Radovi, Vol. 42 No. 2, 2007.
Izvorni znanstveni članak
The impact of Norway Spruce on soil
Ivan Perković
; Šumarski fakultet Sveučilišta u Zagrebu
Nikola Pernar
; Šumarski fakultet Sveučilišta u Zagrebu
Boris Vrbek
; Šumarski institut, Jastrebarsko
Damir Bakšić
; Šumarski fakultet Sveučilišta u Zagrebu
Ivan Pilaš
; Šumarski institut, Jastrebarsko
Milan Presečan
; Uprava šuma Bjelovar, Odjel za ekologiju šuma, Bjelovar
Sažetak
Conifer cultures in Croatia are established primarily with the goal of ameliorating sites
and preparing them for the achievement of ecologically stable forest stands. Research in central
European countries in which conifer cultures, and especially those of common spruce,
cover very large areas has revealed both positive and negative effects of such cultures on
sites and soils in particular. We wanted to find out the type and the extent to which such effects
on the soil can be measured in a spruce culture established within the pedunculate oak
range.
In order to define changes in the pedosphere of conifer cultures in relation to adjacent
natural stands, the soil was sampled at three locations in the area of Vrbovec Forest Office.
Three cultures of common spruce aged 36 to 40 years were selected in the area of natural
stands of pedunculate oak in central Croatia (community Carpino betuli-Quercetum
roboris /Ani} 1959/ Rau{ 1969, subass. typicum and fagetosum). Three plots were chosen in
each of the cultures to represent treatments, in relation to three plots chosen in natural
stands in the immediate proximity of the treatments. The soil in all the six plots is luvisol
on loess, typical or pseudogleyic, with acid to very acid reaction in the A horizon and in the
surface 5 cm soil.
Leaf litter and the surface mineral part of the soil up to 5 cm depth were used to analyze
differences among the investigated plots.
The quantity of leaf litter was shown to be on average 2 to 3 times higher in spruce cultures.
The pH value of the surface mineral soil was considerably lower in spruce cultures. The
investigated soil layer in spruce stands contained more humic acids than the soil of natural
stands. Of other parameters, although no significant differences could be detected, those in
the organic carbon content, the C/N ratio and the humic and fulvic acids deserve special
mention since they indicate poorer quality of organic matter in the surface mineral part of
the soil.
Ključne riječi
spruce cultures; impact on soil; leaf litter
Hrčak ID:
25984
URI
Datum izdavanja:
28.12.2007.
Posjeta: 1.337 *