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    Wyświetlanie 1-5 z 5
    Tytuł:
    Specyfika problemowa nauk leśnych i metodyki badań w dziedzinie leśnictwa
    Challenges concerning terminology and methodology in forest sciences
    Autorzy:
    Wodzicki, T.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/45388.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    nauki lesne
    specyfika problemowa
    ekosystemy lesne
    nisze ekologiczne
    gospodarka lesna
    homeostaza
    interakcje czlowiek-ekosystem lesny
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potencjał terapeutyczny lasu - badania i gospodarka leśna
    The therapeutic potential of forests - research and forest management
    Autorzy:
    Wodzicki, T.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2136483.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    lasy
    potencjal terapeutyczny
    czlowiek
    nisze ekologiczne
    natura
    forest therapeutic potential
    human ecological niche
    Nature
    Opis:
    The therapeutic potential of the forest results mostly from the accumulation of volatile organic compounds produced by the forest plants. These compounds are found in the highest concentration in the air space between the soil and the tree canopy and they are important cofactors in the regulation of various physiological processes of the human body. Both, the chemical structure as well as the regulatory function of these substances, are already known, or have been studied by pharmacologists and biochemists. What is not known, however, is the spatial variability in concentration of these compounds in the air of forest ecosystems and its dependence on the genetic or developmental structure of the biocenosis. This presents a challenge, which can only be overcome by forest research institutions ready to adopt new methodology, which is needed in order to study the spatial distribution of therapeutic potential within the forest environment. The main outcome of such research should be updated guidelines for the management of silviculture. Some concepts useful for establishing appropriate research programs are suggested in this paper. In line with these concepts, aspects of evolution of the human ecological niche idea associated with forestry management, and the idea of the human place in nature, are also discussed.
    Źródło:
    Leśne Prace Badawcze; 2021, 82, 2; 69-74
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fitosocjologiczne zroznicowanie siedlisk gorskich a wymagania ekologiczne gatunkow domieszkowych
    Autorzy:
    Ambrozy, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/969166.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    siedliska lesne
    las mieszany gorski
    las legowy gorski
    gatunki domieszkowe
    bor mieszany gorski
    lasy gorskie
    fitosocjologia
    lesnictwo
    wymagania ekologiczne
    Źródło:
    Prace Instytutu Badawczego Leśnictwa. Seria A; 2001, 3[917-922]; 5-15
    0369-9870
    Pojawia się w:
    Prace Instytutu Badawczego Leśnictwa. Seria A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Awifauna lęgowa dojrzałych drzewostanów Puszczy Boreckiej i jej zmiany na przełomie XX i XXI wieku
    Breeding avifauna of mature forest stands in the Borki Forest and its dynamics at the turn of the 21st century
    Autorzy:
    Rakowski, G.
    Czarnocki, K.
    Ukalska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294672.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Puszcza Borecka
    lasy
    fauna
    ptaki
    gatunki legowe
    grupy ekologiczne
    zgrupowania zwierzat
    bogactwo gatunkowe
    zageszczenie zwierzat
    wykaz gatunkow
    Borki Forest
    bird assemblage structure
    species richness
    density changes
    forest habitats
    Opis:
    The composition and structure of the breeding bird community in the Borki Forest in north-eastern Poland were investigated during two separate periods: 1994–1996 and 2012–2014. Bird censuses were carried out in three plots located in mature oak-hornbeam, ash-alder and mixed coniferous forest stands. A standard combined mapping technique for estimating the number of breeding birds was applied. A total of 74 bird species bred at least once within any plot during 1994–1996 or 2012–2014. The structure of the bird assemblages on particular plots displayed a high degree of similarity, exceeding 75%, which means that they represent essentially the same bird community. However, the investigated assemblages have changed substantially over the 20 years. Both, the number of breeding bird species and the population densities on all plots, were much higher in 2012–2014 than in 1994–1996. The mean number of breeding species on all plots was over 50% higher in 2012–2014 than in 1994–1996, whereas the mean total density of breeding pairs increased by more than 60%. Total population densities on the plots increased as a result of an increase in population densities of individual bird species combined with an increase in the number of breeding species. Due to different rates of population growth for certain species, also the composition of dominating species group have changed. The observed changes in the avifauna of the Borki Forest were most probably due to an enrichment of the forest habitats structure, which was caused by natural factors, such as ageing of forest stands, forest succession and a change in water regime by beaver dams, as well as by forest management, including group felling within or in the vicinity of plots and uncovering of the forest edge.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy naturalne procesy ekologiczne w juwenilnej fazie rozwoju drzewostanu założonego sztucznie różnicują jego strukturę przestrzenną?
    Do natural processes at the juvenile stage of stand development differentiate the spatial structure of trees in artificially established forest stands?
    Autorzy:
    Szmyt, J.
    Korzeniewicz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317220.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    ekologia lasu
    drzewostany sosnowe
    drzewostany debowe
    wiezba poczatkowa
    procesy ekologiczne
    wydzielanie sie drzew
    drzewa lesne
    sosna
    dab
    rozmieszczenie drzew w przestrzeni
    piersnice drzew
    wysokosc drzew
    dlugosc korony
    spatial indices
    forest diversity
    self-thinning
    managed forests
    Opis:
    Structural diversity is one of the most interesting phenomena that have been studied by forest ecologists and practitioners. Amongst the different characteristics of forest structure, spatial diversity of trees and their attributes seem to be very important. The more spatially structured a population is, the higher its diversity in terms of size and species richness. Because most forests in Europe are managed and were artificially established, they are subjected to conversion processes turning them into more complex systems. The approach presented here aims at elucidating whether natural processes, such as self-thinning, can cause the self-differentiation of spatial structure in artificially planted stands. Our analyses focused on untended Scots pine and pedunculate oak stands in the juvenile phase of development and were based on spatially explicit structural indices for positioning and size differentiation (diameter, total height and crown length). The obtained results indicate that live trees were dispersed more or less regularly. Unlike the anglebased index, which mostly indicated randomness in tree location, a distance-based index showed clear regularity. We also found that the distribution of tree attributes auto-correlates to tree location as indicated by significantly lower index values compared to values resulting from random reassignment of the examined attributes. This low degree of spatial differentiation is further confirmed by the distribution of indices in differentiation classes. Our results allow us to conclude that, in the case of light demanding species (pine and oak), natural processes do not increase spatial diversity of the stand, although, both species showed a certain degree of deviation in this respect.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 171-179
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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