Sammanfattning

Mechanical site preparation is assumed to reduce soil C stocks by increasing the rate at which the displaced organic material decomposes, but the evidence is equivocal. We measured rates of C loss of forest-floor material in mesh bags either placed on the surface or buried in the mineral soil at four sites in different regional climates in British Columbia. During the 3-year incubation, buried forest-floor material lost between 5% and 15% more C mass than material on the surface, with the greatest difference occurring at the site with the lowest annual precipitation. Studies of the long-term fate of buried and surface humus are needed to understand the net effects of site preparation on soil C stocks.

Nyckelord

humus; decomposition; soil; carbon; site preparation

Publicerad i

Canadian Journal of Forest Research
2017, Volym: 47, nummer: 8, sidor: 1140-1144
Utgivare: CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS

SLU författare

• Wu, Shuyao

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    
  • University of British Columbia

• Nilsson Hegethorn, Marie-Charlotte

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Skogsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1139/cjfr-2016-0533

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/92536