Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/3345
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dc.contributor.authorReichstein, Markusen_UK
dc.contributor.authorSubke, Jens-Arneen_UK
dc.contributor.authorAngeli, Andrew Cen_UK
dc.contributor.authorTenhunen, John Den_UK
dc.date.accessioned2012-04-29T18:36:28Z-
dc.date.available2012-04-29T18:36:28Zen_UK
dc.date.issued2005-10en_UK
dc.identifier.urihttp://hdl.handle.net/1893/3345-
dc.description.abstractSeveral studies have shown multiple confounding factors influencing soil respiration in the field, which often hampers a correct separation and interpretation of the different environmental effects on respiration. Here, we present a controlled laboratory experiment on undisturbed organic and mineral soil cores separating the effects of temperature, drying–rewetting and decomposition dynamics on soil respiration. Specifically, we address the following questions: (1) Is the temperature sensitivity of soil respiration (Q10) dependent on soil moisture or soil organic matter age (incubation time) and does it differ for organic and mineral soil as suggested by recent field studies. (2) How much do organic and mineral soil layers contribute to total soil respiration? (3) Is there potential to improve soil flux models of soil introducing a multilayer source model for soil respiration? Eight organic soil and eight mineral soil cores were taken from a Norway spruce (Picea abies) stand in southern Germany, and incubated for 90 days in a climate chamber with a diurnal temperature regime between 7 and 23 1C. Half of the samples were rewetted daily, while the other half were left to dry and rewetted thereafter. Soil respiration was measured with a continuously operating open dynamic soil respiration chamber system. The Q10 was stable at around 2.7, independent of soil horizon and incubation time, decreasing only slightly when the soil dried. We suggest that recent findings of the Q10 dependency on several factors are emergent properties at the ecosystem level, that should be analysed further e.g. with regard to rhizosphere effects. Most of the soil CO2 efflux was released from the organic samples. Initially, it averaged 4.0 lmolm 2 s 1 and declined to 1.8 lmolm 2 s 1 at the end of the experiment. In terms of the third question, we show that models using only one temperature as predictor of soil respiration fail to explain more than 80% of the diurnal variability, are biased with a hysteresis effect, and slightly underestimate the temperature sensitivity of respiration. In contrast, consistently more than 95% of the diurnal variability is explained by a dual-source model, with one CO2 source related to the surface temperature and another CO2 source related to the central temperature, highlighting the role of soil surface processes for ecosystem carbon balancesen_UK
dc.language.isoenen_UK
dc.publisherBlackwell Publishing (now Wiley-Blackwell)en_UK
dc.relationReichstein M, Subke J, Angeli AC & Tenhunen JD (2005) Does the temperature sensitivity of decomposition of soil organic matter depend upon water content, soil horizon, or incubation time?. Global Change Biology, 11 (10), pp. 1754-1767. http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2486.2005.001010.x/abstract; https://doi.org/10.1111/j.1365-2486.2005.001010.xen_UK
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.rights.urihttp://www.rioxx.net/licenses/under-embargo-all-rights-reserveden_UK
dc.subjectdrying–rewettingen_UK
dc.subjectdual-source modelen_UK
dc.subjectincubation experimenten_UK
dc.subjectQ10en_UK
dc.subjectsoil moistureen_UK
dc.subjectsoil respirationen_UK
dc.subjectSoil temperatureen_UK
dc.subjectSoil moistureen_UK
dc.subjectSoil respirationen_UK
dc.subjectBiodegradationen_UK
dc.subjectOrganic wastes as soil amendmentsen_UK
dc.titleDoes the temperature sensitivity of decomposition of soil organic matter depend upon water content, soil horizon, or incubation time?en_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate3000-01-01en_UK
dc.rights.embargoreason[Reichstein et al 2005_GCB.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.identifier.doi10.1111/j.1365-2486.2005.001010.xen_UK
dc.citation.jtitleGlobal Change Biologyen_UK
dc.citation.issn1365-2486en_UK
dc.citation.issn1354-1013en_UK
dc.citation.volume11en_UK
dc.citation.issue10en_UK
dc.citation.spage1754en_UK
dc.citation.epage1767en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusVoR - Version of Recorden_UK
dc.identifier.urlhttp://onlinelibrary.wiley.com/doi/10.1111/j.1365-2486.2005.001010.x/abstracten_UK
dc.author.emailjens-arne.subke@stir.ac.uken_UK
dc.contributor.affiliationUniversity of Tusciaen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationUniversity of Yorken_UK
dc.contributor.affiliationUniversity of Bayreuthen_UK
dc.identifier.wtid833982en_UK
dc.contributor.orcid0000-0001-9244-639Xen_UK
dcterms.dateAccepted2005-10-31en_UK
dc.date.filedepositdate2011-09-13en_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionVoRen_UK
local.rioxx.authorReichstein, Markus|en_UK
local.rioxx.authorSubke, Jens-Arne|0000-0001-9244-639Xen_UK
local.rioxx.authorAngeli, Andrew C|en_UK
local.rioxx.authorTenhunen, John D|en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate3000-01-01en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved||en_UK
local.rioxx.filenameReichstein et al 2005_GCB.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source1354-1013en_UK
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