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2021-01-21Zeitschriftenartikel DOI: 10.1111/sum.12699
A model ensemble approach to determine the humus building efficiency of organic amendments in incubation experiments
dc.contributor.authorGasser, Anton A.
dc.contributor.authorDiel, Julius
dc.contributor.authorNielsen, Kerstin
dc.contributor.authorMewes, Paul
dc.contributor.authorEngels, Christof
dc.contributor.authorFranko, Uwe
dc.contributor.authorMewes, Paul
dc.date.accessioned2022-04-14T09:13:22Z
dc.date.available2022-04-14T09:13:22Z
dc.date.issued2021-01-21none
dc.date.updated2021-06-14T16:53:05Z
dc.identifier.urihttp://edoc.hu-berlin.de/18452/25139
dc.description.abstractOrganic amendments are important to sustain soil organic matter (SOM) and soil functions in agricultural soils. Information about the contribution of organic amendments to SOM can be derived from incubation experiments. In this study, data from 72 incubated organic amendments including plant residues, digestates and manure were analysed. The incubation data was compiled from three experimental setups with varying incubation times, soils and incubation temperatures, in which CO2 release was measured continuously. The analysis of the incubation data was performed with an approach relying on conceptual parts of C-TOOL, CCB, Century, ICBM, RothC and Yasso which are all well-approved first-order carbon models that differ in structure and abstraction level. All models are an approximation of reality, whereby each model differs in understanding of the processes involved in soil carbon dynamics. To accumulate the advantages from each model a model ensemble was performed for each substrate. With the ability of each carbon model to compute the distribution of carbon into specific SOM pools a new approach for evaluating organic amendments in terms of humus building efficiency is presented that, depends on the weighted model fit of each ensemble member. Depending on the organic substrate added to the soil, the time course of CO2 release in the incubation studies was predicted with different accuracy by the individual model concepts. Averaging the output of the individual models leads to more robust prediction of SOM dynamics. The EHUM value is easy to interpret and the results are in accordance with the literature.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectcarbon incubationeng
dc.subjecthumus efficiencyeng
dc.subjectmodel ensembleeng
dc.subjectsoil carbon modelseng
dc.subject.ddc630 Landwirtschaft und verwandte Bereichenone
dc.subject.ddc640 Hauswirtschaft und Familienone
dc.titleA model ensemble approach to determine the humus building efficiency of organic amendments in incubation experimentsnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/25139-5
dc.identifier.doi10.1111/sum.12699none
dc.identifier.doihttp://dx.doi.org/10.18452/24476
dc.type.versionpublishedVersionnone
local.edoc.container-titleSoil Use and Managementnone
local.edoc.pages12none
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionLebenswissenschaftliche Fakultätnone
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameWiley-Blackwellnone
local.edoc.container-publisher-placeOxford [u.a.]none
local.edoc.container-volume38none
local.edoc.container-issue1none
local.edoc.container-year2022none
local.edoc.container-firstpage179none
local.edoc.container-lastpage190none
dc.description.versionPeer Reviewednone
dc.identifier.eissn1475-2743

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