Impact of land cover and soil hydraulic properties on soil water regime

0548546 - ÚH 2022 CZ eng A - Abstrakt
Zelíková, Nikol
Impact of land cover and soil hydraulic properties on soil water regime.
Kostelecké inspirování 2020: Sborník abstraktů XII. ročníku konference on-line 19. – 20. listopadu 2020. Kostelec nad Černými Lesy: ČZU, Fakulta životního prostředí, Katedra ekologie, 2020 - (Harabiš, F.; Řeřicha, M.; Ševčík, R.). s. 47. ISBN 978-80-213-3053-5.
[Kostelecké inspirování /12./. 19.11.2020-20.11.2020, online]
Klíčová slova: land cover * soil moisture * soil water balance model * soil moisture regime
Obor OECD: Hydrology

In the context of climate change and socialist heritage of monoculture forestry, the landscape water retention became a topic of recent years in Czech Republic as in the central Europe. New legislative measures are being taken including the change of forest stend species proportion, especially in favour of deciduous trees. However, many research projects have been carried out concerning impact of forestry measures and species distribution on landscape water regime, only little work is presented on long-term effects of such measures. In our study, we investigate the impact of three land cover types (spruce, beech, grass) and soil hydraulic properties on soil water regime in Liz experimental catchment in Bohemian forest (Czech Republic). This aim involves evaluation of soil moisture values obtained from eighteen years of measurements and investigation of soil moisture balance parameters conditioning the overall soil moisture regime differences between each land cover. Furthermore, we will focus on creating yearly climate clusters inspecting climate—soil moisture regime relations and on constructing soil properties—land
cover virtual experiments, modelling scenarios of possible forestry management impacts. Balance analysis incorporates soil water balance model introduced by Brocca et al. (2008) with focus on keeping drainage and interception parameter in realistic values during calibration. For virtual experiments parametrization of soil and evapotranspiration properties of each land cover will be carried out. So far obtained results include first attempts of soil water balance model calibration for spruce and beech stands, already pointing out differences in discharge and evapotranspiration rates. However, other aspects influencing results of soil water balance model remain to be considered, such as variable leaf area index for beech stand, winter interception or incorporation of snowmelt effect by degree day factor method.
Trvalý link: http://hdl.handle.net/11104/0324592