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A procedure for the statistical characterization of the units of the Belgian soil map

Abstract:

A procedure is described and illustrated for the statistical characterization of the units of the Belgian soil map, published at a scale of 1:20 000. It makes use of the information of 8962 soil profiles described and sampled during the Belgian soil survey campaign and can be considered as an alternative for the use of legend class values and the selection of "reference' profiles. The procedure thereby considers horizons as basic information carriers and accounts for evidence on systematic variation of some properties of a given soil map unit over different regions. For every sequence depth and thickness of the horizons are statistically assessed. According to this procedure, map units for at least 70% of the area of Belgium north of the river axis Sambre and Meuse can be characterized based upon 10 or more profile descriptions. -from Authors