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Forest floor CO2 flux measurements with a dark-light chamber

Lankreijer, Harry and Lindroth, Anders and Strömgren, Monika and Kulmala, L and Pumpanen, Jukka (2009). Forest floor CO2 flux measurements with a dark-light chamber. Biogeosciences. 6, 9301–9329
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Abstract

An automatic closed chamber system for measuring net carbon flux from the forest floor was equipped with both a transparent and an opaque cover. The system was operated in such way that a measurement session with transparent chamber was followed by a session with dark chamber. This made it possible to estimate besides total daytime respiration and nighttime respiration also the gross assimilation of the vegetation enclosed in the chamber. The chamber was used at two locations, Hyytiäla in Finland and Norunda in Sweden. Results were compared to estimation of gross assimilation by extrapolation of nighttime respiration and the difference between daytime and nighttime respiration was analyzed. Estimated gross photosynthesis from the darkening sessions by the chamber resulted in a higher gross photosynthesis then obtained by extrapolation from nighttime respiration for Norunda, but not for Hyytälä. Comparison of obtained gross photosynthesis rates indicated that the forest floor vegetation contributed up to 30% of maximum net ecosystem uptake.

Authors/Creators:Lankreijer, Harry and Lindroth, Anders and Strömgren, Monika and Kulmala, L and Pumpanen, Jukka
Title:Forest floor CO2 flux measurements with a dark-light chamber
Series/Journal:Biogeosciences (1726-4189)
Year of publishing :2009
Volume:6
Page range:9301–9329
Number of Pages:28
Publisher:Copernicus Publications
ISSN:1726-4189
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Geosciences, Multidisciplinary
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Agrovoc terms:Forests, Photosynthesis
Keywords:net carbon flux, daytime respiration, nighttime respiration, gross assimilation, photosynthesis, forests
URN:NBN:urn:nbn:se:slu:epsilon-e-1726
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-1726
ID Code:10921
Department:(S)
Deposited By: SLUpub Connector
Deposited On:17 Dec 2013 06:38
Metadata Last Modified:07 Mar 2015 09:54

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