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    Tytuł:
    Deadwood in the oak forests of the Left Bank Forest-steppe of Ukraine
    Autorzy:
    Yarotskiy, Volodymyr Yu.
    Pasternak, Volodymyr P.
    Nazarenko, Vitalii V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041948.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    coarse woody debris
    dead trees (snags)
    dead logs
    growing stock
    stand
    Opis:
    Deadwood is an important component of forest ecosystems, and difference in the deadwood carbon stock depends on many variables including forest management. The aim of our study was to determine the patterns of formation of deadwood stocks in oak (Quercus robur L.) forests in the Left Bank Forest-steppe of Ukraine. As an outcome of the research, the data on deadwood parameters were obtained. The growth characteristics and coarse woody debris (CWD) characteristics were measured on intensive monitoring and inventory plots. Assessment of morphometric parameters of the CWD in oak stands was carried out by measuring diameters at top and bottom cut and length; to determine the carbon content, deadwood density was used. The distribution of deadwood by tree species, sizes and stages of decomposition was defined. The stock of dead trees (snags) in oak forest is 15.2 m3/ha and that of logs is 21.5 m3/ha. The carbon accumulation in oak forest stands in the Left Bank Forest-steppe of Ukraine was 3.4 and 4.5 t C/ha in dead trees and logs, respectively. The dynamics of deadwood stocks according to the results of repeated observations was given.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 4; 247-254
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pomiar zapasu grubizny z wykorzystaniem zdjęć lotniczych
    Inventory of merchantable timber volume using aerial photography
    Autorzy:
    Miścicki, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1012035.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    inwentaryzacja
    zapas grubizny
    drzewostany
    lesnictwo
    powierzchnie probne
    zdjecia lotnicze
    pomiary
    growing stock
    aerial photography
    inventory
    permanent sample plot
    airphoto sample plot
    two−phase
    method
    Opis:
    Inventory of the growing stock in the territory of the Milicz Forest District was made using the combined, two−phase method. 1980 sample plots were measured on aerial photographs that constituted Phase I of the inventory. Phase II sampling consisted of 267 ground (permanent) plots and corresponding airphoto plots depending on their location in the photograph. In the airphoto sample plots, the following characteristics were measured (or controlled): tree height and age, degree of crown cover, species composition. Taking into consideration the relationship between the results of standing volume measurements on ground sample plots and stand characteristics on airphotos, the growing stock in age sub−classes and in the entire Forest District was calculated. Using aerial photography in forest survey and growing stock inventory, the cost of forest management planning operations is likely to be comparable to the cost of such operations performed in the traditional way.
    Źródło:
    Sylwan; 2009, 153, 06; 373-385
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aktualizacja zapasu drzewostanów na podstawie danych z SILP i stałych kontrolnych powierzchni próbnych
    Updating of stands timber volume on the basis of the data from State Forest IT system [SILP] and permanent control sample plots
    Autorzy:
    Miścicki, S.
    Nowicka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013391.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    przyrost miazszosci
    aktualizacja
    lesnictwo
    powierzchnie probne
    uzytkowanie rebne
    System Informatyczny Lasow Panstwowych
    zapas drzewostanu
    silp
    permanent sample plots
    growing stock
    update
    utilization
    current periodical volume increment
    bayesian estimation
    Opis:
    The results of measurements of permanent control sample plots (skpp) were used to update the growing stock of individual stands in the State Forests IT System (SILP). The calculation was based on Bayesian estimation. Several update methods were used differing in the principles of estimating the initial growing stock. The growing stock update results for the whole forest and individual age classes were similar for all the applied methods. The volume of the estimated increment and the recorded cuts in SILP was lower compared to the measurement results in skpp. In addition to the periodical correction of the SILP data, the application of skpp would enable reduction in the intervals between the growing stock inventories (to 20−30 years) performed on the basis of a relatively large number of temporary sample plots.
    Źródło:
    Sylwan; 2008, 152, 11; 26-39
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Etat według potrzeb hodowlanych dla różnowiekowych lasów o strukturze przerębowej lub do niej zbliżonej
    Prescribed yield determined by silvicultural needs for uneven-aged forests with selection or similar structures
    Autorzy:
    Poznański, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1011824.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany roznowiekowe
    gospodarka lesna
    rebnie stopniowe udoskonalone
    przyrost miazszosci
    rebnie przerebowe
    etat wg potrzeb hodowlanych
    lesnictwo
    zapas drewna
    etat rebny
    selection felling system
    improved shelterwood felling system
    prescribed yield according to silvicultural
    needs
    growing stock
    volume increment
    Opis:
    Management activities in uneven−aged forests are based on a prescribed yield subjectively set by an inspector according to silvicultural needs. The findings show that in uneven−aged selection stands prescribed yield was calculated at a lower level than in irregular shelterwood stands. Prescribed yield determined by silvicultural needs differ from actual yield, so it does not meet the actual silvicultural needs of uneven−aged stands and therefore should not be recommended for use in the forest management practice any more.
    Źródło:
    Sylwan; 2009, 153, 03; 158-163
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ efektu brzegowego drogi na cechy drzewostanów sosnowych Puszczy Noteckiej
    Edge-effect of the road on the Scots pine stands characteristics in the Notecka Forest
    Autorzy:
    Grajewski, S.M.
    Mizera, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989417.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Notecka
    drogi publiczne
    drogi o malym natezeniu ruchu
    oddzialywanie na srodowisko
    efekt brzegowy
    drzewostany sosnowe
    cechy taksacyjne
    zasobnosc drzewostanu
    miazszosc drzew
    road−edge effect
    diameter at breast height
    growing stock
    forest stand value
    very low−volume roads
    Opis:
    The development of the transportation network brings both benefits and threats. Much attention is paid to soil contamination with trace elements, difficulties in animal migration, noise propagation or synanthropisation of the vegetation cover. This paper deals with the effect of provincial road No. 150 on inventory characteristics of neighboring Scots pine stands in the Notecka Forest (western Poland) – one of the larger forest complexes in Europe. Twelve rectangular experimental sites were established perpendicular to the road axis, called belt transects. Each transect consisted of 3−4 plots located at different distances from the pavement edge (fig.). Measurements and estimations were recorded for the plots. Values from all belt transects were approximated within plots at the same distance from the road and then compared using statistical methods. Observations were conducted in Scots pine stands growing on fresh coniferous forest (Bśw) and fresh mixed coniferous forest (BMśw) sites. Reduced stand density that resulted in decreased basal area, volume and growth rates were observed in the immediate vicinity of the road compared to the forest interior. Individual trees were thicker, but more often burdened with defects decreasing timber value. Any considerable effect of the road on tree height wasn't observed. The above mentioned changes were more evident in poorer habitat conditions, while the location in relation to the road had no significant effect. Modified lighting conditions are probably the main cause of these changes. At the edge of Scots pine stands in the Notecka Forest, a unique ecotone has formed under the influence of the provincial road.
    Źródło:
    Sylwan; 2016, 160, 11; 915-922
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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