Contemporary Pedogenic Processes in the Arctic Brunification.
Soil forming processes in response to current bioclimatic conditions are best assessed by analysis and interpretation of soil solution collected in situ by Iysimetry. We apply this approach to three soil types (Table 1) at well-drained sites in three arctic regions: the Tundra, Subpolar Desert, and...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.5270 http://www.afes.fr/afes/sds/SDS_28_4_p333_UGOLINI.PDF |
| Summary: | Soil forming processes in response to current bioclimatic conditions are best assessed by analysis and interpretation of soil solution collected in situ by Iysimetry. We apply this approach to three soil types (Table 1) at well-drained sites in three arctic regions: the Tundra, Subpolar Desert, and Polar Desert zones (Fig. 1). These soils were selected in order to follow an idealized latitudinal transect (Fig. 2) using empirical models (Fig. 3). Selected soil chemical parameters (Table Il) and soil solution parameters (Figs. 4, 5, 6, 7) are presented. The solution charge balances for the Arctic Browns from the three zones show differences and deviate from the brunification model of the temperate regions. The soil solution charge balances are for the Tundra, Subpolar Desert, and Polar Desert in Figs. 4, 5, 6 and 7 respectively. It was assumed that brunification would be the major process operating in the Arctic Brown soils. In ail three Arctic Browns examined, the organics are more mobile through the A horizons than predicted from the brunification model. The formation of the B horizon in these soils is due primarily to in situ weathering rather than illuviation (Fig. 4). |
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