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ŠUMARSKI LIST 9-10/1960 str. 60     <-- 60 -->        PDF

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A CONTRIBUTION TO THE KNOVVLEDGE OF FOREST SOILS OF THE BOSUT
REGION
Summary


The author presents a few results of an investigation of forest soils in the Bosut
region.


The Bosut lowland area represents both the largest and main complex of the
Sava basin forests. The specific ecological factors of this area have conditioned the
development and subsistence cf lowland forests of Pedunculate Oak belonging to the
communitv of Querceto-Genistetum elatae Horv.


The investigations carried out for orientation have proved that in addition to
the parent material, climate etc. the formation and distribution of soil types is here
considerablv influenced by the relief. Accordingly there developed on higher localities
— elevations — podzolized forest soils, or taking into consideration the differences
conditioned by the relief etc. very weakly and weakly podzolized soils respectively.
According to the most recent soil nomenclature the mentioned groups belong
partly to leached brown forest soils and parapodzolic soils. On higher localities (elevations)
which are under the influence of a greater moisture there developed a
parapcdzol (pseudogley). On this occasion there were described the profiles of podzolized
forest soils as well as those of very weackly and weakly podzolized soils
respectively, which belong predominantly to the leached brown forest soils. Besides
the process of acidification in these soils is also being observed a downward movement
of colloids from the surface horizons to deeper horizons. The examination of
the content of colloid clay particles (sized < 0.002 m. m.) shows that these soils are
mainly mođerately to strongly colloidal.


The soils are covered with stands of Pedunculate Oak (with Hornbeam). Soraetimes
to these stands are admixed the following tree species: Elm and Ash, Lime
and Common Maple.


On low-l;ying localities (depressions) occur swampy (hydrogeneous) soils. They
are under the influence of stagnat surface waters as well as high-level ground-
waters almost throughout the year. Owing to their heavy mechanical composition
they are rather jmpermeable. Described was the profile of the mineral swampy and
fairly humous soil on loess and mentioned were the properties of this soil as well
as those of a mineral swampy and strongly humous soil. The physical properties
of these soils are chiefly insatisfactory, their mechanical composition is heavy.


They are covered with stands of Ash and Oak. In svvamps there occurs a swamp
vegetation because they almost never dry out in the course of the year.