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Patrik Vestin

Forskningsingenjör

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Short-term effects of thinning, clear-cutting and stump harvesting on methane exchange in a boreal forest

Författare

  • Elin Sundqvist
  • Patrik Vestin
  • Patrick Crill
  • Tryggve Persson
  • Anders Lindroth

Summary, in English

Forest management practices can alter soil conditions,

affecting the consumption and production processes

that control soil methane (CH4) exchange. We studied the

short-term effects of thinning, clear-cutting and stump harvesting

on the CH4 exchange between soil and atmosphere at

a boreal forest site in central Sweden, using an undisturbed

plot as the control. Chambers in combination with a highprecision

laser gas analyser were used for continuous measurements.

Both the undisturbed plot and the thinned plot

were net sinks of CH4, whereas the clear-cut plot and the

stump harvested plot were net CH4 sources. The CH4 uptake

at the thinned plot was reduced in comparison to the undisturbed

plot. The shift from sink to source at the clear-cut and

stump harvested plots was probably due to a rise in the water

table and an increase in soil moisture, leading to lower

gas diffusivity and more reduced conditions, which favour

CH4 production by archea. Reduced evapotranspiration after

harvesting leads to wetter soils, decreased CH4 consumption

and increased CH4 production, and should be accounted for

in the CH4 budget of managed forests.

Avdelning/ar

  • Institutionen för naturgeografi och ekosystemvetenskap
  • eSSENCE: The e-Science Collaboration
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publiceringsår

2014

Språk

Engelska

Sidor

6095-6105

Publikation/Tidskrift/Serie

Biogeosciences

Volym

11

Issue

21

Dokumenttyp

Artikel i tidskrift

Förlag

Copernicus GmbH

Ämne

  • Physical Geography

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 1726-4189