Regime and dynamics of soil moisture in forest ecosystems of Zahorska lowland
2006
Tuzinsky, L.(Technicka Univ., Zvolen (Slovak Republic). Lesnicka Fakulta) E-mail:[email protected]
Research plots were situated near Kamenny mlyn, approximately 3 km from Plavecky Stvrtok and 8 km southward from the town of Malacky, Slovak Republic. Changes in the soil moisture content were described using the relation between soil moisture constants (MCC, PDA, WP) and atmospheric precipitations as well as the character of undergrowth. The low water-holding capacity of sandy soils and their high drainage together with dense root system do not allow sufficient saturation of soil during the growing season. The low wilting point value (2%) leads to the consumption of all available water in the soil. The most frequent is the semiarid interval of soil moisture (PDA-WP) with reduced availability of water to plants. The arid interval (less than WP) occurrence on hot summer days results in a decrease in transpiration and assimilation intensity of plants, their physiological weakening and premature fall of assimilation organs.
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