Changes in the quantity and characteristics of surface humus after thinning treatments
2006
Podrazsky, V.(Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Lesnicka a Environmentalni) E-mail:[email protected] | Moser, W.K.(Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Lesnicka a Environmentalni) | Novak, J.(Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Opocno (Czech Republic))
We measured changes in humus forms in a forest stand at Vrchmezi site, Ore mountains, Czech Republic. Experimental thinning have been practiced for about 30 years in an effort to stabilize young stands of Norway spruce in the presence of air pollution. We sampled organic horizons and the top layer of the mineral soil profile in control and thinned plots in autumn 2002 to determine the amount of surface humus and basic chemical characteristics of the soil. Our analysis showed significant differences in the amount of organic material (58.51 t/ha in the thinned plots vs 70.08 t/ha in the control plot), higher acidity and concentration of bases in the control plot, and higher total Ca and Mg concentrations in the thinned plots.
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