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    Wyświetlanie 1-4 z 4
    Tytuł:
    Ekonomiczne wskaźniki trwałej gospodarki leśnej - teoria i praktyka
    Autorzy:
    Gruchała, A.
    Piekutin, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023630.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    gospodarka zrownowazona
    gospodarka lesna
    lesnictwo
    sustainable forest management
    criteria for ecodevelopment
    economic indicators of sustainable
    development
    certification systems
    national green calculus
    Opis:
    The objective of this paper is to review the criteria and indicators currently used for the assessment of forest management and to compare them with the criteria and indicators recommended in the economic literature. There are discrepancies between the types of indicators proposed in the economic literature and those applied in practice, which often result from the adoption of different concepts of sustainability and/or definitions of the welfare. It appears advisable to supplement the set of natural criteria and indicators with economic ones, so that the ability to self−finance the forest economy should not be forfeited.
    Źródło:
    Sylwan; 2004, 148, 11; 51-58
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przyczyny i kierunki przeklasyfikowywania gruntów nieleśnych na leśne w świetle badań ankietowych
    Causes and directions of reclassification of non-forest lands into forest lands according to the survey results
    Autorzy:
    Wysocka-Fijorek, E.
    Kaliszewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/973334.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    polityka lesna
    zalesianie
    grunty nielesne
    zmiana klasyfikacji gruntu
    polityka rolna
    badania ankietowe
    leśnictwo
    rozwój obszarów wiejskich
    afforestation
    forestry policy
    agricultural policy
    national programme of the forest cover extension
    rural development
    Opis:
    In Poland, there are large discrepancies between the area of forest lands recorded in land−use registers of local authorities and the actual state of forest area in the field. These discrepancies were estimated to 800,000 hectares in 2016, which is 2.5% of the land area of Poland. The diver−gences result primarily from different definitions of a forest in forest regulations and legislation concerning land−use registry and the insufficient update of land registry databases. The aim of the paper is to define the major causes of reclassification of non−forest lands into forest lands and to determine the origin of forests on those lands. The study is based on a mail questionnaire survey carried out in all local public authorities all over the country (altogether 314 rural and 66 municipal counties). The questions focused on manners lands were used in a county, including the area of artificial and natural afforestation and the area of lands reclassified into forest lands over the period 2009−2013, as well as causes of such reclassification. Altogether 232 responses were collected (61.1%), 122 of which contained data of sufficiently good quality. The results show that afforestation of non−forest lands were mostly carried out in an artificial way. Reclassification into forest lands was conducted almost exclusively within rural counties. The reclassified lands were largely regenerated by natural succession. The key factor of land reclassification were works related to forest management planning in non−state owned forests. Afforestation carried out within the Rural Development Programme, co−financed from EU funding, was the second most important factor. In case of afforestation, land reclassification is obligatory no later than in the fifth year after a new forest was planted. The paper concludes with suggestions that there are no effective legal regulations that would make land owners to reclassify their afforested lands into forest lands, except cases of agricultural lands afforestation within the Rural Development Programme. Therefore, it is recommended to seek to cover all non−state owned forests with forest management plans and to obtain the compliance of land registries with the real situation in the field.
    Źródło:
    Sylwan; 2017, 161, 06; 460-466
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Status taksonomiczny borecznika harcyńskiego - Gilpinia hercyniae (Hartig) oraz morfologia, bionomia i ekologia borecznika świerkowca - Gilpinia polytoma (Hartig) (Hymenoptera, Diprionidae). Cz. 3.
    The taxonomic status of Gilpinia hercyniae (Hartig) - morphology, bionomics and ecology of Gilpinia polytoma (Hartig) (Hymenoptera, Diprionidae). Part III
    Autorzy:
    Borowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023632.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    borecznik swierkowiec
    borecznikowate
    ekologia zwierzat
    entomologia lesna
    morfologia
    Gilpinia hercyniae
    lesnictwo
    Gilpinia polytoma
    borecznik harcynski
    Diprionidae
    bionomia
    sustainable forest management
    criteria for ecodevelopment
    economic indicators of sustainable
    development
    certification systems
    national green calculus
    Opis:
    The objective of this paper is to review the criteria and indicators currently used for the assessment of forest management and to compare them with the criteria and indicators recommended in the economic literature. There are discrepancies between the types of indicators proposed in the economic literature and those applied in practice, which often result from the adoption of different concepts of sustainability and/or definitions of the welfare. It appears advisable to supplement the set of natural criteria and indicators with economic ones, so that the ability to self−finance the forest economy should not be forfeited.
    Źródło:
    Sylwan; 2004, 148, 11; 3-8
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena wpływu roślinożernych ssaków kopytnych na odnowienie lasu w Białowieskim Parku Narodowym
    The impact of herbivorous ungulates on forest regeneration in the Białowieża National Park
    Autorzy:
    Kweczlich, I.
    Miścicki, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023208.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    szkody w lesie
    oddzialywanie na srodowisko
    odnowienia lasu
    metody badan
    Alces alces
    lesnictwo
    Bialowieski Park Narodowy
    jelen europejski
    ssaki kopytne
    Bison bonasus
    los
    zubr
    Capreolus capreolus
    Cervus elaphus
    sarna
    ungulate herbivores
    forest regeneration
    damage
    development
    comparative sample plots
    białowieża
    national park
    strict protection
    Opis:
    Measurement results carried out on 30 comparative sample plots in 2000−2002 demonstrated negative effect of ungulate herbivores on the development of forest regeneration in the strictly protected area the Białowieża National Park. The tree height index permitted to state that cervidas and bisons were the damage−causing agents. Other indices (density, tree height sum and species diversity) were insufficient to assess the effect of wild boars.
    Źródło:
    Sylwan; 2004, 148, 06; 18-29
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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