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    Wyświetlanie 1-9 z 9
    Tytuł:
    Cele hodowlane i ich realizacja w przebudowie drzewostanów
    Silvicultural aims and their realisation in stand conversion
    Autorzy:
    Bernadzki, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1018678.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    przebudowa drzewostanow
    lesnictwo
    cele hodowlane
    stand conversion
    silvicultural aim
    forest succession
    pioneer species
    silvicultural risk
    Opis:
    Owing to the unpredictability of changes in a habitat, a silvicultural aim should be treated as a "vision" of the future stand and adjusted in the course of its development. To meet the rational principles of stand conversion, it is necessary to fully use the natural processes occurring in forest ecosystems. More attention should be given to the species of early succession stages, which are better adapted to the changing habitat conditions, and richer species composition should be ensured to disperse silvicultural risks.
    Źródło:
    Sylwan; 2006, 150, 12; 3-11
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biegaczowate (Carabidae, Col.) drzewostanów Puszczy Piskiej zniszczonej przez huragan - rok "zero"
    Autorzy:
    Skłodowski, J.
    Zdzioch, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022635.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    fauna
    drzewostany pokleskowe
    owady
    Puszcza Piska
    lesnictwo
    biegaczowate
    Carabidae
    carabidae
    windthrow
    windbreak
    hurricane
    forest
    regeneration succession
    Opis:
    Exceedingly violent winds can result in windbreak and in windthrow. It has happened in summer of 2002 in Pisz Forest District (north part of Poland). Strong wind damaged about 30 000 hectares of pine forest. In most situations, damaging wind resulted in windthrow rather than windbreak. In total 30 plots were selected for the studies, 15 plots in Pisz forest (damaged by wind) and 15 control plots in Maskulińskie District Forest (not damaged by wind). There were distinguished 5 age variants of stands, all of them in three recapitulations. The five age classes of stands were: I class (20−30 years old), II class (30−40 y.), III class (40−50 y.), IV class (50−70 y.) and V class (above 70 years old). In total 4 000 carabids individuals belonging to 46 species were caught during studies. The wards analy− sis showed substantial diference of carabid assemblages occurring in damaged and non damaged forest. In damaged forest, small zoophages, hemizoophages, an open area or eurtyopic species, xerophilus species were frequently observed. Substantial differences in mean individual biomass of assemblages occurring in damaged and non damaged forest were also observed.
    Źródło:
    Sylwan; 2005, 149, 05; 43-51
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wtórna sukcesja lasu na polanach górskich wyłączonych z gospodarki pasterskiej
    Secondary succession of forest on mountain glades excluded from pasture economy
    Autorzy:
    Ciurzycki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023695.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    sukcesja roslin
    sukcesja wtorna
    lesnictwo
    polany popasterskie
    gory
    mountain glades
    pasturage abandonment
    secondary vegetation succession
    forest emerging
    nature protection
    Opis:
    The paper reviews the process of secondary vegetation succession and forest emerging on mountain glades after pasturage abandonment, investigations of this problem and its importance for nature protection.
    Źródło:
    Sylwan; 2004, 148, 11; 59-66
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Średnia biomasa osobnicza zgrupowań biegaczowatych w produkcyjnym cyklu drzewostanów bukowych w Dolinie Ruhry (zachodnie Niemcy)
    Mean individual biomass of carabid assemblages in the productive cycle of beech forests in the Ruhr Valley (Western Germany)
    Autorzy:
    Schreiner, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1006304.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Dolina Ruhry
    drzewostany bukowe
    owady
    biegaczowate
    Carabidae
    lownosc
    srednia biomasa osobnicza
    carabidae
    mib
    beech forest
    succession
    logistic growth
    Opis:
    Number of carabid beetles, length of C. violaceus elytra and MIB of all carabids were studied subsequent to pitfall−trapping in 14 beech stands of increasing age (1−165 years) in Western Germany. The beech stands seemed to offer fairly constant feeding conditions for C. violaceus (and relatively small decrease in rather low level of degradation in the plantation). In total, 5,536 carabid individuals were trapped, which revealed significant increase of MIB (from 156.88 to 733.63 mg) following the logistic growth function. Due to incomplete degradation of the stands (on 'rich' soil and after using specific beech−harvesting techniques), there is a high baseline MIB at t=0 and an early onset of regenerative succession. The curve's gradient is steep and MIB reaches final value of about 650 mg in timber stands. Such high value may be explained by the good quality of loam soils in the area under study. In conclusion, logistic MIB function was calculated that describes regenerative beech succession on 'rich' soil and may help foresters to identify areas of disturbed succession.
    Źródło:
    Sylwan; 2012, 156, 11; 833-842
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sukcesja biegaczowatych w procesie spontanicznej restytucji lasu na gruntach porolnych
    Succession of carabids in the natural restitution of forest on former agricultural land
    Autorzy:
    Skłodkowski, J.
    Sławski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026686.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    fauna
    drzewostany
    odnowienia lasu
    grunty porolne
    lesnictwo
    biegaczowate
    odnowienia naturalne
    sukcesja
    Carabidae
    carabidae
    forest restitution
    spontaneous succession
    afforestation
    farmland
    mib index
    Opis:
    Investigations were carried out in 2000−2001 on the succession of carabid assemblages accompanying the spontaneous succession of pine stands on former agricultural land. Observations concerning changes in the number of carabid individuals and species, proportion of individuals in the groups: developmental, ecological, trophic, geographical, moisture preference, wing differences, as well as the mean individual biomass (MIB) indicated that the development of carabid assemblages during the spontaneous succession of stands can be compared to the regeneration process of the carabid fauna that accompany afforestation and that the direction of this development is similar to the development of carabid assemblages that accompany afforestation of farmlands.
    Źródło:
    Sylwan; 2003, 147, 05; 47-57
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Las na gruncie porolnym - oczekiwania i rzeczywistość
    Forest on post-agricultural land - expectations and reality
    Autorzy:
    Krawczyk, R.
    Kowalczuk, S.
    Ksepko, M.
    Sierota, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2136482.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    grunty porolne
    zalesianie
    gospodarka lesna
    lasy porolne
    stan zdrowotny lasu
    sukcesja roslin
    odnowienia naturalne
    post-agriculture lands
    afforestation
    managed forests
    forest health
    succession
    natural regeneration
    Opis:
    In Central Europe, deforestation led to a reduction of forest area by almost 80%, compared to the original area, by the beginning of the 20th century. At this point in time, a period of intensive reforestation began in an effort to restore forest areas. This process of reforestation, especially on post-agricultural land, continues to this day. This article examines reforestation and natural regeneration on former farmland and the factors that influence the current state as well as the future growth of the forest. Ancient and contemporary views on the functioning of stands on post-agricultural land created by both, natural and forced succession (i.e. afforestation), are recalled. In Poland, this issue primarily concerns managed state forests, which cover an area of over 2 million hectares. We discuss the differences in the development of these stands resulting from the history of agricultural cultivation, the type of afforestation, the influence of environmental factors as well as biotic threats to their development. Furthermore, the need to change the silviculture-, protection- and endowment-based approach to forest management in stands on post-agricultural land is highlighted.
    Źródło:
    Leśne Prace Badawcze; 2021, 82, 2; 75-86
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Puszcza Białowieska jako ostoja różnorodności biologicznej
    Białowieża Forest as a biodiversity hotspot
    Autorzy:
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/989062.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    ochrona przyrody
    ochrona bioroznorodnosci
    bogactwo przyrodnicze
    rosliny naczyniowe
    walory przyrodnicze
    active management approach
    biodiversity loss
    environmental change
    forest management
    natural succession
    strict protection
    Opis:
    Białowieża Forest (BF) is widely known for its outstanding natural values. The debate about the management/protection model, able to maintain all relevant values of BF on a sustainable basis, has a very long history. Currently, the main role in this debate is played by groups and organizations claiming that the major threat for the biological richness of BF is related to local forest management. In this paper, an attempt is made to verify this thesis. The extensive literature research reveals that vascular plants are one of the most threatened (and best documented) groups of organisms occurring in BF. It was found, for example, that in case of Serratulo−Pinetum (one of the most important woodland community type occurring in BF) the floristic diversity declines at the rate 0.6 species per year. However, similar situation concerns many other groups of species (e.g. lichens) as well. The recession of many species does not take place in the managed part of the BF only. This problem concerns also the areas which, since a long time already, have been subjected to the strict protection, like the ‘Strict Reserve' of the Białowieża National Park (comprising ca. 7% of the BF, under strict protection since ca. 100 years). Several factors and agents responsible for the general deterioration of natural values of BF were identified. Among other things, many authors underline the negative impacts of natural, successional processes taking part in areas which were ‘liberated' from the direct human impacts. Such processes are a direct cause of loss among many herbaceous species, particularly helio− and termophilous plants. Another important reasons for decreasing trends in many important elements of the local biodiversity are: strong reduction of open and semi−open areas (disappearance of the so called ‘cultural landscapes'), climate change, air pollution, deer overabundance, compositional impoverishment of many tree stands, invasive species of plants and animals. In conclusion, there are many factors responsible for decreasing diversity of BF and most of them have nothing to do with the local forest management. To preserve possibly high levels of the natural values of BF for future generations, a wise and complex conservation strategy is needed. As many other similar examples from different places over the world clearly show, the core element of such a strategy should be the principle of active management approach and not the out of action principle of ‘doing nothing'.
    Źródło:
    Sylwan; 2017, 161, 12; 971-981
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany w szacie roślinnej rezerwatu Grąd Radziwiłłowski (Wysoczyzna Drohiczyńska) w latach 1971−2008
    Changes in the vegetation of the Grad Radziwillowski nature reserve [Drohiczynska Upland] between 1971 and 2008
    Autorzy:
    Ciosek, M.T.
    Chursowicz, B.
    Borkowska, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009206.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    rezerwaty przyrody
    rezerwat Grad Radziwillowski
    fitosocjologia
    zbiorowiska roslinne
    flora
    zmiany skladu gatunkowego
    dynamics of forest stand
    succession
    quantitative and qualitative proportions of the flora
    southern podlasie region
    drohiczyńska upland.
    Opis:
    Studies on changes in the vegetation of the Grąd Radziwiłłowski nature reserve were carried out between 2005 and 2008. The nature reserve is situated in the southern part of the Podlasie region, near Radziwiłłówka village (Mielnik county). The results were compared with the research conducted by Sokołowski in 1971 and 1989 [Sokołowski 1993] and with data from establishment statement of the nature reserve. Structure and physiognomy of the forest stand as well as quantitative and qualitative proportions in the flora have changed in the studied period. The vegetation of the reserve ought to be monitored.
    Źródło:
    Sylwan; 2010, 154, 04; 275-281
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    O przebudowie drzewostanow z roznorodnoscia biologiczna w tle
    Forest conversion in the context of biodiversity
    Autorzy:
    Rykowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009192.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    gospodarka lesna
    przebudowa drzewostanow
    regulacja prawna
    Zasady hodowli lasu
    przebudowa calkowita
    przebudowa czesciowa
    gospodarczy typ drzewostanu
    roznorodnosc biologiczna
    stand conversion
    biodiversity
    economic stand type
    disturbance
    spontaneous transformation
    succession
    forest of reference
    Opis:
    Paper presents the issue of stand conversion and refers it to political and technical regulations. Different objectives and forms of stand conversion in the context of silviculture concepts were characterized. Stand economic type as a target and tool of traditional forest management practice in Poland was discussed. Paper presents examples of spontaneous stand conversion as a result of biotic or abiotic disturbances. On the background of these analyses, the need to test some scientific hypotheses has been presented. The necessity to create the network of the reference forest areas as pattern of natural conversion of forest ecosystem in changing environment to learn from and follow them by forest management practice.
    Źródło:
    Sylwan; 2010, 154, 04; 219-233
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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