By H. de Bakker

Soil technological know-how within the Netherlands places robust emphasis at the courting among mum or dad fabric and soil formation, and among physiographic stipulations and land use. This strategy, built by way of the past due Professor Dr C. H. Edelman ( 1903-1964), is sort of comprehensible in a rustic the place soils need to an excellent quantity constructed from alluvial and aeolian fabrics of modern geological starting place. Dutch soil scientists have paid a lot realization to pedogenesis in clean sediments, referred to as 'initial soil formation' or 'ripening', and to groundwater as a soil forming issue. moreover, human impression on soil genesis, during this land of artificial soils, has been tho­ approximately investigated. 'Major soils and soil areas within the Netherlands' truly displays those particular beneficial properties of soils paintings during this kingdom. In his booklet, Mr H. de Bakker, Head of the Soil category portion of the Netherlands Soil Survey Institute (Stichting voor Bodemkartering) addresses the designated pursuits of international soil scientists and of scholars of earth sciences. the writer examines consultant soil profiles not just with admire to the Netherlands' procedure of soil class- of which he's the co-author-but additionally by way of a number of the significant category structures utilized in different nations. it seems that a good characterised soil profile may perhaps discover a very diverse position in numerous classifications and that even for a knowledgeable professional it is usually tough to reach at a particular choice inside a given system.

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137 and 138). The brown plaggen soils are situated on cover sand ridges in or bordering small river valleys (cf. Figure 13 in: Pape, 1970), their topsoil is more clayey and their C-N ratios are lower than those of their black counterparts (cf. the analytical data on p. 136 and 140). Most authors agree that 'the use of clayey sods, taken from this valley, has caused the brown colour' (Pape, 1970, p. 252), but some authors are more cautious and say this 'is not quite so evident' (Domhof, 1953, p.

FED. REP. OF GERMANY 0 20 40 ~ BO~m BELGIUM Fig. 25. The distribution of Plaggen soils in northwestern Europe . Raised soils from marine parent material. These two soils are situated in what has been called 'the older land' in the first section of this chapter; one comes from the southwest(south of The Hague, soilA4), and the other from the north (about 30 km north of the northern boundary of Figure 8; soil A5). Although these soils are not plaggen soils in the classic sense, they fit the new concept of the Plaggepts in Soil Taxonomy, because the surface horizon satisfies the criteria for the Plaggen epipedon (SSS, 1975, p.

121) has been partly excavated (a thickness of several meters of peat may have been used for fuel). The other three soils (RB3 on p. 125, RB4 on p. 129 and RB5, on p. 133) are examples of so-called versleten veenkoloniale gronden (wasted peatcolonial soils, cf. p. 127); the latter two have been mixed. Anthropogenic soils This is the only section in which the soils are not arranged according to their geographic relationships and surface geology. The five anthropogenic soils (soils Al-AS, p. 134-153) are grouped together because they share one dominant soilforming factor: man.

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