Beskydy 2015, 8, 27-33
Moisture conditions of the soil in spruce ecosystem in Oravská Polhora-Borsučie in growing seasons of 2012 and 2013
The paper presents the research results of soil water regime under the spruce stand in the Upper Orava, in Oravská Polhora - Borsučie in the growing seasons of 2012 and 2013. There are characterized different ranges of soil moisture, soil water categories and its accessibility for plants, particularly for the surface layer from 20 cm to 100 cm deep physiological soil profile. Dominant interval of moisture during the growing season is the semiuvidic interval with the soil moisture between hydrolimits MCC and PDA. Amount of water presents mostly capillary less moving water, in the surface layer of soil sufficient, for short time insufficient supply of usable water. The amount of water decreseases for a short time after dry days. Semiaridic interval with the soil moisture between hydrolimits PDA and WP, up to the upper third of the variation range means that the vegetation has available stationary capillary water in the surface layer. In prolonged dry season such humidity condition can be one of the main causes of physiological weakening of spruce.
