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Skogaryd – Integration of terrestrial and freshwater greenhouse gas sources and sinks

Poster
Authors Leif Klemedtsson
David Bastviken
Robert G. Björk
Pascal Boeckx
Patrick Crill
Alf Ekblad
Maria Ernfors
Per-Erik Jansson
Anders Lindroth
Azad Nousratpour
Josefine Nylinder
Anna Rutgersson
Tobias Rütting
Mats Räntfors
Sebastian Sobek
Lasse Tarvainen
Frida Thomsen
Lars Tranvik
Göran Wallin
Per Weslien
Gesa Weyhenmeyer
Published in 1st COST meeting ‘Belowground carbon in Europeanforest’, Birmensdorf, Switzerland, 26–28 January 2010.
Publication year 2010
Published at Department of Plant and Environmental Sciences
Language en
Keywords Boreal landscape, Carbon dynamics, Greenhouse gas balance, Modelling, Nitrogen dynamics, Peatlands
Subject categories Biological Sciences

Abstract

Forests play an important role in the global carbon (C) cycle, and management as well as climate can cause major effects on the balance of C between the atmosphere and the plant/soil system. With re-gard to our commitments to the Kyoto and post-Kyoto actions on climate change, we need reliable predictions on how this balance is affected by management and climate. In 2006 the Skogaryd Research Forest was established in the southwest of Sweden (58°23’N, 12°09’E). The overall goal is to quantify net greenhouse gas (GHG) fluxes from drained spruce forest, by determining the individual fluxes and pools of C and nitrogen and elucidating their connection to site fertility, drainage status and abiotic parameters and then use the generated data in GHG models, for model validations and ultimately emissions predictions. During 2006-2009 the research has fo-cused on two sites, mineral and organic, dominated by Norway spruce (Picea abies). Both sites are drained fertile soils but with different land-use history that have affected their physical properties. Measurements includes: net ecosystem exchange of CO2, Shoot photosynthesis and respiration at different locations within the canopy, stem respiration, emissions of N2O and CH4 using manual cham-bers, soil respiration with automatic chambers including a trenching experiment where root-, mycelia-, and heterotrophic respiration are separated, fine root production using minirhizotrons, and mycelia production. The organic site also includes a wood ash experiment. From 2010 the research will be expanded to the whole watershed, from the mire system via streams, riparian zones, forests, to lakes and the subsequent exchange between the atmosphere and surface waters. Different terrestrial and limnic ecosystems will be linked holistically, using site specific tech-niques at different scales, from aircraft (km2) to chambers (m2) to create integrated models that can be used to quantify net GHG flux for management strategies.

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