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Wyszukujesz frazę "growth management" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Wzrost i struktura drzewostanów mieszanych sosnowo-dębowego typu lasu i podstawy organizacji w nich gospodarstwa leśnego
    Growth and structure of mixed pine-oak stands and silvicultural principles for organization of their management
    Autorzy:
    Gierlinski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/821475.pdf
    Data publikacji:
    1962
    Wydawca:
    Polskie Towarzystwo Leśne
    Źródło:
    Sylwan; 1962, 106, 06
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany tendencji wzrostowych głównych lasotwórczych gatunków drzew w Europie i obszarach górskich Polski oraz ich przyczyny Część II. Przypuszczalne przyczyny zmian tendencji wzrostowych
    Changes in growth trends of the main forest tree species in Europe and mountain regions in Poland and possible causes Part II. Possible causes of changes in growth trends
    Autorzy:
    Jaworski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/972811.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    czynniki srodowiska
    gatunki lasotworcze
    Polska
    Quercus
    lesnictwo
    Picea abies
    zanieczyszczenia powietrza
    Europa
    Pinus sylvestris
    czynniki klimatyczne
    wzrost roslin
    buk zwyczajny
    Abies alba
    sosna zwyczajna
    dab
    jodla
    Fagus sylvatica
    przyrost drzew
    drzewa lesne
    swierk pospolity
    increment
    silvicultural management methods
    climate warming
    so2 deposition
    Opis:
    The causes of changes in the growth of European single− and multi−species stands that have been recently reported are seen in the changes in land use including forests, the effect of silvicultural management meth−ods including the use of fertilisers and liming, natural disturbances, damage caused by game, changes of cli−matic conditions particularly the impact of the global climate warming, as well as air−borne deposition.
    Źródło:
    Sylwan; 2003, 147, 07; 69-74
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aktywność żerowiskowa nietoperzy w różnych fazach rozwojowych drzewostanów sosny zwyczajnej
    Foraging activity of bats in Scots pine stands in different growth stages
    Autorzy:
    Węgiel, A.
    Grzywiński, W.
    Ciechanowski, M.
    Jaros, R.
    Kmiecik, A.
    Kmiecik, P.
    Wegiel, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/989345.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany sosnowe
    sosna zwyczajna
    Pinus sylvestris
    fazy rozwojowe
    zreby
    uprawy sosnowe
    drzewostany sredniowiekowe
    drzewostany dojrzale
    nietoperze
    Chiroptera
    roznorodnosc gatunkowa
    aktywnosc zerowania
    chiroptera
    foraging activity
    habitat use
    forest management
    pinus sylvestris
    western poland
    Opis:
    Scots pine (Pinus sylvestris L.) is economically the most important tree species in Polish forestry. Congeneric pine stands have a quite low level of biodiversity, and logging with clear sites may even cause their further decline. It is very important to discover the influence of clear−cuttings in managed pine stands on different groups of organisms. One of them are bats which play an important role in forest biotopes as a regulator of insect pests. The aim of this paper is to compare the foraging activity of bats in pine stands of different stages of growth. The study was carried out in three complexes of pine forests in western Poland: Drawska Forest, Notecka Forest and Dolnośląskie Forests. Four types of growth phases were studied: clear−cut sites (Z), young plantations in the age 2−5 years (U), 41−60−years−old stands (III) and mature stands in the age over 80 years (V). The study of the foraging bat activity was conducted with broadband ultrasound detectors Pettersson D−1000X within 3 hours after sunset in summer periods of 2013 and 2014. The recordings were analyzed with BatSound software. Total 19 180 bat passes were recorded on all 120 sampling plots. 11 bat species: Nyctalus noctula, Pipistrellus pipistrellus, Eptesicus serotinus, P. nathusii, Myotis myotis, P. pygmaeus, M. nattereri, Barbastella barbastellus, N. leisleri, E. nilssonii and Vespertilio murinus and four groups of species: NEV (Nyctalus, Eptesicus, Vespertilio), MSP (Myotis), PSP (Pipistrellus), and PLE (Plecotus) were recognized (tab. 1). The dominant was common noctule N. noctula (71.5%). The highest foraging activity of bats was recorded in open areas: clear sites and plantations (fig. 1), next in mature stands and middle−aged stands. The obtained results suggest that bats can adapt to a mosaic of habitats created by clear−cutting harvesting system in managed pine forests.
    Źródło:
    Sylwan; 2016, 160, 09; 767-776
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Struktura płci i przyrost populacji jelenia Cervus elaphus w Puszczy Białowieskiej – porównanie dwóch metod oceny
    Sex structure and growth of Cervus elaphus population in the Bialowieza Forest – comparison of two assessment methods
    Autorzy:
    Gryz, J.
    Krauze-Gryz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/985923.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lowiectwo
    Puszcza Bialowieska
    zwierzeta lowne
    jelen europejski
    Cervus elaphus
    populacje zwierzat
    struktura populacji
    struktura plciowa
    wielkosc populacji
    metody badan
    obserwacje caloroczne
    fotopulapki
    trail cameras
    camera trapping
    all−year−round observations
    game management
    Opis:
    Data on sex structure and growth of the population is crucial for proper game management. Camera traps, which are of reasonably low cost, but very efficient, can potentially measure the aforementioned parameters. The paper objectives was to assess the share of bucks, does and calves in red deer Cervus elaphus population in the area of the Białowieża Forest. Two methods were used: camera traps and a traditional method of all−year−round observations. The study was conducted in the years 2011−2015 in three forest districts and the Białowieża National Park. Reconyx trail cameras were exposed in one location for approximately 30 days, then moved to a new place. Altogether, trail cameras were exposed in 761 spots, at least 500 m apart one from another. Analyses were based on material collected between June 1st to September 31st when sex and age identification were the most reliable and hunting season had yet not started. Additionally, all−year−round observations of animals were done by foresters and scientists in the whole forest area, species, sex and age were noted in the special forms. The number of observers was similar to that of exposed trail cameras. Sex and age structure of red deer population changed between years, but according to both methods does were more numerous than bucks. According to trail cameras, share of bucks was on average 42 vs. 32% (data for all years combined), and a population growth was 39−60 calves/100 does, depending on a year. According to all−year−round observation, share of bucks was 26%, of does 53% and there were 37 calves/100 does. The dominance of does over bucks is difficult to explain as the sex structure at birth is 1:1. The does are more susceptible to predation and are culled more often. As data from trail cameras showed lower disproportion, we may assume that those results were more reliable. Trail cameras can collect data all the time, regardless the season, time of a day and weather conditions. Pictures can be analysed in details and observations verified if necessary. Their biggest disadvantage is price (especially when we assume that all−year−round observations can be done as a part of work duties by forest service), and risk of theft or damage.
    Źródło:
    Sylwan; 2018, 162, 11; 965-968
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ sposobu postępowania z pozostałościami zrębowymi i przygotowania gleby na zrębie na wzrost sosny zwyczajnej (Pinus sylvestris L.) w 6-letniej uprawie
    Effects of logging slash management methods and soil preparation methods on the clear-cut on growth of 6-year-old Scots pine (Pinus sylvestris L.) stand
    Autorzy:
    Żybura, H.
    Aleksandrowicz-Trzcińska, M.
    Drozdowski, S.
    Wołczyk, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/989272.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    zreby
    pozostalosci zrebowe
    postepowanie z pozostalosciami zrebowymi
    przygotowanie gleby
    odnowienia lasu
    odnowienia przez sadzenie
    sosna zwyczajna
    Pinus sylvestris
    uprawy sosnowe
    wzrost roslin
    przezywalnosc
    zageszczenie drzew
    logging slash
    planting
    scots pine
    soil preparation
    Opis:
    Different methods of logging slash management (LSM) and methods of soil preparation (MSP) can create different conditions for the growth of forest trees. This occurs through variation in soil aeration, tree nutrition or microbial conditions. These factors are modified by climate, soil fertility, treats from insects or fungal pathogens and renewed species. The aim of this study was to compare effects of three LSM methods: 1) crushing and mixing with the soil by Mery Crusher, 2) chopping and leaving on the soil surface, and 3) removal from the clear−cut, and three MSP: 1) double−mouldboard forest plough LPz−75, 2) active plough U−162, and 3) forest mill FAO−FAR FV 4088 on biometric parameters, density and survival of six−years old Scots pine seedlings. Field research was conducted in Narol Forest District (south−eastern Poland). The soil in the study area was classified as brown podzolic, formed on loose sands with typical mor humus.The experiment was established by planting 10 000 one−year−old pine seedlings per hectare, after clear cut and followed by a two−factor block design consisting of nine variants distinguished on the basis of LSM and MSP randomly assigned to each of the three blocks. Tree height and root collar diameter were measured three times, at the end of 1st, 3rd and 6th growing season. The results showed no statistically significant differences in the size of the analyzed parameters of planted seedlings. Seedlings in the variant with site preparation by crusher and forest mill were slightly higher and thicker. This indicates the better trophic conditions in that variant. LSM did not affect either seedlings density or their survival. A slightly higher survival rate and tree density occurred in variants with crusher regardless of soil preparation method. It follows that, all presented experimental variants give similar results. Therefore, selection of the most appropriate methods of site and soil preparation should primarily respect ecological and economic indicators, and such local factors as microclimate, mainly precipitation, site fertility and threats from pests and fungal diseases.
    Źródło:
    Sylwan; 2016, 160, 04; 267-276
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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