Dynamics of surface water quality changes in model headwater areas of the Czech Republic

0582430 - ÚH 2024 CZ eng K - Konferenční příspěvek (tuzemská konf.)
Fraindová, K. - Matoušková, M. - Kliment, Z. - Vlček, Lukáš - Vlach, V. - Šajnarová, L.
Dynamics of surface water quality changes in model headwater areas of the Czech Republic.
Sborník příspěvků z První konference projektu PERUN. Praha: ČHMÚ, 2023 - (Tolasz, R.; Polcarová, E.), s. 269-280. ISBN 978-80-7653-063-8.
[První konference projektu PERUN. Průhonice (CZ), 16.10.2023-18.10.2023]
Institucionální podpora: RVO:67985874
Klíčová slova: headwater areas * organic matter * waterlogged areas * peatbogs * raifall-runoff events * water quality * electric conductivity
Obor OECD: Hydrology
https://www.chmi.cz/files/portal/docs/reditel/SIS/doi/Perun/2023/978-80-7653-063-8.pdf

River headwaters have a high environmental value. Unfortunately, the biogeochemical processes in headwaters in context of different rainfall-runoff conditions and specific land cover have not been fully examined. This study focuses on changes in correlations of 16 biogeochemical parameters related to different types of rainfall-runoff events and land cover condition for eight headwater catchments in Central Europe. Multiple methods as linear regression, Spearman rank correlation, Principal Components Analysis and C/Q hysteresis loops revealed main relationships. Presence of peatlands and waterlogged spruce forests had decisive influence on the biogeochemistry (mainly for CODMn, humins, Fe, P-PO43− TP, and N-NO3−). The strongest positive correlation of organic matter (CODMn) and Fe is represented in a catchment with the largest area of damaged forest (70%), but with a smaller proportion of wetlands (8%). High flow rates influence the release of greater amounts of organic matter and N-NO3−.
Trvalý link: https://hdl.handle.net/11104/0350497