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Addition of softwood biochar did not reduce N2O emissions or N leaching from peat soil in the short term

dc.contributor.authorSaarnio, Sanna
dc.contributor.authorKekkonen, Hanna
dc.contributor.authorLång, Kristiina
dc.contributor.departmentid4100310610
dc.contributor.departmentid4100310610
dc.contributor.departmentid4100310610
dc.contributor.orcidhttps://orcid.org/0000-0002-9041-6899
dc.contributor.orcidhttps://orcid.org/0000-0001-9080-7956
dc.contributor.organizationLuonnonvarakeskus
dc.date.accessioned2024-07-10T06:39:44Z
dc.date.accessioned2025-05-27T20:04:32Z
dc.date.available2024-07-10T06:39:44Z
dc.date.issued2024
dc.description.abstractDrained agricultural peat soils pollute both the atmosphere and watercourses. Biochar has been observed to decrease greenhouse gas (GHG) emissions and nutrient loading in mineral soils. We studied effects of three biochar types with two application rates (10 and 30 Mg ha−1) on GHG fluxes as well as N and P leaching on peat soil. Peat monoliths were drilled from a long-term cultivated field and were watered either slightly (five dry periods) or heavily (four rainfall periods) during an 11-month laboratory experiment with intact peat columns. The incubation of bare peat profiles enhanced peat decomposition leading to high CO2 (up to 1300 mg CO2 m−2 h−1) and N2O emissions (even 10,000–50,000 μg N2O m−2 h−1) and NO3−-N leaching (even 300–700 mg L−1) in all treatments. In the beginning of the experiment, the lower application rate of pine bark biochars increased N2O emission compared to control, but otherwise none of the biochars or their application rates significantly affected gas fluxes or nutrient leaching. These results indicate that moderate softwood biochar application does not help to mitigate the environmental problems of agricultural peat soils. Higher application rate of biochar pyrolyzed at high temperature is recommended for further studies with peat soils.
dc.description.vuosik2024
dc.format.bitstreamtrue
dc.format.pagerange11 p.
dc.identifier.citationHow to cite: S. Saarnio, H. Kekkonen, K. Lång, Addition of softwood biochar did not reduce N2O emissions or N leaching from peat soil in the short term, Science of The Total Environment, Volume 944, 2024, 173906, ISSN 0048-9697,https://doi.org/10.1016/j.scitotenv.2024.173906.
dc.identifier.olddbid497662
dc.identifier.oldhandle10024/555092
dc.identifier.urihttps://jukuri.luke.fi/handle/11111/9383
dc.identifier.urlhttp://dx.doi.org/10.1016/j.scitotenv.2024.173906
dc.identifier.urnURN:NBN:fi-fe2024070960932
dc.language.isoen
dc.okm.avoinsaatavuuskytkin1 = Avoimesti saatavilla
dc.okm.corporatecopublicationei
dc.okm.discipline1172
dc.okm.internationalcopublicationei
dc.okm.julkaisukanavaoa2 = Osittain avoimessa julkaisukanavassa ilmestynyt julkaisu
dc.okm.selfarchivedon
dc.publisherElsevier
dc.relation.articlenumber173906
dc.relation.doi10.1016/j.scitotenv.2024.173906
dc.relation.ispartofseriesScience of the total environment
dc.relation.issn0048-9697
dc.relation.issn1879-1026
dc.relation.volume944
dc.rightsCC BY 4.0
dc.source.identifierhttps://jukuri.luke.fi/handle/10024/555092
dc.subjectpeat
dc.subjectbiochar
dc.subjectgreenhouse gases
dc.subjectnutrient leaching
dc.teh41007-00201701
dc.titleAddition of softwood biochar did not reduce N2O emissions or N leaching from peat soil in the short term
dc.typepublication
dc.type.okmfi=A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä|sv=A1 Originalartikel i en vetenskaplig tidskrift|en=A1 Journal article (refereed), original research|
dc.type.versionfi=Publisher's version|sv=Publisher's version|en=Publisher's version|

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