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    Wyświetlanie 1-4 z 4
    Tytuł:
    Prevailing forest types in the river catchments within the Left-Bank Forest-Steppe zone, Ukraine
    Autorzy:
    Bondar, Oleksandr
    Rumiantsev, Maksym
    Tkach, Liudmyla
    Obolonyk, Iryna
    Powiązania:
    https://bibliotekanauki.pl/articles/2041642.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    catchment area
    tributary
    forest mensuration database
    Sula River
    Psel River
    Vorskla River
    Siversky Donets River
    Opis:
    The aim of the study was to determine the distribution of prevailing forest types within the catchment areas of the biggest rivers in the north-east of Ukraine. During the allocation of the catchment areas of the studied rivers, the MapInfo Professional 12.5 program and the vector map of Ukraine were used. The research covered the forest area (more than 502,000 ha) of the state forest enterprises managed by the State Forest Resources Agency of Ukraine. The studied area located on the tributaries of the Sula, Psel, Vorskla and Siversky Donets rivers within the Poltava, Kharkiv, Sumy, Chernihiv, Kyiv and Cherkasy administrative regions of Ukraine. The analysis of the forest fund was carried out based on the electronic subcompartment database of the Ukrderzhlisproekt Production Association, using the application software and geoinformation technologies. It was revealed that a large variety of forest types in the tributaries of the Sula, Psel, Vorskla and Siversky Donets rivers as well as the prevalence of fresh fertile maple-lime oak and fresh fairly infertile oak-pine forest types (in 75 tributaries of Psel, Vorskla and Siversky Donets rivers) and fresh fertile maple-lime oak and fresh fertile hornbeam oak forest types (in 20 tributaries of the Sula River) are due to the relief, hydrological and soil-climatic conditions of the studied area, as well as anthropogenic factor. Assuming homogeneous natural conditions, an insignificant number of forest types are formed (up to five). For a large variety of natural conditions, there are at least six forest types that should be taken into account during forest management, along with the characteristics of the catchment areas of tributaries. The analysed data on the total number of forest types in the catchments of rivers would be appropriate to use in the future when creating a single list of forest types for the Left-Bank Forest-Steppe zone of Ukraine. The prevalence of certain forest types within the catchment areas of tributaries of the Sula, Psel, Vorskla and Siversky Donets rivers directly depends on the soil and climatic conditions, geomorphological structure, relief and anthropogenic influence in the forests. The results should be used in forest management activities to preserve and restore the species diversity of forests within the river catchmen
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 2; 100-113
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the aluminium load in the aquatic environment of two small rivers in the Baltic Sea catchment area
    Autorzy:
    Senze, M.
    Kowalska-Goralska, M.
    Bialowas, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/14749.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    aluminium
    accumulation
    water
    aquatic environment
    aquatic plant
    bottom sediment
    small river
    river
    Baltic Sea
    catchment area
    Opis:
    The study covered the aquatic environment of two small rivers in Western Pomerania, Poland, such as the Czerwona and the Grabowa. Its purpose was to determine aluminium bioaccumulation in the aquatic environment by testing water, bottom sediments and aquatic plants. Samples were taken in the summers of 2008-2011. pH, electrolytic conductivity and aluminium concentration were determined in water samples, while the sediment and plant samples were submitted to analyses of the aluminium content. The water pH oscillated between 6.04 and 8.95, while the electrolytic conductivity ranged from 440 to 1598 μS cm-1. The aluminium concentration in the river water was up to 0.138 mg Al dm-3 in the Czerwona and up to 0.425 mg Al dm-3 in the Grabowa. The maximum aluminium content in the bottom sediments was 47.01 mg Al kg-1 in the Czerwona River and 26.15 mg Al kg-1 in the Grabowa River. The maximum aluminium content in the aquatic plants sampled from the Czerwona was 91.63 mg Al kg-1, and from the Grabowa – 1,077 mg Al kg-1. The bioconcentration factor (BCF) of aluminium for the Czerwona River ranged from 5.06 to 24,052, and for the Grabowa River – from 1.10 to 70,132. The concentration factor (CF) of aluminium in the bottom sediments oscillated between 66.72 and 23,492 in the Czerwona River and between 14.81 and 2,763 in the Grabowa. The aluminium content in the two rivers was relatively low in the water, sediments and aquatic plants, which is typical of environments without strong anthropopressure. The values fell within the limits set by environmental water quality standards. The low aluminium accumulation degrees in the biotic and abiotic components indicate that the environments of the two rivers have a low load of aluminium compounds.
    Źródło:
    Journal of Elementology; 2015, 20, 4
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ochrona wód zlewni Bugu – poprawa czystości rzeki międzynarodowym wyzwaniem
    Protection of the River Bug Catchment Area – Improvement of the River’s Waters Quality as an International Challenge
    Autorzy:
    Lis, Edward
    Powiązania:
    https://bibliotekanauki.pl/articles/417156.pdf
    Data publikacji:
    2016-08
    Wydawca:
    Najwyższa Izba Kontroli
    Tematy:
    River Bug
    catchment area
    quality of the waters
    pollution
    Water Framework Directive
    Opis:
    Ten years ago, the audit was conducted entitled “Protection of the River Bug Catchment Area in the Years 2003-2006”. Apart from NIK, the audit was conducted by the Supreme Audit Institutions of Ukraine and Belarus. In 2015, the follow-up coordinated audit was carried out entitled “Protection of the River Bug Catchment Area against Pollution”. The audit was conducted on the initiative of the President of the Chamber of Accounts of Ukraine. The audit examined the implementation of the audit conclusions of 2006 aimed at achieving good quality of the waters of the River Bug catchment area, which means the compliance with the Water Framework Directive.
    Źródło:
    Kontrola Państwowa; 2016, 61, 4 (369); 65-74
    0452-5027
    Pojawia się w:
    Kontrola Państwowa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorptive properties of natural water surfactant films. Dead Vistula catchment water studies
    Autorzy:
    Pogorzelski, S.J.
    Kogut, A.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/48236.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    temporal variability
    natural water
    inland water
    natural film
    surface isotherm
    scaling procedure
    spatial variability
    surfactant
    adsorption kinetics
    Vistula River
    catchment area
    Opis:
    The paper contains the results of natural film experiments carried out on inland waters in the Dead Vistula (Martwa Wisła) catchment area during 1999–2002 using the integrated Langmuir trough-Wilhelmy plate system,w hich ‘cuts out’ an undisturbed film-covered area without any physicochemical sample processing. The static film parameters result from the generalized scaling procedures applied to the surface pressure-area isotherms. They appear to correspond well to observations of the film composition (Alim, MW, Eisoth),film solubility and the miscibility of its components (via R, ΔSc and y factors),and surface concentration (πeq, Γeq). A novel approach is presented for the adsorption dynamics on the basis of the mixed kinetic-diffusion model and analyses of the dynamic surface pressure plots,whic h leads to the determination of the effective relative diffusion coefficient Deff/D and activation energy barrier Ea/RT . There is reason to believe that certain classes of film-forming components or ‘end-members’ may dominate the static and dynamic surface properties. Some of these substances can be used as source-specific surface-active biomarkers to trace temporal and spatial changes due to environmental factors or the production of biological matter. The concept was tested for the Dead Vistula river and its tributaries. The results demonstrate that natural films are a complex mixture of biopolymeric molecules covering a wide range of solubilities,sur face activities and molecular masses with an apparent structural film architecture. Such studies could lead to the development of film structure parameters – indicators of ecosystem quality and the state of the environment.
    Źródło:
    Oceanologia; 2003, 45, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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