S-map's primary map layer is soil classes, i.e. delineated areas that are labelled with the soil family name. Each soil family is defined as a unique combination of attributes (NZSC classification, parent material, rock type, dominant texture and permeability class). Soil classes are further characterised as siblings according to their depth to rock class, stoniness, land type, drainage, texture (more detailed), functional horizons and miscellaneous variant information.
This layer is a "dissolved" representation of the soil texture attribute for S-map soils. Soil texture profile is defined in Webb and Lilburne (2011). Texture can be specified as either a single texture or a compound texture profile.
c clay k skeletal l loam s sandy loam Tl loamy peat Tp peat Ts sandy peat z silty loam
Webb TH, Lilburne LR 2011. Criteria for defining the soil family and soil sibling: The fourth and fifth categories of the New Zealand Soil Classification. 2nd ed. Lincoln, Canterbury, New Zealand, Manaaki Whenua Press. 38 p.
S-map builds on previous soil mapping by filling gaps with new mapping, and upgrading the information content and associated database to meet a new national standard.
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 New Zealand