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    Wyświetlanie 1-7 z 7
    Tytuł:
    Rola zasad hodowli lasu w kształtowaniu trwałej wielofunkcyjności polskich lasów i leśnictwa
    The role of the principles of forest management in the shaping of the sustainable multifunctionality of Polish forests and forestry
    Autorzy:
    Zajączkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/973283.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    hodowla lasu
    lasy
    Zasady hodowli lasu
    wielofunkcyjność
    leśnictwo
    principles of forestry management
    multifunctional forests and forestry
    Opis:
    Against the background of the solutions laid down in successive editions of Principles of forest management the paper presents their vital role in the shaping of the sustainable multifunctionality of Polish forests and forest management. It has been demonstrated that that the „Principles” of 1953/1955, which were based on ecological foundations and approached forest as an ecosystem, allowed to meet the economic and social goals of forest management. The subsequent editions of the „Principles” were open to any proposal that takes account of the nature and forest−related knowledge, as well as of social and economic conditions of functioning of the forest holding.
    Źródło:
    Sylwan; 2003, 147, 04; 3-9
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kilka odniesień teoretycznych do formułowanych zasad użytkowania lasu
    Autorzy:
    Paschalis-Jakubowicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023580.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    gospodarka zrownowazona
    gospodarka lesna
    uzytkowanie lasu
    lesnictwo
    theory and principles of sustainable forest management
    sustainable use of forest resources
    Opis:
    The paper provides the results of the analysis of the selected concepts of solutions aimed at developing the theoretical foundations of sustainable use of forest resources. On the basis of an overview of recent achievements in this area the author proposes a novel system of developing the principles of sustainable use of forest resources assuming that the principles of sustainable management are fully observed.
    Źródło:
    Sylwan; 2004, 148, 05; 22-29
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ekonomiczne aspekty lesnictwa w krajach Unii Europejskiej i w Polsce
    Autorzy:
    Klocek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1178262.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Unia Europejska
    Polska
    lesnictwo
    ekonomika i organizacja
    evolution of goals
    principles of sustainability
    forest management
    economic−financial condition
    forest
    production
    costs and effects
    Opis:
    The first part of the paper presents a synthetic approach to the evolving goals and accompanying major principles of forest management. The other parts of the paper concentrate on the assessment of current economic and financial conditions of forest management in the state−owned forests on the example of the selected countries (West Germany, Austria, Finland and Poland), which differ in organisation systems of forest management. The last part of the paper contains a number of statements of a general nature.
    Źródło:
    Sylwan; 2003, 147, 01; 1-11
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza możliwości implementacji certyfikacji w systemie użytkowania leśnych surowców i produktów niedrzewnych. I. Założenia metodyczne i przegląd literatury
    Analysis of the possibility of implementing certification system for utilisation of non-wood forest products. I. Methodological assumptions and literature review
    Autorzy:
    Staniszewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/973897.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    certyfikacja
    leśnictwo
    uboczne użytkowanie lasu
    surowce leśne
    leśne surowce niedrzewne
    non−wood forest products
    forest resources
    certification
    forest use regulation
    forest use principles
    Opis:
    The article presents an analysis of selected conditions of certification in forestry in relation to the non−wood forest products utilisation. They were the basis for presenting selected governmental and international organisations concerned with the development, implementation and monitoring of standards relating to the forest−timber industry and environmental issues. The main categories of certification schemes were identified and analysed: certification of forest management, social certification, organic certification and certification of product quality. The analysis of both global and regional problems related to certification of non−wood products, as well as a thorough analysis of the relevant regulations and legislation, demonstrated the need to treat certification as an important tool in the general concept of non−wood forest products utilisation.
    Źródło:
    Sylwan; 2011, 155, 04; 253-260
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kierunki doskonalenia zasad urządzania lasu w celu realizacji trwale zrównoważonej gospodarki leśnej
    Directions of improvement of the forest management planning principles for pursuing sustainable forest management
    Autorzy:
    Głaz, J.
    Czerepko, J.
    Jabłoński, M.
    Zajączkowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1012423.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    gospodarka zrownowazona
    urzadzanie lasu
    las wielofunkcyjny
    ochrona bioroznorodnosci
    gospodarka lesna
    doskonalenie
    plan urzadzania lasu
    lesnictwo
    forest planning
    improvement of forest planning principles
    sustainable development
    Opis:
    The paper presents the proposals of improvement of the forest management planning principles aimed at efficient acquisition of data on the condition of forests and projected economic priorities with special emphasis on Natura 2000 areas, timber production for energy purposes, development of new techniques and technologies, carbon dioxide sequestration and climate changes.
    Źródło:
    Sylwan; 2008, 152, 01; 37-44
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza możliwości implementacji certyfikacji w systemie użytkowania leśnych surowców i produktów niedrzewnych. II. Wyniki badań
    Analysis of the possibility of implementing certification system for utilisation of non-wood forest products. II. The results
    Autorzy:
    Staniszewski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/973660.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    certyfikacja
    certyfikacja PEFC
    leśnictwo
    uboczne użytkowanie lasu
    surowce leśne
    leśne surowce niedrzewne
    non−wood forest products
    certification
    regulation of forest utilisation
    forest utilisation principles
    Opis:
    The article presents the research findings concerning the concept of forest management with regard to forest utilisation in the PEFC system. A set of developed rules of procedure in the use of non−wood forest products was presented, the observance of which was to enable the unit audited by the PEFC to meet the requirements set by the PEFC and obtain a certificate. The rules were analysed with a particular emphasis on aspects such as allowing access to stands and harvest of non−wood forest products and the factors limiting their use, harvest of forest utility plants and edible mushrooms, birch sap extraction and production of charcoal in retorts. Certification should be viewed as an integral part of the new strategy of non−wood forest use, as a tool whose effectiveness influences and will influence the development of the forest goods market and consequently the rural development.
    Źródło:
    Sylwan; 2011, 155, 05; 313-321
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trzebieże wczesne w Lasach Państwowych w Polsce – rozwój czy regres?
    Early thinnings in the State Forests in Poland – development or regress?
    Autorzy:
    Łukaszewicz, J.
    Zajączkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/980288.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    hodowla lasu
    lasy panstwowe
    zabiegi pielegnacyjne
    trzebiez wczesna
    drzewa lesne
    selekcja pozytywna
    drzewa przyszlosciowe
    stand tending operation
    principles of silviculture
    positive selection
    future trees
    stand stability
    Opis:
    Early thinning operations performed in relatively young stands, the most important element of the forest ecosystem, have a much greater impact on their stability than late thinning performed in the stands of older age classes. As regards early thinning, the method of tending cuts based on positive selection (selection and promotion of superior trees) developed by Ilmurzynski has formally been operating in the Polish ‘Principles of silviculture’ and forest practice in the State Forests since 1961. The paper analyses changes in the provisions of subsequent editions of the ‘Principles of silviculture’ (from 1953 to 2012) concerning early thinning operations and their implementation into forest practice in the stands managed by the State Forests. A gradual departure from the superior tree selection method as well as properly performed positive selection is observed. These changes could already be found in 1979. The lack of consistency in determining the aim of thinning treatments makes each of them a separate part of the operation. Because of the lack of consistent selection and promotion of specific trees, the conditions for positive selection are not met. The current ‘Principles of silviculture’ [2012] operating in the State Forests do not recommend the consistent selection of superior trees, but advise early thinning treatments based on the principle of negative selection corresponding to weak upper thinning (grade D according to method of the Association of German Forest Experimental Station from 1902). However in the practice, early thinning treatments similar to moderate lower thinning are often carried out instead (grade B according to method of the Association of German Forest Experimental Station from 1902). Such recommendations and operations regarding early thinning are the main cause of the lack of stability and resistance of stands to the impact of abiotic and biotic factors contributing to reducing the productivity of the forest. We consider it necessary to introduce modifications depending on the use of elements of the future tree method (reduction of the number of superior trees per ha) and group thinning (selection and permanent identification of the groups of superior trees). We propose the following number of superior trees per ha selected during the first early thinning operation: 200−300 for pine, 250−400 for spruce, 100−200 for oak, and 150−200 for beech. The current dissonance between the operating provisions and their arbitrary implementation into forest practice does not increase the silvicultural quality resulting from thinning treatments, which translates into the stability and productivity of stands. To prevent such a situation, we recommend conducting a series of regular training courses for forest staff on permanent thinning sample plots in all forest districts.
    Źródło:
    Sylwan; 2019, 163, 01; 13-24
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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