Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSubke, Jens-Arneen_UK
dc.contributor.authorTenhunen, John Den_UK
dc.description.abstractWe applied the eddy covariance technique below the canopy of a mature Norway spruce (Picea abies) forest in SE Germany, with a dense ground cover of the grasses Calamagrostis villosa and Deschampsia flexuosa. Measurements were carried out during three field campaigns between May and November 1999. Data quality analysis led to the exclusion of around 61% of flux measurements. Chamber measurements of soil CO2 efflux at the same site showed that the micro-meteorological measurements systematically under-estimate the night-time CO2 efflux on average by about 41%. By correcting the eddy covariance flux on the basis of chamber measurements, flux measurements over a larger area could be obtained, and so it was possible to calculate the daytime gross assimilation flux for the ground vegetation averaged for each of four 4-week periods. Separation of fluxes according to grass species (by wind sectors) showed no detectable difference in CO2 flux, but scarcity of data following quality tests meant that comparisons were limited to selected periods only. Light response curves of the corrected flux values indicate different saturation values for the gross assimilation rates in each period, which reflect the phenological development of the grasses, as well as differences in environmental conditions. On the basis of mean day-time assimilation by ground vegetation, the contribution to the total gross assimilation of the stand was estimated as between 3 and 12% at different times of the year. About 30% of the carbon emitted annually as CO2 from the soil is estimated to be assimilated by the ground vegetation (ca. 170 g C m-2 year-1).en_UK
dc.publisherElsevier Massonen_UK
dc.relationSubke J & Tenhunen JD (2004) Direct measurements of CO2 flux below a spruce forest canopy. Agricultural and Forest Meteorology, 126 (40940), pp. 157-168.
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.subjectEddy covarianceen_UK
dc.subjectGround vegetationen_UK
dc.subjectUnderstorey gas exchangeen_UK
dc.subjectPicea abies foresten_UK
dc.subjectSoil respirationen_UK
dc.subjectSoil respirationen_UK
dc.subjectForest ecologyen_UK
dc.subjectSoil ecologyen_UK
dc.subjectSoil chemistryen_UK
dc.titleDirect measurements of CO2 flux below a spruce forest canopyen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Subke Tenhunen 2004_AgrForMet.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.citation.jtitleAgricultural and Forest Meteorologyen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationUniversity of Bayreuthen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorSubke, Jens-Arne|0000-0001-9244-639Xen_UK
local.rioxx.authorTenhunen, John D|en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameSubke Tenhunen 2004_AgrForMet.pdfen_UK
Appears in Collections:Biological and Environmental Sciences Journal Articles

Files in This Item:
File Description SizeFormat 
Subke Tenhunen 2004_AgrForMet.pdfFulltext - Published Version221.22 kBAdobe PDFUnder Embargo until 2999-12-21    Request a copy

This item is protected by original copyright

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

The metadata of the records in the Repository are available under the CC0 public domain dedication: No Rights Reserved

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.