Forest soil and vegetation dynamics following a disturbance - recovery from stump harvesting

Lilli Matilda Kaarakka, Heljä-Sisko Marketta Helmisaari, Riitta Hyvönen, Monika Strömgren, Marjo Maarit Palviainen, Tryggve Persson, Bengt A. Olsson

Research output: Conference materialsPoster

Abstract

Soil provides the foundation for plant and tree growth in a forested ecosystem. The use of forest- derived biomass has steadily increased in the Nordic countries during the past decades leading to more intensive forest management practices in the region, such as whole-tree harvesting, both above- and belowground. Stump harvest causes severe soil disturbance, such as mixing and relocation of the organic material and the mineral soil within the soil profile potentially leading to decreases in site productivity. Furthermore, decomposing stumps and roots can be a potential source of nutrients for the next generation of trees. Finally, the climate benefits of stump harvesting are uncertain.
The aim of this study was to assess the effects of physical and chemical load on the longevity of soil changes, their long-term ecosystem recovery and factors affecting it. We studied the effects of stump harvesting on soil carbon and nitrogen mineralization, soil surface disturbance, coarse woody debris and vegetation in different clear-felled Norway spruce (Picea abies) stands. The sampling was performed 8– 13 years after treatments. Site preparation in the form of spot mounding was been carried out in all clear-cut plots, also where the stumps were removed. Logging residues were harvested in all experimental stands and the stands were planted with Norway spruce seedlings following site preparation. The findings of this study indicate that the effects of stump harvesting on soil carbon and nitrogen dynamics, field layer vegetation and coarse woody debris are site-specific but nevertheless existent.
Original languageEnglish
Publication statusPublished - 2018
EventNorth American Forest Soils Conference - International Symposium on Forest Soils 2018 - Quebec, Quebec , Canada
Duration: 10 Jun 201816 Jun 2018
http://www.cef-cfr.ca/index.php?n=Colloque.NAFSC-ISFS2018#callabstract

Conference

ConferenceNorth American Forest Soils Conference - International Symposium on Forest Soils 2018
Abbreviated titleNAFSC-ISFS 2018
CountryCanada
CityQuebec
Period10/06/201816/06/2018
Internet address

Fields of Science

  • 4112 Forestry
  • SOIL DYNAMICS
  • STUMP REMOVAL
  • Norway spruce (Picea abies)
  • BIOMASS C

Cite this

Kaarakka, L. M., Helmisaari, H-S. M., Hyvönen, R., Strömgren, M., Palviainen, M. M., Persson, T., & Olsson, B. A. (2018). Forest soil and vegetation dynamics following a disturbance - recovery from stump harvesting. Poster session presented at North American Forest Soils Conference - International Symposium on Forest Soils 2018, Quebec , Canada.