The current state of CO 2 flux chamber studies in the Arctic tundra: a review ...

• Main Authors: Anna-Maria Virkkala, Virtanen, Tarmo, Lehtonen, Aleksi, Rinne, Janne, Luoto, Miska
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Figshare 2017
• Subjects: Geography; 120599 Urban and Regional Planning not elsewhere classified; FOS: Social and economic geography; Arctic; Climate change; Fennoscandia; Tundra; Alaska
• Online Access: https://dx.doi.org/10.25384/sage.c.4071776; https://figshare.com/collections/The_current_state_of_CO_sub_2_sub_flux_chamber_studies_in_the_Arctic__tundra_a_review/4071776

The Arctic tundra plays an important role in the carbon cycle as it stores 50% of global soil organic carbon reservoirs. The processes (fluxes) regulating these stocks are predicted to change due to direct and indirect effects of climate change. Understanding the current and future carbon balance calls for a summary of the level of knowledge regarding chamber-derived carbon dioxide (CO 2 ) flux studies. Here, we describe progress from recently (2000–2016) published studies of growing-season CO 2 flux chamber measurements, namely GPP (gross primary production), ER (ecosystem respiration), and NEE (net ecosystem exchange), in the tundra region. We review the study areas and designs along with the explanatory environmental drivers used. Most of the studies were conducted in Alaska and Fennoscandia, and we stress the need for measuring fluxes in other tundra regions, particularly in more extreme climatic, productivity, and soil conditions. Soil respiration and other greenhouse gas measurements were seldom ...