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Wyświetlanie 1-2 z 2
Tytuł:
Struktura, dynamika i właściwości opadu roślinnego w 110-letnim drzewostanie bukowym z domieszką sosny i świerka
Structure, dynamics and properties of litterfall in a 110-year-old beech stand with admixture of pine and spruce
Autorzy:
Jonczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/973709.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany bukowo-sosnowo-swierkowe
dynamika opadu
sklad frakcyjny
leśnictwo
właściwości chemiczne
opad roślinny
skład frakcyjny
drzewostany bukowo-sosnowo-świerkowe
litterfall
nutrient cycling
mixed forests
north-west Poland
Opis:
The aim of this study was to characterise the aboveground litterfall in a 110−year−old beech stand with admixture of pine and spruce based on a 3−year measurement series. The studies were conducted in 2007−2009 in the Leśny Dwór Forest District (NW Poland). The input of litterfall during the study period amounted from 3.234 to 4.871 t/ha/year. Beech, pine and spruce contributed in the total litterfall mass in 50.8−70.1%, 11.4−11.9% and 1.6−24.0% respectively. Beech leaves were the main component of litterfall, accounting for 39.6−52.4%. In the masting year for beech (2009), seed coats and beech seeds had also a significant share in the mass of litterfall. The bark beetle outbreak, which occurred during the study period, influenced the dynamics and properties of spruce needle fall. In the outbreak year (2008), a several fold increase in the mass of needle fall, mainly green needles, from spruce trees was observed. The beech leaf fall compared with other components of the stand was rich in phosphorus, potassium and calcium, and moderately rich in nitrogen, had the lowest C:N and C:P ratios and the highest pH value. The needle fall of pine and spruce was much less rich in nutrients and strongly acidic. It also showed a broad range of C:N and C:P values.
Źródło:
Sylwan; 2011, 155, 11; 760-768
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tempo dekompozycji opadu organicznego podczas przemian siedlisk łęgowych
Decomposition rate of the litter fall in the course of riparian habitat changes
Autorzy:
Kawałko, D.
Halarewicz, A.
Kaszubkiewicz, J.
Jezierski, P.
Powiązania:
https://bibliotekanauki.pl/articles/987145.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Park Krajobrazowy Dolina Jezierzycy
siedliska legowe
leg wiazowo-jesionowy
zespol Ficario-Ulmetum minoris
grad srodkowoeuropejski
zespol Galio sylvatici-Carpinetum betuli
opad organiczny
dekompozycja
dynamika rozkladu
wlasciwosci chemiczne
zmiany wlasciwosci
ficario ulmetum−minoris
galio sylvatici−carpinetum betuli
litter fall
chemical composition
jezierzyca valley
Opis:
Disturbances occurring in the riverside forest ecosystems also translate into the ability of litter decomposition. Determination of the litter decomposition rate and the changes in its chemical composition in the course of riparian habitat changes was the aim of the study. The study was conducted in 2011 in Jezierzyca River Valley Landscape Park located partly on a floodplain of Oder river (SW Poland). Two riparian forest habitats (Ficario Ulmetum−minoris) were selected for the study: site L (riparian forest), immediately adjacent to the old river bed and site LZ (drying riparian forest), bordering site L on the edge of the floodplain and adjacent to oak−hornbeam forest (Galio sylvatici−Carpinetum betuli) that constituted site G. The study used the method of litter bags. The research material was collected every quarter except for winter, during 2 years. The decomposition rate of organic matter defined by the loss of organic matter, understood as the difference between the previous and the current state. We analyzed content of total organic carbon, total nitrogen and available phosphorus, potassium and magnesium in the litter fall. As the result, decomposition occurred the most rapidly in the oak−hornbeam forest community and the slowest in the drying riparian forest. Regardless of the type of forest community rate of decomposition of the fresh organic matter is the highest in winter and spring. The highest content of organic carbon and total nitrogen was observed in the oak−hornbeam forest, slightly lower in the riparian forest, while the lowest in the drying riparian forest. Similarly the content of available phosphorus, potassium and magnesium was presented. Along with the progressive decomposition, examined material had increased Corg and N content, but reduced C/N ratio. In all analyzed forest com− munities were found the release of P, K and Mg in the environment, which was the most intense in spring and summer.
Źródło:
Sylwan; 2017, 161, 07; 565-572
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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