Spatial and temporal dynamics of the soil charcoal pool in relation to fire history in a boreal forest landscape
| Autor: | Isabella Kasin, Johan Asplund, Mikael Ohlson, Vanessa Marie Ellingsen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
010506 paleontology Global and Planetary Change 010504 meteorology & atmospheric sciences Ecology Taiga Forestry 01 natural sciences Carbon cycle chemistry visual_art Soil water visual_art.visual_art_medium Environmental science Organic matter Cycling Charcoal Fire history 0105 earth and related environmental sciences |
| Zdroj: | Canadian Journal of Forest Research. 47:28-35 |
| ISSN: | 1208-6037 0045-5067 |
| DOI: | 10.1139/cjfr-2016-0233 |
| Popis: | Charcoal pools in boreal forest soils constitute considerable amounts of slow cycling organic matter that is important in the global carbon cycle. However, these pools are characterized by spatiotemporal variations that are not well understood. Here, we have analyzed the charcoal pool in 100 soil samples to determine charcoal stock species origin and how the size and age of this pool varies across different spatial scales in a Norwegian boreal forest landscape including forests that differ in terms of tree-species composition, tree density, and recent fire histories. The size of the charcoal pool was site-specific and highly variable, ranging from 0 to 2108 g·m–2. Geostatistical analyses showed that the charcoal pool was only weakly spatially structured at fine spatial scales (metres) and broader between-site scales (100s of metres). Unexpectedly, there was no significant relationship between the amount of charcoal and contemporary forest composition and density, although there was proportionally more charcoal from broadleaved trees in today’s Scots pine forests than in the Norway spruce forests. When relating this information to the fire history, the results indicate that charcoal is lost at a millennial time scale. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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