Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "headwater" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-7 z 7
    Tytuł:
    Dynamics of Cu, Mn, Ni, Sr and Zn release during decomposition of four types of litter in headwater riparian forests in northern Poland
    Autorzy:
    Jonczak, J.
    Parzych, A.
    Sobisz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317603.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    heavy metal
    strontium
    black alder
    leaf litter
    decomposition
    dynamics
    copper
    manganese
    nickel
    zinc
    headwater area
    riparian forest
    Polska
    leaf litter decomposition
    headwater areas
    heavy metals
    Opis:
    The aim of the study was to compare the dynamics of Cu, Mn, Ni, Sr and Zn release during decomposition of leaves of Black alder (native material), Norway maple, Red oak and European beech (exogenous material) in the area of headwater riparian forests along the upper course of the Kamienna Creek (Northern Poland). Litter bag method was used in the experiment. Initial materials differed in terms of their chemical composition. Cu, Mn, Ni, Sr and Zn contents were low in general, and in fact, even a few times lower than limit values for decomposition rate. Different trends in the dynamics of the leaf metal content during decomposition were observed in particular tree species despite the fact, that every materials were exposed in the same site. Release dynamics was strongly affected by the content of metals in initial materials and in topsoil. Accumulation of Cu, Mn and Zn was observed during decomposition of poorest in the elements maple leaves, as well as Ni in alder leaves and Sr in the leaves of maple, alder and oak. In beech leaves we observed intensive leaching of Ni, whereas downward trends in the Cu concentration of beech leaves, as well as Mn and Zn in beech and oak leaves, were related to weight loss of the leaves. In some cases, the dynamics of metal release displayed a more complicated two- or three-stage character (release of Ni from maple and oak leaves; Cu from maple leaves; Sr from alder, maple and oak leaves; and Zn from alder and maple leaves).
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 193-200
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Formation and development of a 1st-order valley network in postglacial areas (the Dębnica catchment)
    Autorzy:
    Mazurek, M.
    Paluszkiewicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/294444.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    valley network
    erosional-denudational valleys
    unchanneled colluvial valley
    headwater alcoves
    Dębnica catchment
    Opis:
    This article describes the formation and development of the 1st-order valley network in the postglacial catchment of the Dębnica River (NW Poland). Its valley network is an example of a system of polygenetic depressions, and its 1st-order sections are comprised of denudational hollows and valleys, dissections, and erosional-denudational valleys. In the article, both landforms with no permanent flow and those nourished by groundwater and included in the river runoff network are characterised. In the course of their development, dry valleys have continued to grow in width and length, while the gradient of their bottom has decreased due to slope wash processes. In groundwater outflow zones, in turn, the modelling of their slopes indicate retreat as a result of seepage erosion and mass movements, which has led to the preservation of their convex parts and the development of a concave section at the foot, passing into the flat bottom of an alcove. In headwater alcoves, which mark the start of a valley or are inserted into older valley landforms, morphological contrasts are enhanced because of an increase in their width and depth, as well as changes in their cross-profile.
    Źródło:
    Landform Analysis; 2013, 22; 75-87
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics, structure and chemistry of litterfall in headwater riparian forest in the area of Middle Pomerania
    Autorzy:
    Jonczak, J.
    Olejniczak, M.
    Parzych, A.
    Sobisz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/15438.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    litter fall
    dynamics
    structure
    chemistry
    nutrient
    heavy metal
    headwater area
    riparian forest
    Pomeranian region
    Opis:
    The following research on plant litterfall mass, dynamics, structure and chemistry was conducted from 2012 to 2014, on a 40- to 86-year-old stand of black alder (Alnus glutinosa) growing in a headwater area of the upper part of the valley of the Kamienna Creek (Middle Pomerania). Litterfall was collected every month with 20 circular traps, dried untill constant weight, divided into fractions, weighed and analyzed. The annual amount of litterfall deposited on soil during the study period ranged from 3482.5 to 4106.9 kg·ha-1, showing a dynamics pattern typical of temperate decidous forests. Leaves constituted the major fraction of litter with share of between 78.0 and 81.6% in its total mass. The contribution (in %) of twigs was 4.9-5.6, flowers 2.8-8.3, fruits 0.2-0.9 and other components 7.6-9.2. The relatively stable environmental conditions of headwater areas and the absence of disrupting factors during the study period were reflected in the low temporal variability of litterfall mass, dynamics and chemical composition of its individual fractions. The average annual pH of litterfall was 4.33-4.57. In general, litter was relatively rich in nitrogen and calcium but poor in phosphorus, potassium and magnesium. The content of Fe, Al and Mn was characteristic for these elements and low when compared to the other macroelements. The low contents of Cu and Zn confirm limited anthropogenic contamination of the investigated ecosystem with these metals. The annual return of the elements to the soil formed a series C>N>Ca>K>Mg>P>Mn>Fe>Al>Zn>Sr>Cu. A relatively large influx to the soil was noticed for nitrogen and calcium. Meanwhile, it was low for potassium, magnesium and phosphorus.
    Źródło:
    Journal of Elementology; 2016, 21, 2
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sylvicultural procedures in catchment areas of the mountain streams as exemplified by the Skrzyczne massif in Poland
    Autorzy:
    Malek, S.
    Barszcz, J.
    Majsterkiewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/38536.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    catchment area
    mountain stream
    climatic zone
    vegetation zone
    Beskids Mountains
    Skrzyczne massif
    Polska
    headwater
    watercourse
    Opis:
    Extensive disintegration of spruce forests in the Beskidy Mts. in South Poland generates a need to regenerate sizeable areas as well as to rebuild forest stands which have defended themselves against breakdown. In practice, the magnitude of relevant management tasks does not allow for keeping up with the progressive destruction of forest, especially at higher altitudes, where natural regeneration does not occur as much as necessary. In addition, the species composition is limited to spruce, sometimes accompanied by beech and fir, whereas other species have a negligible share. What may be helpful in solving this problem is the method of regeneration of such areas and of establishment of under-canopy cultures, consisting of patchwork, multi-stage regeneration task performance, starting from the areas with the best chance of reforestation success and using the existing self-sown trees. Such areas undoubtedly include habitats with better water balance, i.e. humid habitats (in the case of larger areas, distinguished in the forest management plan as humid forest site types). The aim of the present study was to propose management of watercourses and headwater areas in the region of the Skrzyczne massif where the selected catchments are situated on the southern (the Malinowski Stream) and the northern (the Roztoka Czyrna stream) slopes of this massif. The research was carried out in August 2012 and included juxtaposition of available hydrological maps with actual field conditions along with identification of springs and streams and the course of their beds in order to update the existing data. The updating of the forest numerical maps in the existing databases of the State Forests IT System (SILP) included verification of the course of streams and determination of their nature (penament or periodic) with a division into the existing ones and the added ones. The data was recorded against the background of the division of the forest surface, contour lines, major roads, climate and plant floors and forest habitat types. The total length of streams was ascertained. The catchment areas and areas along their beds were determined by adopting variable distances from the beds, depending on climate and plant zones and the slope gradient. The adopted distances were: 5 m in the upper forest zone, 10 m in the middle forest zone, 20 m in the lower forest zone on both sides of the bed and in the headwater area within the radius of 10 m from a source. Specific sylvicultural procedures in headwater areas and in the neighbourhood of watercourses were described in each climatic and vegetation zones.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 1
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Walory turystyczne sieci dolinnej w dorzeczu Parsęty
    Tourist assets of valley network in Parsęta basin
    Autorzy:
    Mazurek, M.
    Paluszkiewicz, R.
    Piotrowska, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/87944.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Geograficzne
    Tematy:
    walory turystyczne
    sieć dolinna
    dolinki erozyjno-denudacyjne
    nisza źródliskowa
    Polska NW
    tourist assets
    valley network
    erosion-denudation valleys
    headwater alcoves
    NW Poland
    Opis:
    Walory turystyczne stanowią elementy środowiska przyrodniczego lub kulturowego, które decydują o atrakcyjności terenu, determinują aspekt poznawczy potencjalnego turysty, są uwzględniane w planach zagospodarowania przestrzennego i ochronie przyrody. O walorach turystycznych dorzecza Parsęty decyduje m.in. zróżnicowana struktura krajobrazu młodoglacjalnego. Charakterystycznym elementem środowiska przyrodniczego tego terenu jest sieć dolinna złożona z szeregu poligenetycznych obniżeń odziedziczonych po cyklu glacjalnym i peryglacjalnym. Najmłodszą część sieci drenażu stanowią dolinki erozyjno-denudacyjne i nisze źródliskowe. Elementy sieci dolinnej są silnie powiązane z pozostałymi składnikami środowiska przyrodniczego i decydują o georóżnorodności krajobrazu młodoglacjalnego. Walory krajobrazowe sieci dolinnej oraz uznanie części dolin jako obiektów ważnych w europejskiej sieci ekologicznej Natura 2000 wskazują na możliwości turystycznego wykorzystania tych form hydromorfologicznych.
    Tourist assets are a set of elements of the natural or cultural environment of an area that decide about its attractiveness, have a cognitive aspect for a potential tourist, and are considered in plans of spatial development and environmental protection. Among the tourist assets of Parsęta basin are a variety of valley landscapes. A characteristic element of the natural environment of this region is a valley network consisting of several polygenetic depressions left by the glacial-periglacial cycle. The youngest sections of this drainage network are erosiondenudation valleys and headwater alcoves. Elements of valley landscapes are closely connected with the remaining components of the natural environment and are an important factor determining the geodiversity of the postglacial landscape. A well-thought-out conception of their development and accessibility, including also damage-preventing measures, can certainly enrich the region’s tourist offer.
    Źródło:
    Prace Komisji Krajobrazu Kulturowego; 2010, 14; 229-242
    1896-1460
    2391-5293
    Pojawia się w:
    Prace Komisji Krajobrazu Kulturowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany składu chemicznego wód w strumieniach śródleśnej niszy źródliskowej w dolinie Kamiennej (Pomorze Środkowe)
    Changes of water chemistry in mid-forest headwater streams in the valley of the Kamienna (Middle Pomerania)
    Autorzy:
    Parzych, A.
    Jonczak, J.
    Sobisz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/989491.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Pomorze Srodkowe
    dolina Kamiennej
    nisze zrodliskowe
    strumienie lesne
    wody plynace
    wlasciwosci fizykochemiczne
    sklad chemiczny
    zmiany skladu chemicznego
    headwater areas
    springs
    water chemistry
    riparian forest
    Opis:
    The paper concerns changes of chemical composition of water in headwater streams in the valley of the Kamienna, left bank tributary of the Słupia River (54°19′N; 17°10′E). Water samples were collected in 2012 from three streams, in their upper, middle and lower course every month. Analysis included water temperature, pH, conductivity, and the content of dissolved oxygen, HCO3– , K+, Na+, Ca2+, Mg2+, NH4+, Cl–, NO3–, PO43– and SO42–. Water of the analysed streams was characterized by generally low concentration of solutes (tab. 1) and had bicarbonate−calcium character. The observed low variability of water temperature along the streams resulted from their shortness and rapid flow. Low variability was also observed in case of pH and Mg2+ content. Increasing trends downward the streams were noticed for dissolved oxygen, while decreasing changes were observed for HCO3–, NO3– and PO43–. The remaining components showed different trends in the individual streams, indicating importance of local−scale factors.
    Źródło:
    Sylwan; 2016, 160, 10; 871-880
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Właściwości materii organicznej gleb śródleśnych nisz źródliskowych w dolinie Kamiennej (Pomorze Środkowe)
    Properties of soil organic matter in soils of mid-forest spring niches in the Kamienna Creek valley (Middle Pomerania)
    Autorzy:
    Jonczak, J.
    Parzych, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/989393.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Pomorze Srodkowe
    dolina Kamiennej
    nisze zrodliskowe
    gleby lesne
    materia organiczna
    stopien rozkladu masy torfowej
    odczyn gleby
    zawartosc wegla organicznego
    zawartosc azotu ogolnego
    sklad frakcyjny
    absorbancja promieniowania
    headwater areas
    histosols
    soil organic matter
    Opis:
    The paper presents the result of the studies on the properties of soil organic matter in Sapric Histosols associated with mid−forest spring niches in the valley of the Kamienna Creek, left bank tributary of the Słupia River (northern Poland). We sampled five soil profiles at the depth of every 10 cm until the mineral bed was reached. We analyzed degree of peat mass decomposition, reaction and the content of organic matter, total organic carbon and total nitrogen. Fractional composition of soil organic matter was analyzed with Schnitzer method. We measured the absorbance at wavelenghts of 280, 465 and 665 nm in 0.01% alkaline solutions of humic acids and the absorbance ratios A2/6, A2/4 and A4/6 were calculated based on these data. The studied soils consisted of strongly and moderately decomposed alder and alder−sedge peat, which contained 309.7−829.0 g/kg of organic matter. The soils were moderately abundant in nitrogen and were characterized by low variability in pH (pHH2O 5.6−6.9). Soil organic matter was dominated by humins, contribution of which ranged from 71.5 to 91.9%. Humic acids constituted 4.9−22.1%, fulvic acids 1.9−6.7% and the most labile organic substances extracted during decalcification of samples (Cdek) – 0.2−1.1% (tab. 2). The observed relatively low degree of humification and quantitative predominance of humic acids over fulvic acids are features typical for riparian organic soils. High values of absorbance ratios of alkaline solutions of humic acids (tab. 3) indicate predominance of aliphatic structures over aromatic in their molecules, which is typical for weakly humified organic substances.
    Źródło:
    Sylwan; 2016, 160, 02; 135-143
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies