Results of the forest soil research in the project BIOSOIL in Czech Republic - wood nutrition supply by basic nutrients | Výsledky výzkumu lesních půd v rámci programu BIOSOIL v České republice - zajištění výživy dřevin základními živinami
2011
Šrámek, V., Výzkumný ústav lesního hospodářství a myslivosti, Jíloviště (Czech Republic) | Vortelová, L., Výzkumný ústav lesního hospodářství a myslivosti, Jíloviště (Czech Republic) | Fadrhonsová, V. | Hellebrandová, K.
The contribution assess the chemical properties of forest soils on 154 plots of the forest health monitoring program ICP Forests in the Czech Republic which were sampled within the international project BIOSOIL. For the upper humus and mineral layers down to depth of 80 cm the pH, total nitrogen, available base cation contents and base saturation are evaluated. Results show the majority of strongly acid (pH(CaCl2): 3- 4) and acid (pH(CaCl2): 4-5) forest soils. The nitrogen content in forest soils is generally good; considering the expected nitrogen deficiency in the past it could be assessed as increased. On the other hand the stock of available base cations in the mineral layers of forest soils is very low - even critical. Mainly available Ca content on most of the plots is under the critical deficiency limit (less than 140 mg per kg) and its total content is very low as well. The content of available magnesium and potassium are also often low, their total stock in the soil profile is, however, relatively good. It means that in the case of reduced air pollution load and appropriate management the weathering can contribute to the improvement of soil quality. The base saturation reflects the above mentioned facts and is very low (less than 10%) at many localities.
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