DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 9-10/1999 str. 16     <-- 16 -->        PDF

V. Topic: MHLIORACI.ISKJ UČINCI ŠUMSKIH KULTURA NA KRŠU U ODNOSU NA PEDOSFERU Šumarski list br. 9-10, CXXH1 (1999), 411-422
nowdays. According to Koppen, this area belongs to warm and moderately
warm climatic zone, and according to rain factor into humid climate. During
the vegetation period 500 mm or 40,5 % of the entire year rainfall falls. The
most rainfall has December, 163 mm and the least July, 63 mm. It is not seldom
that some summer months either do not have any rainfall or very little. The
area in which the plot lies belongs to the Mediterranean-mountain area of the
deciduous vegetation o/YOstryo-carpinetum orientalis).


From the data obtained on the experimental plot Klačine it can be seen that
the amelioration effects of forest sorts on the pedosphere are important and
different. The effects manifest in the chemical and physical changes in the soil.
Under coniferous trees there are bigger quantities of leaf litter, and less content,
except at Atlas Cedar, of entire nitrogen and humus in the soil, especially
in its humus accumulative horizon, than under decidious trees, especially Flowering
Ash and Oriental Hornbeam, what is surely the result of slower transforming
of leaf litter of coniferous trees and less percentage of nitrogen in
it. The least values are in soils under Black Pine. Physiologically active phosphorus
contain the soils under Flowering Ash with larger quantity of leaf litter,
a little less under Oak Downy, Black Pine, Oriental Hornbeam and Atlas Cedar,
and the least under Black Pine. Also the potassium lies most in the soils
under Flowering Ash and least under Black Pine and Maritima Pine.


The regression account showed that with the increase of unit of leaf litter the
humus in soil (A horizon) increased from 0,115 % (Atlas Cadar) till 0,631 %
(Flowering Ash), the content of nitrogen from 0,0048 % (Atlas Cedar) till 0,025
% (Oak Downy) and (Flowering Ash) the content of phosphorus from 0,017
mg/100 g (Black Pine) till 0,104 mg/lOOg (Oak Downy) and content of potassium
from 0,172 mg/100g (Atlas Cedar) till 1,465 mg/J00g (Flowering Ash).


The correlation between the content of humus, nirogen, phosphorus and
potassium with soil (A horizon) and leaf litter of investigated species on the
Klačine plot is statistically significant, even mostly high significant on the level
of1%.


Key words: amelioration effects, forest cultures, karst, Flowering Ash,
Atlas Cedar, Oriental Hornbeam, Black Pine, Oak Downy, pedosphere, leaf
litter, humus, nitrogen, phosphorus, potassium.