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    Wyświetlanie 1-8 z 8
    Tytuł:
    Wnioski z posiedzenia Komisji Zagospodarowania Lasu Zarzadu Glownego PTL na temat: Zalesianie gruntow porolnych [16-17 maja 1995 r., RDLP Bialystok]
    Autorzy:
    Gradzki, T.
    Kulak, S.
    Sierota, Z.
    Sobczak, R.
    Tomczyk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/818326.pdf
    Data publikacji:
    1996
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    zalesianie
    grunty porolne
    konferencje
    lesnictwo
    Bialystok konferencja
    zagospodarowanie lasu
    Źródło:
    Sylwan; 1996, 140, 05; 53-55
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przejmowanie lasow i gruntow przeznaczonych do zalesienia na przykladzie RDLP Bialystok
    Autorzy:
    Gatkiewicz, T.
    Zbrozek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/815587.pdf
    Data publikacji:
    1996
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    przejmowanie gruntow
    przepisy prawne
    przejmowanie lasow
    RDLP Bialystok
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    lesnictwo
    Źródło:
    Sylwan; 1996, 140, 05; 51-52
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rekreacyjna funkcja lasów Nadleśnictwa Krynki w opinii publicznej
    Recreational function of forests in the Krynki Forest District in the public opinion
    Autorzy:
    Gołos, P.
    Sikora, A.T.
    Konieczny, A.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/979375.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lasy
    funkcje lasu
    funkcje rekreacyjne
    zagospodarowanie rekreacyjne
    opinia publiczna
    leśnictwo
    Nadleśnictwo Krynki
    RDLP Białystok
    timber quality variation
    defects
    pinus sylvesrtis
    Opis:
    The aim of the research was to determine the impact of selected habitat and age features on the qualitative properties of Scots pine (Pinus sylvestris L.). The research was carried out on forest stands from the Olesno, Wymiarki and Kalisz Pomorski forest districts (western Poland). The collected data provided information on technical and dimensional properties as well as quality classes for logs from Scots pine stands. The severity of the occurrence of seven basic wood defects, identified on the perimeter and length of the model log was identified and described. The collected data was used to determine the distribution of defect groups. For distributions of defect groups, normal distribution criteria were met. For the Scots pine assortments, the ANOVA showed that the hypothesis of the occurrence of an equal number of defects on the side of the logs in three separated classes of WA0, WB0 and WC0 of the quality of the raw material should be rejected. For the Tukey test, the results indicate that there is no reason to reject this hypothesis. The obtained p−value in this case is 0.09 for WB0 and WC0. There was no influence of the diameter of the logs and the habitat on the number of defects. Number of defect groups is correlated with the distance from the butt in Kalisz Pomorski and Wymiarki forest districts but not in Olesno. In that case the increase in the number of defect groups has its maximum in the zone of 6−8 m of the log length.
    Źródło:
    Sylwan; 2019, 163, 11; 913-923
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie modelu ryzyka uszkodzenia drzewostanu przez wiatr do oceny prawdopodobieństwa lokalizacji szkód w lasach Regionalnej Dyrekcji Lasów Państwowych w Białymstoku
    Application of the wind damage risk model for the assessment of the probability of the location of damage to forests of the Regional Directorate of the State Forests in Bialystok
    Autorzy:
    Bruchwald, A.
    Dmyterko, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/985727.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    wiatry
    szkody w lesie
    drzewostany
    ryzyko uszkodzenia
    ocena ryzyka
    modele ryzyka uszkodzenia
    RDLP Bialystok
    wind damage risk model
    wind damage risk factor
    Opis:
    In June 2016, a hurricane damaged the forests of the Regional Directorate of the State Forests in Białystok (eastern Poland), resulting in the removal of approximately 1.9 million cubic meters of wind−fallen and wind−broken trees and deadwood by the end of 2018. The research material was obtained from the database of the State Forests Information System and used to assess the functioning of the wind damage risk model. The wind damage risk model determines the value of damage risk factor Wr for each stand ranging from 0 to 3; a higher value indicates a higher risk of damage to the stand. The damage risk factor allowed to create six damage risk classes, with a width of 0.5 each and to assign individual stands of the forest district to one of the classes. The areal share of damaged stands was calculated for each class. In 2015, i.e. before the hurricane, the share of stands in the highest damage risk class VI ranged from 0.1% to 3.5%. After the hurricane in 2016, the areal share of damaged stands was calculated for each class, the largest share (the largest damage) being in class VI, while the share of the most damaged stands were found in the following forest districts: Dojlidy – 71%, Supraśl – 79% and Żednia – 87%. In 9 other forest districts, the area of damaged stands in class VI also exceeded 70%. The wind damage risk model for the stand presented in the paper allows identifying stands where damage is very likely to occur, when the wind comes. This may limit the level of wind damage through, in the first place, the rebuilding of stands classified to the highest wind damage risk factor class.
    Źródło:
    Sylwan; 2019, 163, 08; 629-636
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pochodzenie drzewostanów świerkowych (Picea abies L. Karst.) z Puszczy Białowieskiej na tle regionu RDLP Białystok na podstawie analiz mitochondrialnego DNA
    Origin of the Norway spruce (Picea abies L. Karst.) stands from Bialowieza Forest at the level of Bialystok Regional Directorate of the State Forests based on mitochondrial DNA analysis
    Autorzy:
    Nowakowska, J.A.
    Łukaszewicz, J.
    Borys, M.
    Tereba, A.
    Konecka, A.
    Zawadzka, A.
    Sułkowska, M.
    Zajączkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/987121.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany swierkowe
    drzewa lesne
    swierk pospolity
    Picea abies
    markery genetyczne
    DNA mitochondrialny
    pochodzenie roslin
    zmiennosc genetyczna
    RDLP Bialystok
    genetic diversity
    mitochondrial dna marker
    postglacial migration routes
    białowieża forest
    Opis:
    Considered to be the most natural of all other Polish stands Picea abies in Białowieża Forest has suffered severely of bark beetle damages for decades. In order to find out some historical events in native Norway spruce stands diversity at regional level, we carried out the study on poly− morphism with DNA markers and performed Principal Coordinate Analysis (PCoA) on the basis of genetic distance matrix. Two ranges (i.e. Baltico−Nordic and Hercyno−Carpathian) of Norway spruce cover north−eastern and southern Poland, respectively. The spruceless zone separates the these two ranges in lowland Poland. From genetic point of view, the Baltico−Nordic P. abies populations mainly harbor mitochondrial haplotype ‘c', whereas the spruces from the Hercyno− −Carpathian range – haplotype ‘a'. Until recently, the Białowieża Forest has been considered to belong to the northern range of spruce occurrence in Europe. Seven populations from Biało− wieża Forest were studied (two of them from the Strict Reserve in Białowieski National Park) according to mitochondrial DNA diversity, and compared with genetic diversity found in 24 other populations located in Białystok Regional Directorate of the State Forests (north−eastern Poland). All studied spruce populations were more than 100 years old and were of natural origin. As result, the spruces from the Białowieża Forest harbored three mitochondrial haplotypes of the nad1 gene (‘c', ‘a' and ‘a1'), with the haplotype ‘a' being more frequently present (>51%) than the hap− lotype ‘c'. The spruce stands from Białowieża Forest have the highest gene diversity (h Nei=0.527) comparing to the other stands from the Białystok RDSF. The PCoA proved the particularity of the spruces from Białowieża Forest grouping them into one cluster of genetic similarity. Our data demonstrated that most of Norway spruces populations from Białystok RDSF harbor haplotype ‘c', which confirms their historical relationship with the Baltico−Nordic range of P. abies in Europe, while most spruces from Białowieża Forest have different historic origin, because they share high frequency of the southern haplotype ‘a'. It also turned out that Norway spruce pop− ulations from two different European ranges met in lowland Poland after the last glacial period, as proved by the presence of two mitochondrial haplotypes ‘a' and ‘c'. It can be assumed, that the spruceless zone was created by human activity in the past millennia. The results of all molecular analyses confirmed the unique character of spruces of Białowieża Forest, which is distinguished by the greater richness of the gene pool in comparison to the region of Białystok RDSF as well as good adaptation to local environmental conditions.
    Źródło:
    Sylwan; 2017, 161, 01; 40-51
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Regionalne zróżnicowanie użytkowania przedrębnego w Polsce
    Regional diversity in intermediate harvest level in Poland
    Autorzy:
    Borecki, T.
    Pieniak, D.
    Wójcik, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008751.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    RDLP Szczecinek
    lesnictwo
    uzytkowanie lasu
    uzytkowanie przedrebne
    zroznicowanie przestrzenne
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    RDLP Bialystok
    RDLP Katowice
    RDLP Krakow
    RDLP Krosno
    RDLP Lublin
    RDLP Lodz
    RDLP Olsztyn
    RDLP Pila
    RDLP Poznan
    RDLP Szczecin
    RDLP Torun
    RDLP Wroclaw
    RDLP Zielona Gora
    RDLP Gdansk
    RDLP Radom
    RDLP Warszawa
    intermediate harvest
    regional differences
    improvement cutting
    Opis:
    Study analyses the regional differences in the level of intermediate harvest in Scots pine stands based on the data obtained from 337 forest districts. Analysis focuses on the impact of natural conditions and regional practices on the intensity of improvement cutting.
    Źródło:
    Sylwan; 2012, 156, 10; 732-740
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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