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dc.contributor.authorPalviainen, Marjo
dc.contributor.authorBerninger, Frank
dc.contributor.authorBruckman, Viktor J
dc.contributor.authorKöster, Kajar
dc.contributor.authorRibeiro, Moreira de Assumpção Christine
dc.contributor.authorAaltonen, Heidi
dc.contributor.authorMakita, Naoki
dc.contributor.authorMishra, Anup
dc.contributor.authorKulmala, Liisa
dc.contributor.authorAdamczyk, Bartosz
dc.contributor.authorZhou, Xuan
dc.contributor.authorHeinonsalo, Jussi
dc.contributor.authorKöster, Egle
dc.contributor.authorPumpanen, Jukka
dc.date.accessioned2018-05-15T08:34:48Z
dc.date.available2018-05-15T08:34:48Z
dc.date.issued2018
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/6597
dc.description.abstractBackground and aims The addition of biochar to soil may offer a chance to mitigate climate change by increasing soil carbon stocks, improving soil fertility and enhancing plant growth. The impacts of biochar in cold environments with limited microbial activity are still poorly known. Methods In order to understand to what extent different types and application rates of biochar affect carbon (C) and nitrogen (N) fluxes in boreal forests, we conducted a field experiment where two different spruce biochars (pyrolysis temperatures 500 °C and 650 °C) were applied at the rate of 0, 5 and 10 t ha−1 to Pinus sylvestris forests in Finland. Results During the second summer after treatment, soil CO2 effluxes showed no clear response to biochar addition. Only in June, the 10 t ha−1 biochar (650 °C) plots had significantly higher CO2 effluxes compared to the control plots. The pyrolysis temperature of biochar did not affect soil CO2 effluxes. Soil pH increased in the plots receiving 10 t ha−1 biochar additions. Biochar treatments had no significant effect on soil microbial biomass and biological N fixation. Nitrogen mineralization rates in the organic layer tended to increase with the amount of biochar, but no statistically significant effect was detected. Conclusions The results suggest that wood biochar amendment rates of 5–10 t ha−1 to boreal forest soil do not cause large or long-term changes in soil CO2 effluxes or reduction in native soil C stocks. Furthermore, the results imply that biochar does not adversely affect soil microbial biomass or key N cycling processes in boreal xeric forests, at least within this time frame. Thus, it seems that biochar is a promising tool to mitigate climate change and sequester additional C in boreal forest soils.
dc.language.isoEN
dc.publisherSpringer Nature
dc.relation.ispartofseriesPLANT AND SOIL
dc.relation.urihttp://dx.doi.org/10.1007/s11104-018-3568-y
dc.rightsCC BY http://creativecommons.org/licenses/by/4.0/
dc.subjectbiochar
dc.subjectbiological nitrogen fixation
dc.subjectmicrobial biomass
dc.subjectnitrogen mineralization
dc.subjectnitrification
dc.subjectsoil respiration
dc.titleEffects of biochar on carbon and nitrogen fluxes in boreal forest soil
dc.description.versionfinal draft
dc.contributor.departmentYmpäristö- ja biotieteiden laitos / Toiminta
uef.solecris.id52283459en
dc.type.publicationTieteelliset aikakauslehtiartikkelit
dc.rights.accessrights© Springer International Publishing AG
dc.relation.doi10.1007/s11104-018-3568-y
dc.description.reviewstatuspeerReviewed
dc.format.pagerange71–85
dc.relation.issn0032-079X
dc.relation.issue1-2
dc.relation.volume425
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessEi


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