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Interactions between vegetation, nutrients and moisture in soils in the Pangnirtung Pass Area, Baffin Island, Canada

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  • Gabriele Broll
  • Charles Tarnocai
  • Gerald Mueller

Abstract

Dry and moist Cryosols were compared on Baffin Island in the Canadian High Arctic considering vegetation, nutrient status and soil organic matter. Carbon and nitrogen contents and the C/N ratio were higher on the moist soils. Almost no differences were found, however, in the plant‐available phosphorus and potassium. Cryoturbation plays an important role in nutrient cycling in moist soils since it not only translocates organic materials downwards, but also moves weathered mineral materials upwards and laterally. It is predicted that, in permafrost areas in Canada, climate warming will affect soil organic matter and the nutrient status of these moist soils, whereas the non‐cryoturbated dry soils will be less affected. Copyright © 1999 John Wiley & Sons, Ltd. Des Cryosols secs et humides ont été comparés sur l'île de Baffin et dans le haut Arctique canadien en considérant la végétation, les substances nutritives et la matrière organique qu'ils contiennent. Les contenus en carbone et en azote et le rapport C/N sont plus élevés dans les sols humides. Presqu'aucune différence n'a été trouvée toutefois en ce qui concerne le phosphore et le potassium disponibles pour les plantes. La cryoturbation joue un rôle important dans la distribution des substances nutritives dans les sols humides car elle ne déplace pas seulement le matériel organique vers le bas mais elle déplace aussi le matériel minéral altéré vers le haut et latéralement. Il est prédit en conséquence que dans les régions où existe un pergélisol au Canada. le réchauffement climatique affectera la matière organique et le statut des substances nutritives des sols humides tandis que les sols secs non cryoturbés seront moins affectés. Copyright © 1999 John Wiley & Sons, Ltd.

Suggested Citation

  • Gabriele Broll & Charles Tarnocai & Gerald Mueller, 1999. "Interactions between vegetation, nutrients and moisture in soils in the Pangnirtung Pass Area, Baffin Island, Canada," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 10(3), pages 265-277, July.
  • Handle: RePEc:wly:perpro:v:10:y:1999:i:3:p:265-277
    DOI: 10.1002/(SICI)1099-1530(199907/09)10:33.0.CO;2-K
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