Fjölrit RALA - 15.06.2004, Qupperneq 94

Fjölrit RALA - 15.06.2004, Qupperneq 94
Very recently discussed soil development aspects are frequent (daily) freeze-thaw cycles during the cold periods (J. Galbraith, 2003, pers. comm.; Caspari et al., 2004), and a major role of iron (Delvaux et al., 2004) that could be shown by EDX element mapping of the microaggregates providing high contents of evenly distributed Fe (Báumler et al., 2004). It indicates a stronger influence of Fe compounds, as previously thought, which might be named “Ferro-(Alu-)andic” properties. Another overall factor might be airbome, fine-grained sediments independent of the driving forces and the source materials either volcanic or non- volcanic (Adjadeh and Inoue, 1999), and providing the basis for structural properties and chemical weathering (Caspari et al., 2004). With respect to the worldwide occurrence of such soils and the specificity of their physicochemical properties, it is suggested a re-definition and probably simplification of existing classification schemes as already mentioned by Poulenard and Herbillon (2000). The apparently distinctive processes in these soils need to be further investigated. Such studies may indicate that these are different from Andosolisation and Podzolisation sensu stricto. References Adjadeh, Th.A., and K. Inoue 1999. Andisols of the Kitakami mountain range, northeastern Japan: their characterization and classification. Soil Sci. Plant Nutr. 45:115-130. Alexander, E.B., S.Shoji, and R. West 1993. Andic soil properties of Spodosols in nonvolcanic materials of southeast Alaska. Soil Sci. Soc. Am. J. 57:472-475. Aran, D., M.Gury, M.Zida, E.Jeanroy, and A.J. Herbillon 1998. Influence de la roche-mére et du climat sur les propriétés andiques des sols en région montagnarde tempérée (Vosges, France). Europ. J. Soil Sci. 49:269-281. Báumler, R., and W. Zech 1994. Characterization of Andisols developed from nonvolcanic material in eastern Nepal. Soil Sci. 158:211-217. Baumler, R., Th. Caspari, K.U. Totsche, Tshering Dorji, Chencho Norbu, and I. Baillie 2004. Andic properties in non-volcanic materials - a freak of nature or something special? Unpublished manuscript. Baillie, I.C., Kado Tshering, Tshering Dorji, H.B.Tamang, Tsheten Doiji, Chencho Norbu, A.A. Hutcheon, and R. Baumler 2004. Regolith and soils in mid-latitude Bhutan, Eastem Himalayas. Europ. J. Soil Sci., in press. Blaser, P., P. Kemebeek, L.Tabbens, N.van Breemen, and J. Luster 1997. Cryptopodzolic soils in Switzerland. Europ. J. Soil Sci. 48:411-423. Caner, L., G. Bourgeon, F.Toutain, and A.J. Herbillon 2000. Characteristics of non-allophanic Andisols derived from low-activity clay regoliths in the Nilgiri hills (Southem India). Europ. J. Soil Sci. 51:553-563. Caner, L., F. Toutain, G. Bourgeon, and A.J. Herbillon 2003. Occurrence of sombric-like subsurface A horizons in some andic soils of the Nilgiri Hills (Southem India) and their palaeoecological significance. Geoderma 117:251-265. Caspari, Th., R. Baumler, Kado Tshering, and Chencho Norbu 2004. Aeolian influence on the formation of non-volcanic Andosols in the Phobjikha valley, Westem Central Bhutan. Manuscript, unpublished. Delvaux, B., F. Strebl, E. Maes, A.J. Herbillon, V.Brahy, and M. Gerzabek 2004. An Andosol - Cambisol toposequence on granite in the Austrian Bohemian massif. Catena 56:31-43. Garcia-Rodeja, E., B.M. Silva, and F. Macias 1987. Andisols developed from non-volcanic materials in Galicia. J. Soil Sci. 38:573-591. Hunter, C.R., B.E. Frazier, and A.J. Busacca 1987. Lytell series: a nonvolcanic Andosol. Soil Sci. Soc. Am. J. 51:376-383. Poulenard, J. and A.J. Herbillon 2000. Sur L’existence de trois catégories d’horizons de référence dans les andosols. Earth Planetary Sci. 331:651-657. Wilcken, H., C.Sorge, and H.-R. Schulten 1997. Molecular composition and chemometric differentiation and classification of soil organic matter in Podzol B-horizons. Geoderma 76:193- 219. 73
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