INFLUENCE OF HUMUS ON THE BIO-ACCUMULATION OF A NORWAY SPRUCE STAND FROM CINDREL MOUNTAINS.

This study examines biomass accumulation in a spruce stand in the Cindrel Mountains under the influence of soil type. The research has been carried out in the Cindrel Mountains, Onceşti District. Two surfaces were analized, located at similar altitude, with similar climatic conditions and vegetation, but developed on different soils. The aim of the research was to establish a link between humus type and amount of biomass accumulated by forest species. In experimental plots soil samples were collected on which were made measurements of the morphological, physical and chemical properties, and an inventory of the forest vegetation to which it was integral. We aimed to characterize the soil in terms of pH, degree of base saturation, nitrogen, type of humus and edaphic useful volume. The determinations of the trees covered the height, diameter and some quality indicators. Other observation focused on the replicability of the forest site and indicator flora. The results obtained allowed us to draw conclusions based on statistical processing. [ABSTRACT FROM AUTHOR]