Radovi, Vol. 43 No. 1, 2008.
Prethodno priopćenje
THE INFLUENCE OF AMPHIBOLITE ROCK EXPLOITATION ON FORESTS AND SOIL IN VETOVO AREA
Boris Vrbek
; Šumarski institut, Jastrebarsko
Ivan Pilaš
; Šumarski institut, jastrebarsko
Zlatko Lisjak
; Uprva šuma Požega, Hrvatske šume d.o.o., Zagreb
Sažetak
In the area of Vetovo in Po`ega county the exploitation of amphibolite rocks has been
going on for a number of years, and deposited mattter as a by-product of digging and grounding
rock have had an impact on the quarry surroundings for some decades. To research into
the influence of the quarry on the surrounding forsts, in agreement with Croatian forests Ltd.
Of the Forest administration Po`ega, the dry and wet deposition was monitored on two research
plots. One of the plots was set up in the forest association of common oak and common
beech near the quarry, and another as control a few kilometers further in the same association,
and on the same soil type. On both localities the soil type is dystric cambisol.
Three samplers were set up on each plot. SiO2, SO4, Mg, Ca, K and Na were analysed. The
results of laboratory analysis of water samples have shown differences in the concentrations
of SiO2 and SO4 ions during every month of research. Multiple increase of these particles was
always on the plot near the quarry. The mean pH of samples on the plot near the quarry was
5,18, with a span from 3,53 to 6,21, and the mean pH on the control plot was 6,77, with a
span from 5,60 to 8,28. It is clear that the composition and pH of precipitation is influenced
also by compounds brought in by long-range transport, but here it could not be separated.
Amphibolites of Papuk are somewhat more “acid” due to diorite chemistry and contain
51,93% of SiO2. Due to the increase of SiO2 the samples on the plot near the quarry are more
acid in comparison with control, and that also has an impact on the soil chemistry in this
area as well as the vegetation of the nearby forest associations.
Ključne riječi
deposition; quarry; soil; forest association
Hrčak ID:
28031
URI
Datum izdavanja:
13.9.2008.
Posjeta: 1.172 *