A high resolution analysis of macroscopic charcoal deposited in peat
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...
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| Formato: | L3 |
| Lenguaje: | Inglés |
| Publicado: |
SLU/Southern Swedish Forest Research Centre
2007
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| Materias: |
| _version_ | 1855571871544639488 |
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| author | Ventorp, David |
| author_browse | Ventorp, David |
| author_facet | Ventorp, David |
| author_sort | Ventorp, David |
| collection | Epsilon Archive for Student Projects |
| description | 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. |
| format | L3 |
| id | RepoSLU11428 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés |
| publishDate | 2007 |
| publishDateSort | 2007 |
| publisher | SLU/Southern Swedish Forest Research Centre |
| publisherStr | SLU/Southern Swedish Forest Research Centre |
| record_format | eprints |
| spelling | RepoSLU114282017-10-05T10:06:29Z A high resolution analysis of macroscopic charcoal deposited in peat Ventorp, David macrocharcoal sieving dendrochronology peat forest firest in-situ ex-situ 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. SLU/Southern Swedish Forest Research Centre 2007 L3 eng https://stud.epsilon.slu.se/11428/ |
| spellingShingle | macrocharcoal sieving dendrochronology peat forest firest in-situ ex-situ Ventorp, David A high resolution analysis of macroscopic charcoal deposited in peat |
| title | A high resolution analysis of macroscopic charcoal deposited in peat |
| title_full | A high resolution analysis of macroscopic charcoal deposited in peat |
| title_fullStr | A high resolution analysis of macroscopic charcoal deposited in peat |
| title_full_unstemmed | A high resolution analysis of macroscopic charcoal deposited in peat |
| title_short | A high resolution analysis of macroscopic charcoal deposited in peat |
| title_sort | high resolution analysis of macroscopic charcoal deposited in peat |
| topic | macrocharcoal sieving dendrochronology peat forest firest in-situ ex-situ |