the sam...