Record details

Title
    Vývoj látkových toků a překročení kritických zátěží v České republice
Statement of responsibility
    Daniela Fottová
Other titles
    Development of element fluxes and exceedances of critical loads in the Czech Republic
Author
    Fottová, Daniela, 1951-
Language
    česky
Source title - monograph
    Přehled výsledků geologických prací na ochranu horninového prostředí v roce 1997
Pages
    s. 37-39
Notes
    2 obr.
    Anglické resumé
Subject group
    atmosférická depozice
    dusík
    hydrologie
    kovy těžké
    kritická zátěž
    látky znečišťující
    malé povodí
    monitoring
    odtok
    síra
    srážky dešťové
    studie environmentálních vlivů
Geographical name
    Česká republika
Keyword
    České
    Kritických
    Látkových
    Překročení
    Republice
    Toků
    Vývoj
    Zátěží
Abstract (in english)
   Three years (1994-1996) of hydrological and chemical data from GEOMON network of fourteen small forest catchments are presented. The latest annual set of data from 1997 is just being processed. All of the data were acquired by a uniform sampling and analytical protocol. Bulk deposition, throughfall deposition and runoff of ecologically important component were measured on a montly basis. Some trends have been discovered as a changes. In the border mountains of northern and western part of the Czech Republic (Imission area) remedial measurements caused decrease of regional burder, especially of sulphate sulphur (S) and nitrate nitrogen (N) - both in throughfall and bulk deposition. Throughfall deposition below spruce canopies in Jezeří JEZ catchment in the Krušné hory Mts. was rather exceptional in that it increased between 1995 and 1996 because of high portion of SO2. It caused new occurence of forest dieback.
   In contrast to the prevailing decrease in Imission area deposition of S markedly increased in relatively clean parts of the Czech Republic (Background area) in the Ceskomoravská vrchovina highlands and in the Šumava Mts. The most apparent difference between both groups of the catchments was discovered in runoff on nitrogen. Runoff from the catchments of Immission area with damaged forests is very high in consequence of that forests have lost their ability to take up N as a nutrient. Budget became even negative in some catchments of that area. On the contrary in Background area relatively healthy vegetation the runoff was considerably lower. Critical loads of S and N for forested areas of the catchments were calculated using the data on weathering, soil properties and the consumption of basic cations by the vegetation. Calculated values were compared with the actual deposition figures and exceedances were calculated.
   In the most of the catchments both critical values of S and N were exceeded
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    21. 3. 2008
Import date
    8. 8. 2012