Methane consumption in temperate and subarctic forest soils: Rates, vertical zonation, and responses to water and nitrogen

  • Adamsen A
  • King G
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Abstract

Rates of methane consumption were measured in subarctic coniferous and temperate mixed-hardwood forest soils, using static chambers and intact soil cores. Rates at both sites were generally between 1 and 3 mg of CH(4) m day and decreased with increasing soil water contents above 20%. Addition of ammonium (1 mumol g of soil) strongly inhibited methane oxidation in the subarctic soils; a lesser inhibition was observed for temperate forest samples. The response to nitrogen additions occurred within a few hours and was probably due to physiological changes in the active methane-consuming populations. Methane consumption in soils from both sites was stratified vertically, with a pronounced subsurface maximum. This maximum was coincident with low levels of both nitrate and ammonium in the mixed-hardwood forest soil.

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  • PMID: 16348872
  • SGR: 0027341522
  • ISBN: 0099-2240
  • SCOPUS: 2-s2.0-0027341522
  • ISSN: 00992240
  • PUI: 23058937

Authors

  • A. P.S. Adamsen

  • G. M. King

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