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Wyszukujesz frazę "forest fuel" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Trends in forest fuel accumulation in pine forests of Kyiv Polissya in Ukraine
    Autorzy:
    Harzhii, Roman V.
    Yavorovskyi, Petro P.
    Sydorenko, Serhii Н.
    Levchenko, Valery B.
    Tyshchenko, Olexandr M.
    Tertyshnyi, Anatolii P.
    Yakubenko, Borys Ye.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041249.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Pinus sylvestris L.
    pine stands
    forest fires
    litter
    forest fuel
    Opis:
    At present, forest fire research is becoming especially relevant in Ukraine. This study examines patterns of forest fuel accumulation in pine (Pinus sylvestris L.) stands that grow in different soil conditions with different pine stand structure. To estimate the load of forest fuel of different fractions, a combined methodology was used: the weighing method and the FIREMON (fuel load estimation) method. It was found that increase in surface forest fuel loads is not directly proportional to forest stands’ age. Fractional size distribution, capacity and loads of forest fuel depend on several factors, among which the greatest role is played by forestry characteristics of the pine stand. It was determined that in the forest site conditions of type C (fairly rich soils) in Kyiv Polissya, the share of forest litter compared to pine stands that grow in poor soil conditions (A) is smaller, ranging from 41% to 76% of the total forest fuel load. The mass proportion of the duff layer varies from 15% in young forest stands to 43% in mature stands. It was established that changes in forest fuel fractions for 1, 10, 100 and 1000 hours varied insignificantly with age rate. The share of substratum woody debris of 10 and 100 hours was insignificant and depended more on the forestry treatment regime on these sites. The mass proportion of coarse woody debris (1000 hours) was also insignificant, varying from 0% to 5.9% of the total load of surface fuel.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 2; 116-124
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potential forest fire risk evaluation in Poland
    Autorzy:
    Szczygieł, Ryszard
    Kwiatkowski, Mirosław
    Kołakowski, Bartłomiej
    Piwnicki, Józef
    Powiązania:
    https://bibliotekanauki.pl/articles/2041675.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    forest fire risk categorization
    stand flammability classes
    potential forest fire risk
    forest fuel models
    Opis:
    The term forest fire risk means the existence of such conditions that would make possible the occurrence of a fire in the forest environment. The base for the effectiveness of a forest fire protection system is the evaluation of the forest fire risk followed by adequate organization of the system. This article presents methods for determination of the forest susceptibility to fire known as potential forest fire risk. The below presented methods were developed by Forest Research Institute as the results of the projects commissioned by the General Directorate of State Forests. The forest fire risk category and stand flammability classes are the methods included here. The forest fire risk category was elaborated already in 1975 for the first time. Until today, after the last modification in 2008, it is the fundamental document for the polish forest fire protection system. The purpose of this modification was to increase the determination accuracy of the fire risk category of all polish forest, regardless of its ownership type and at the different administrative level. The categorization method, however, doesn’t reflect the fire risk in micro scale. The attempt to solve that problem was made in 2018 while developing the methodology of stand flammability classes. It was assumed that ground cover fuel models will be developed for the most flammable forest habitat types including ground cover types, dominant species, age class and geographical localisation.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 1; 39-45
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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