Current issue: 53(3)

Under compilation: 53(4)

Impact factor 1.683
5-year impact factor 1.950
Silva Fennica 1926-1997
1990-1997
1980-1989
1970-1979
1960-1969
Acta Forestalia Fennica
1953-1968
1933-1952
1913-1932

Articles containing the keyword 'stump removal'.

Category: Research article

article id 53, category Research article
Saana Kataja-aho, Aino Smolander, Hannu Fritze, Sini Norrgård, Jari Haimi. (2012). Responses of soil carbon and nitrogen transformations to stump removal. Silva Fennica vol. 46 no. 2 article id 53. https://doi.org/10.14214/sf.53
We studied in central Finland whether stump harvesting after clear felling of coniferous forest poses further short-term changes in soil carbon and nitrogen dynamics when compared to the traditional site preparation method, mounding. Exposed mineral soil patches in Norway spruce (Picea abies) dominated clear-cut stands were sampled 1–5 years after the treatments. The extent of the exposed mineral soil surface was significantly larger at the stump removal sites when compared to the mounding sites. No differences were found in soil pH, organic matter content or total concentration of soil C between the treatments or treatment years. Total concentration of soil N was consistently higher and C:N ratio lower in the stump removal plots than in the mounded plots. Further, both net N mineralisation and nitrification were clearly increased in the stump removal plots one year after the treatments. Soil microbial activity (CO2 production) was higher in the stump removal plots but similar difference was not found in sieved soil samples incubated in the laboratory. Fluxes of other important greenhouse gases (CH4 and N2O) did not seem to be affected by stump removal. The differences between the stump removal and mounding procedures were most obviously attributed to more substantial soil disturbance by stump pulling and/or differences in the microbial communities and quality of soil organic matter in the differently treated soil.
  • Kataja-aho, University of Jyväskylä, Dept. of Biological and Environmental Science, Jyväskylä, Finland ORCID ID:E-mail: saana.m.kataja-aho@jyu.fi (email)
  • Smolander, Finnish Forest Research Institute, Vantaa, Finland ORCID ID:E-mail:
  • Fritze, Finnish Forest Research Institute, Vantaa, Finland ORCID ID:E-mail:
  • Norrgård, University of Jyväskylä, Dept. of Biological and Environmental Science, Jyväskylä, Finland ORCID ID:E-mail:
  • Haimi, University of Jyväskylä, Dept. of Biological and Environmental Science, Jyväskylä, Finland ORCID ID:E-mail:
article id 66, category Research article
Monika Strömgren, Kristina Mjöfors, Björn Holmström, Achim Grelle. (2012). Soil CO2 flux during the first years after stump harvesting in two Swedish forests. Silva Fennica vol. 46 no. 1 article id 66. https://doi.org/10.14214/sf.66
One way of increasing the supply of renewable energy, thereby decreasing the use of fossil fuels, is to extract the stumps that remain after final stem harvesting. However, little is known about the environmental consequences of stump harvesting, and how ecosystem services, such as carbon sequestration, are affected by the practice. In the present paper, the effects on the soil carbon pool during the first months and years after stump harvesting in former Norway spruce stands are presented. The study was performed at two sites in mid- and southern Sweden. At both sites, the soil CO2 flux was measured on several occasions with a portable respiration system, to compare plots on which stump harvesting had occurred, with reference plots. At one of the sites, CO2 exchange was also followed continuously by means of eddy-covariance measurements before and after stump harvesting. Since there was no vegetation at the beginning of the study, almost all emitted CO2 could be assumed to come from heterotrophic sources, and the soil CO2 flux was measured. This study shows that the effect of stump harvesting on CO2 flux or soil decomposition processes is small or absent compared to site preparation such as mounding in a short-term perspective of months and years. The long-term consequences of stump harvesting are, however, still uncertain.
  • Strömgren, Swedish University of Agricultural Sciences, Department of Soil and Environment, Uppsala, Sweden ORCID ID:E-mail: monika.stromgren@slu.se (email)
  • Mjöfors, Swedish University of Agricultural Sciences, Department of Soil and Environment, Uppsala, Sweden ORCID ID:E-mail:
  • Holmström, Swedish University of Agricultural Sciences, Department of Soil and Environment, Uppsala, Sweden ORCID ID:E-mail:
  • Grelle, Swedish University of Agricultural Sciences, Department of Ecology, Uppsala, Sweden ORCID ID:E-mail:

Register
Click this link to register for Silva Fennica submission and tracking system.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content
Your selected articles

Committee on Publication Ethics A Trusted Community-Governed Archive