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Contribution of charcoal to short-term nutrient dynamics after surface fire in the humus layer of a dwarf bamboo-dominated forest
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
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2012 (English)In: Biology and Fertility of Soils, ISSN 0178-2762, E-ISSN 1432-0789, Vol. 48, no 5, 569-577 p.Article in journal (Refereed) Published
Abstract [en]

Ecological function of charcoal has been mainly investigated by adding charcoal to soil, which is not fully adequate to understand in situ the role in fire-prone forest ecosystem. To determine in situ effects of charcoal on ecosystem functions, such as nutrient availability, we conducted an experimental burning in a Japanese white birch forest with dense coverage of dwarf bamboo in the understory with or without removal of charcoal. Ammonium-N in the remaining humus layer increased immediately after the burning, but decreased to the level of unburnt plots within 1 month of the burning. Removal of charcoal had no significant effect on the NH4 (+)-N dynamics. Although burning did not affect NO3 (-)-N dynamics during the sampling period, charcoal removal led to a slight increase in NO3 (-)-N. The available P increased immediately after the burning, but then fell at 1 month after burning. Charcoal inhibited the available P depletion and prolonged the high availability of P. Greater availability of P might be due to the adsorption of phosphate in charcoal pores. Exchangeable Ca and Mg increased gradually; charcoal appeared to extend the period of higher concentration of exchangeable Ca and Mg. Charcoal deriving from fire is a key factor in influencing available nutrient in the humus layer of post-fire forests.

Place, publisher, year, edition, pages
2012. Vol. 48, no 5, 569-577 p.
Keyword [en]
Surface fire, Charcoal, P availability, Cool-temperate forest, Field manipulation
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URN: urn:nbn:se:umu:diva-57344DOI: 10.1007/s00374-011-0657-yISI: 000305518800008OAI: diva2:541532
Available from: 2012-07-19 Created: 2012-07-16 Last updated: 2012-07-19Bibliographically approved

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Makoto, Kobayashi
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Department of Ecology and Environmental Sciences
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