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Skład biomasy - Firmy Leśne
Firmy Leśne
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Skład biomasy

5.01.2011
Ile biomasy znajduje się w wywożonej z lasu dłużycy, a ile zostaje w gałęziach, igliwiu i karpie pozostającej w lesie?

Oto wyniki badań.


Naukowcy z Wydziału Leśnego w Poznaniu objeli badaniami trzy powierzchnie doświadczalne, na każdej wybierając 15 drzw próbnych. Siedlisko w którym prowadzono badania to bór Świerzy o glebie bielicowej właściwej, bonitacja II, zadrzewienie 0,8, zwarcie umiarkowane.

Naukowcy wycieli drzewa i zbadali, ile biomasy zawiera samo drewno w strzale, ile jest jej w gałęziach poniżej 7 cm średnicy a ile w igłach i korzeniach. Co wyszło?

Po pierwsze średnio w drzewostanie było 372 tony biomasy na hektar. To w stanie świeżym. W stanie suchym 157 ton na ha.

W stanie suchym drzewo dzieli się na:
  • strzałę -  66 proc.
  • karpę ? 15 proc.
  • gałęzie - 10,3 proc.
  • korę ? 7 proc.
  • igliwie ? 1,7 proc.

Czyli wywożąc dłużyce czy kłody wywozimy z lasu ok. 66 proc. składników zawartych ściętym drzewie. Jeśli do tego wyrobimy gałęziówkę, zabierzemy dodatkowo prawie 10 proc.

firmylesne.pl
Źródło: Przegląd Leśniczy 11/2010
 
 
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