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    Wyświetlanie 1-8 z 8
    Tytuł:
    Investigations on the calorific c value of forest chips
    Badania wartości opałowej zrębków leśnych
    Autorzy:
    Gendek, A.
    Zychowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/56225.pdf
    Data publikacji:
    2014
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Źródło:
    Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2014, 63 Agric.Forest Eng.
    0208-5712
    Pojawia się w:
    Annals of Warsaw University of Life Sciences - SGGW. Agriculture
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of chipper knives sharpening on the forest chips quality
    Wpływ zaostrzenia noży rębarki na jakość zrębków leśnych
    Autorzy:
    Gendek, A.
    Nawrocka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/56312.pdf
    Data publikacji:
    2014
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    chip
    knife
    sharpening
    quality
    wood chip
    Źródło:
    Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2014, 64 Agric.Forest Eng.
    0208-5712
    Pojawia się w:
    Annals of Warsaw University of Life Sciences - SGGW. Agriculture
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ technologii pozyskania i składu zrębków leśnych na ich wartość opałową i zawartość popiołu
    Effect of harvest method and composition of wood chips on their caloric value and ash content
    Autorzy:
    Gendek, A.
    Malatak, J.
    Velebil, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/986640.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    biomasa lesna
    zrebki drzewne
    pozyskiwanie biomasy
    skladowanie
    wartosc opalowa
    zawartosc popiolu
    forest biomass
    forest residues
    composition of chips
    share of ash
    forest chips
    Opis:
    Wood chips composition and abundance of the impurities affecting the ash content are parameter of the chips quality that is important for the power plants. These parameters may be used as criteria in settlements between the supplier and the chipmaker. The determination of calorific value, ash content and share of individual elements in forest chips was undertaken. The wood chips obtained from the fragmentation of sawmill wastes and forest trees residues with various species compositions (Scots pine, multi−species and bundled Norway spruce residues) were investigated. The linear relationship between the ash content and the calorific value of the chips was determined. In all cases, the largest share (over 87%) in the composition of forest chips is assigned to the clean timber and wood particles with bark. The share of mineral impurities is within the range of 0.6−1.6%. The ash content in wood particles ranges 1.04−3.94% and is close to the values reported in the literature. In terms of ash content, the chips produced from bundled coniferous residues were the worst. The obtained results indicate that the best technology for obtaining high calorific value of dry wood chips (17.89−18.11 MJ/kg) with a low proportion of ash is the chipping of wood residues collected directly from the forest surface or from previously prepared piles. The least advantageous technology is the bundling of residues and their storage for several months (16.29 MJ/kg).
    Źródło:
    Sylwan; 2018, 162, 03; 248-257
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of seasonal dynamics of Mite (Acari) aggregation in pine forest litter and pine chips
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/60317.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2015, II/2
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mite (Acari) colonization of pine chips alone and pine chips supplemented with forest litter, peat and lignite in revitalization of degraded forest soils
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Gackowski, G.
    Kosakowski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/101127.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    soil regeneration
    mulching
    microarthropods
    bioindication
    Oribatida
    Opis:
    The aim of this study was to compare colonization of pine chips without supplements and pine chips supplemented with forest litter, peat and lignite by mites (Acari), and particularly oribatid mites (Oribatida) in a two-year cycle. The study was conducted in the years 2013-2014, on microplots established in a belt of trees in a nursery in Białe Błota within Bydgoszcz Forest District. The experiment was established on four microplots (1 x 1 m). It included the following variants: C - pine chips alone, Lf – pine chips inoculated with fresh forest litter, Lf+Pe – pine chips enriched with deacidified high peat (20%) (pH 5.5-6.5) and inoculated with the litter, Lf+Li - pine chips enriched with granulated lignite (20%) inoculated with the litter. In the first year of the study, mite abundance in the chips inoculated with forest litter was significantly higher than that on microplot C. In the second year of the experiment, the abundance of these microarthropods decreased probably due to unfavorable weather conditions. The most common group of mites were usually oribatid mites that accounted for 19.7 to 80.4% of all mites. An analysis of seasonal dynamics of Oribatida abundance over the entire study cycle revealed a clear increase in their numbers in non-supplemented pine chips only on the last sampling date. Oribatida abundance in Lf variant was similar at the beginning and end of the study. Contrary to that, their number decreased in the chips supplemented with peat, and particularly those enriched with lignite. In total, 36 species of oribatid mites were identified on all microplots. The greatest boost in species diversity after the introduction of forest litter was observed in Lf chips and the smallest in Lf + Li variant. Oribatula tibialis was the most common oribatid mite in the investigated substrates. Low numbers of Oppiella nova and Tectocepheus velatus, the species having trophic associations with fungi, may indicate poor colonization of the chips, particularly those enriched with lignite, by saprotrophic organisms.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/2; 1577-1590
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bilans energetyczny oraz czasochłonność wybranych elementów w łańcuchu technologicznym pozyskiwania biomasy leśnej
    Energy balance and time-consumption of selected components in technological chain of forest biomass harvesting
    Autorzy:
    Gałęzia, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/991700.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    biomasa lesna
    zrebki drzewne
    pozyskiwanie biomasy
    transport
    lancuch technologiczny
    bilans energetyczny
    czasochlonnosc
    forest biomass
    chips
    energy
    Opis:
    The purpose of the research performed in the Augustowska Primeval Forest (NE Poland) was to estimate the energy spent on preparation and transportation of energetic biomass in form of chips made of final felling residues and comparing it with an energetic output received at the power plant in nearby Białystok. Data was collected in form of working's day activity study on 18 clear−cut areas during 67 hours of research. Research proved that currently used methods of harvesting, processing and transportation of forest biomass in form of chips are highly efficient from point of view of energy balance. However, this efficiency can even be raised by localizing of felling sites closer to the power plant. In such case, energy spent on chipping would probably be the most significant input.
    Źródło:
    Sylwan; 2013, 157, 06; 419-424
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The presence of mites (Acari) in pine wood chips enriched with peat and lignite inoculated with forest litter and irrigated
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Gackowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/100933.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    soil regeneration
    wood chips
    soil organic horizon
    mesofauna
    Oribatida
    Opis:
    The aim of the study was to analyze the presence of mites (Acari), with special focus on indicator oribatid mites (Oribatida), in control pine wood chips and pine wood chips enriched with peat and lignite inoculated with forest litter and irrigated. The study was conducted in 2013 on microplots (1 x 1 m) located within a belt of trees in a nursery in Białe Błota. The experiments included the following variants: C - pine wood chips, Ec - pine wood chips inoculated with forest litter, Ec+Pe - pine wood chips enriched with deacidified high peat (20%) (pH 5.5-6.5) and inoculated with forest litter, Ec+Ca - pine wood chips enriched with granulated lignite (20%) (granule size 1-10 mm) inoculated with forest litter. The addition of forest litter caused an increase in total number of mites in the control pine wood chips and those enriched with peat. Mites belonging to Mesostigmata order prevailed in control chips and those enriched with forest litter and peat, while Oribatida were dominant mites in the other variants. Considering the results for the entire year, 20% addition of peat and lignite negatively affected the presence of oribatid mites, thus indicating a reduced biological activity of the substrates. The populations of oribatid mites on all microplots were clearly dominated by Oribatula tibialis, and Tectocepheus velatus and Adoristes ovatus were slightly less common.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, II/1; 483-493
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mite (Acari) occurrence in selected substrates used for a restoration of degraded soils
    Autorzy:
    Klimek, A.
    Chachaj, B.
    Gackowski, G.
    Dąbrowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/101510.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    forest litter
    orchard litter
    wood chips
    reintroduction
    soil regeneration
    oribatid mites
    Opis:
    The number and groups of mites (Acari) and species composition of oribatid mites (Oribatida) were analysed in three different substrates used for the restoration of degraded soils: (1) pine forest litter, (2) apple orchard litter, and (3) pine chips. The study was conducted in the years 2011-2012, on microplots of the area of 1m2 , established in a belt of trees of a nursery in Białe Błota (Bydgoszcz Forest District). Average biannual mite density per 50 cm3 of the investigated substrates ranged from 14.6 to 54.43 individuals. The highest numbers of mites were found in shredded forest litter and the lowest in pine chips. The most abundant mites in the studied material were oribatid mites, accounting for 57.3 % of these arthropods. The highest number of oribatid mites was found in the forest litter (28), and the lowest (20) in pine chips. The number of species in both types of litter was similar in the first and second year of the study, but it rose three times in the pine chips substrate over the study period. Oribatid species in the litter substrates were dominated by the eurytopic Tectocepheus velatus, and the most abundant species in the pine chips substrate was Oribatula tibialis. The experiment indicated a possibility of practical use of the shredded litter in the reintroduction of soil mesofauna and soil regeneration. This may facilitate the soil inoculation process, e.g., by using seeders specially adapted for this purpose. Additionally, a quick colonization of wood chips by acarofauna may suggest the possibility of using them as an excellent substrate for soil regeneration.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2018, II/1; 277-291
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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