The Soils of Iceland (World Soils Book Series) by Arnalds Olafur

Author:Arnalds, Olafur [Arnalds, Olafur]
Language: eng
Format: azw3
Publisher: Springer Netherlands
Published: 2015-01-05T16:00:00+00:00

Oskarsson et al. (2004) used the AUI database to see the average depth distribution of carbon for the different soil types. The results for Sandy and Cambic Vitrisols, Brown Andosols, and Gleyic Andosols are shown in Fig. 8.6, which shows the pronounced difference between the Vitrisol and Andosol classes. Another noteworthy point is that there is a marked decrease in organic carbon at around 20 cm depth on average. This decrease has been explained by increased aeolian activity during the Middle Ages , when severe erosion of existing soils (mostly Brown Andosols) caused more rapid aeolian redistribution and deposition. The vertical distribution curve for the Histic Andosols and Histosols follows a similar trend (not shown on the figure).

Fig. 8.6Average vertical distribution of carbon for Sandy and Cambic Vitrisols and Brown and Gleyic Andosols . There is a clear decrease in carbon content of the Andosols that coincides with aeolian redistribution of soils during the Middle Ages . Data from the AUI database, based on Oskarsson et al. (2004)

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