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    Wyświetlanie 1-4 z 4
    Tytuł:
    Sukcesja wtórna drzew w krajobrazie wydmowym stałej powierzchni badawczej Glinki w świetle analizy GIS
    Secondary succession of trees in the dune landscape of the "Glinki" long-term research area - analysis with GIS
    Autorzy:
    Sewerniak, P.
    Mendyk, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311058.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    poligony wojskowe
    stale powierzchnie obserwacyjne
    wydmy
    sukcesja roslin
    drzewa
    rozmieszczenie przestrzenne
    analiza przestrzenna
    relief
    slope aspect
    Podzols
    military area
    spatial analysis
    Opis:
    The aim of the study was to present the main characteristics of the “Glinki” research area together with results of the first measurements on tree number, density, distribution and species composition carried out in 2011. The research was conducted in a free-of-forest management part of the Toruń military area which is located in one of the biggest inland dune fields of Europe. The “Glinki” research area was established in 2011 and consists of two plots (together 26.3 ha), which are in close proximity to each other. After the last fire in 1991, secondary succession has been the main factor shaping vegetation on both plots. For every plot, the location of all trees of at least 1 m height (560 in plot I and 292 in plot II) was determined. These measurements were subjected to spatial analysis in ArcGIS 9.3 with special emphasis on the exposure of the dune slopes. The main tree species on both plots were Scots pine, Pinus sylvestris, and birch, Betula pendula, (82 % and 17 % of all trees respectively). Tree density 20 years after the last fire was very low (32 trees/ha), which mainly resulted from the lack of a sufficient source of seeds in the close vicinity of the plots during the first years after the fire. We also found that tree distribution was related to the main direction of seed inflow and land relief. Tree density was much higher on dune slopes with a northern exposure when compared to other slope exposures, which resulted from different site conditions on the different slopes.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 2; 122-128
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena długodystansowego rozsiewu rokitnika zwyczajnego (Hippophae rhamnoides L.) na zwałowisku wewnętrznym Kopalni Węgla Brunatnego Bełchatów
    Assessment of sea buckthorn (Hippophae rhamnoides L.) long distance dispersal on the internal waste heap of the Belchatow lignite mine
    Autorzy:
    Bolibok, L.
    Kubiak, M.
    Michalski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292163.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    rokitnik zwyczajny
    Hippophae rhamnoides
    rozsiew dlugodystansowy
    rekultywacja terenow
    zwalowiska wewnetrzne
    Kopalnia Wegla Brunatnego Belchatow
    long distance dispersal
    sea-buckthorn
    soil conditions
    slope aspect
    Opis:
    Long distance dispersal is a key process occurring in plant communities and is particularly important for pioneer species like sea-buckthorn (Hippophaë rhamnoides L.) which survival strongly depends on colonizing newly created post-disturbance habitats. Sea-buckthorn, a cluster-forming shrub, is commonly used in Poland in the reclamation of soil-less areas devastated the by mining industry and for these areas a generative expansion of planted populations is usually observed. The main objective of this study was to assess the long-distance dispersal of this species in areas previously disturbed by industrial activity. Our observations were made on a 223.75 ha large section of the internal waste heap of the Bełchatów lignite mine, Central Poland. The area was colonized by sea-buckthorn specimens originating from a population planted on the nearby external waste heap. During the search for newly established sea-buckthorn clusters, their position and size were recorded and the preferences for specific site conditions were assessed using the Ivlev's electivity index. New specimen were observed at distances between 600 m and 3600 m from their potential seed source. The mean cluster density was 1.37 ha-1. The observed pattern of long distance dispersal is linked with to behavior of frugivorous birds. The largest cluster densities were observed along ditches (9.83 ha-1) and on open areas with less developed plant cover, while the lowest cluster density occurred in afforested areas (0.51 ha-1). Poor sandy substrate reduced the probability of plant establishment compared to richer loamy sands. There appeared to be no influence of slope aspect on the probability of sea-buckthorn establishment.
    Źródło:
    Leśne Prace Badawcze; 2018, 79, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anomalie temperatury powietrza w Lasach Doświadczalnych SGGW w Rogowie w latach 1924–2015
    Air temperature anomalies in experimental forests in Rogow in 1924–2015
    Autorzy:
    Chojnacka-Ożga, L.
    Ożga, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292182.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    meteorologia
    lasy
    pomiary meteorologiczne
    pomiary temperatury
    temperatura powietrza
    anomalie termiczne
    zmiany temperatury
    lata 1924-2015
    Lasy Doswiadczalne SGGW w Rogowie
    long distance dispersal
    sea-buckthorn
    soil conditions
    slope aspect
    Opis:
    Long distance dispersal is a key process occurring in plant communities and is particularly important for pioneer species like sea-buckthorn (Hippophaë rhamnoides L.) which survival strongly depends on colonizing newly created post-disturbance habitats. Sea-buckthorn, a cluster-forming shrub, is commonly used in Poland in the reclamation of soil-less areas devastated the by mining industry and for these areas a generative expansion of planted populations is usually observed. The main objective of this study was to assess the long-distance dispersal of this species in areas previously disturbed by industrial activity. Our observations were made on a 223.75 ha large section of the internal waste heap of the Bełchatów lignite mine, Central Poland. The area was colonized by sea-buckthorn specimens originating from a population planted on the nearby external waste heap. During the search for newly established sea-buckthorn clusters, their position and size were recorded and the preferences for specific site conditions were assessed using the Ivlev's electivity index. New specimen were observed at distances between 600 m and 3600 m from their potential seed source. The mean cluster density was 1.37 ha-1. The observed pattern of long distance dispersal is linked with to behavior of frugivorous birds. The largest cluster densities were observed along ditches (9.83 ha-1) and on open areas with less developed plant cover, while the lowest cluster density occurred in afforested areas (0.51 ha-1). Poor sandy substrate reduced the probability of plant establishment compared to richer loamy sands. There appeared to be no influence of slope aspect on the probability of sea-buckthorn establishment.
    Źródło:
    Leśne Prace Badawcze; 2018, 79, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ rzeźby terenu na bonitację i cechy wzrostowe drzewostanów sosnowych na wydmach Kotliny Toruńskiej
    Impact of land relief on site index and growth parameters of Scots pine stands on inland dunes in the Torun Basin
    Autorzy:
    Sewerniak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989617.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Kotlina Torunska
    rzezba terenu
    ekspozycja terenu
    drzewostany sosnowe
    sosna zwyczajna
    Pinus sylvestris
    wzrost roslin
    wysokosc drzew
    piersnice drzew
    smuklosc drzew
    bonitacja drzewostanow
    topography
    pinus sylvestris
    slope aspect
    tree growth
    forest site
    soil
    inland dunes
    Opis:
    The aim of the study was to determine the impact of land relief on site index and growth parameters (height, diameter, slenderness) of Scots pine (Pinus sylvestris) stands on inland dunes in the Toruń Basin (N Poland). The study was conducted on 150 plots situated on north− and south−facing dune slopes (54 pairs of twin plots) as well as in intra−dune depressions (42 plots). Height and diameter of ten the thickest pines per 0.1 hectare was measured, and next site index as a potential height of a stand at the age of 100 years was calculated. As the results of the used equation, site index was strongly (R²=0.58) negatively biased to age, so the bias was removed using an elaborated regression model. For stands older than ca. 20 years, the clear higher site index values as well as higher heights and diameters were found for intra−dune depressions than for slopes of the two studied aspects. This was explained by the occurrence of much more fertile and moister soils in depressions. The only age class for which the advantage of site index and growth parameters was not stated for depressions was the youngest class (≤20 years old). This was likely caused by the competitive impact on young pines of Calamagrostis epigejos which prefers intra−dune depressions on inland dunes and forms in forest floor usually dense cover in this position. Impact of contrasting slope aspect was clearly related in the study to age of a stand. For the youngest studied age class both site index values as well as heights and diameters were lower on north− than on south−facing slopes. This was explained by the effect of weeds which form more dense cover on slopes of this aspect than on sunny slopes. For older stands; however higher site index values as well as heights and diameters were revealed for north−facing slopes, due to pines likely took advantage of higher moisture of soils occurring in this place. With reference to slenderness, regardless stand age the parameter was regularly the highest for north− than both for south−facing slopes and depressions. Because of the revealed distinct higher productivity of intra−dune depressions in normally dry and poor in nutrients dune landscape, it could be reasonable to use the depressions to introduce admixtures of broadleaved tree species into pine monocultures on inland dunes.
    Źródło:
    Sylwan; 2016, 160, 08; 647-655
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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