On the aggregation of the automorphic and semihydromorphic soils of Estonian lands
2000
Kask, R. | Jogi, Ue.
For all soils the water stability of microaggregates is the lower the deeper down we get from the A sub(org) horizon. The rest of the characteristics change mainly alongside the granulometric composition of the soils. Another important factor is the change of the content of non-silicate iron. In the eluvial horizon aggregation decreases as the clay and nonsilicate iron are washed out, whereas in the illuvial horizon aggregation, on the contrary, increases. In the B-horizon of sod-calcareous soils aggregation may even surpass that of the A sub(1)-horizon. In the gleyed and gley horizons the aggregation of soils decreases. As for the aggregation of the Gox-horizon it depends on its content of hydrogenically accumulated nonsilicate iron
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