Record details

Title
    Influence des pluies acides sur la qualité des eaux souterraines de la République tcheque
Statement of responsibility
    Zbyněk Hrkal
Other titles
    Les eaux souterraines et l'hydrogéologie en République tcheque (Variant.)
Author
    Hrkal, Zbyněk
Language
    francouzsky
Source title - serial
    Hydrogéologie
Vol./nr.
    No. 2
Pages
    p. 39-45
Year
    1999
Notes
    7 obr., 2 tab., 7 bibl.
    Anglické resumé
    Zkr. název ser.: Hydrogéologie
Subject group
    acidifikace
    dusík
    hydrochemie
    kvalita vody
    kyselý déšť
    malé povodí
    odlesňování
    pohoří
    síra
    vegetace
    voda podzemní
Geographical name
    Česká republika
Keyword
    Acides
    Eaux
    Influence
    Pluies
    Qualité
    République
    Souterraines
    Tcheque
Abstract (in english)
   Changes is groundwater quality in the mountain regions of the Czech Republic as a result of acid atmospheric deposition have been studied at two levels - detailed in small experimental catchment networks, and regional. The investigation of regional groundwater acidification was based on a comparison of old groundwater chemistry data sets (from the years 1955-1970) and recent data. The survey uncovered a fivefold increase in the average concentration of NO3 over the 25 year period and halving of the average groundwater alkalinity. The most acidified groundwaters were found at the highest altitudes, but the most rapid rate of change in groundwater chemistry was found lower down. Altitude-related information appears to confirm the important role of the vegetation cover. Deforestation is likely to reduce the proportion of dry deposition due to reduction of the total surface capable of capturing dust and gas particles.
   Concentrations of nitrates at higher altitudes are controlled by the young forest
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    28. 1. 2008
Import date
    8. 8. 2012