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 |
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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: | 1140A Master of Science in Forestry, 300.0hp |
Supervising 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 |
Subject. Use of subject categories until 2023-04-30.: | ?? 5045 ?? Forestry - General aspects |
Language: | English |
Deposited On: | 05 Oct 2017 10:06 |
Metadata Last Modified: | 05 Oct 2017 10:06 |
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