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Ventorp, David, 2007. A high resolution analysis of macroscopic charcoal deposited in peat. SLU, Southern Swedish Forest Research Centre, Alnarp. Alnarp: SLU, Southern Swedish Forest Research Centre

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Abstract

The amount of macroscopic charcoal in the top 25 cm of three cores from a peat land in Hornsö Ecopark, south-eastern Sweden, was compared to the dendrochronology inferred fire history of the site. Because of the occurrence of a recent fire ex-situ (1999) and one fire ¬in-situ inferred by three fire scared Scots pines, Pinus sylvestris, adjacent (5-10 m) to the peat cores, the site provided an excellent opportunity to compare the abundance of charcoal deposited in a peat land after fires in-situ and ex-situ.
The objectives of the study were threefold: 1) to investigate the relationship between numbers of charcoal fragments (#/cm3) and measured fragment area (mm2/cm3); 2) to test if the smaller size classes could be excluded without changing the signal from the charcoal profile significantly; and 3) to compare the abundance of charcoal deposited between a fire in-situ and ex-situ.
The number of charcoal fragments and the measured charcoal area exhibited a highly significant correlation (P < 0.001 in all three peat cores). When comparing the total number of charcoal fragments > 0.28 mm with those > 0.50 mm in diameter the same charcoal peak pattern emerged. The two size classes also showed a highly significant correlation (P < 0.001 in two and P < 0.05 in one of the cores). Even if ambiguity arose concerning which charcoal peak that should represent the fire of 1908, the fire of 1999 did not produce a clear peak in the charcoal profile.
It was concluded that the parameter "number of charcoal fragments" is preferred over the measured charcoal area in most cases. Even if the > 0.28 and > 0.50 mm size classes exhibited the same charcoal peak profiles one should be cautious to exclude the 0.28-0.50 mm class. The study suggests that fires in-situ depose more charcoal in the peat stratigraphy than fires ex-situ.

Main title:A high resolution analysis of macroscopic charcoal deposited in peat
Authors:Ventorp, David
Supervisor:Lindbladh, Matts
Examiner:UNSPECIFIED
Series:Final thesis / SLU, 5045
Volume/Sequential designation:106
Year of Publication:2007
Level and depth descriptor:Other
Student's programme affiliation:MSc Forestry
Department:(S) > Southern Swedish Forest Research Centre
Keywords:macrocharcoal, sieving, dendrochronology, peat, forest firest, in-situ, ex-situ
URN:NBN:urn:nbn:se:slu:epsilon-s-7544
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-7544
Subjects:SLU > (S) > Southern Swedish Forest Research Centre
Forestry - General aspects
Language:English
Deposited On:05 Oct 2017 10:06
Metadata Last Modified:05 Oct 2017 10:06

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