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dc.contributor.authorThi, Thu Nhan Nguyen
dc.contributor.authorXu, Cheng-Yuan
dc.contributor.authorTahmasbian, Iman
dc.contributor.authorChe, Rongxiao
dc.contributor.authorXu, Zhihong
dc.contributor.authorZhou, Xuhui
dc.contributor.authorWallace, Helen M
dc.contributor.authorBai, Shahla Hosseini
dc.date.accessioned2018-03-22T23:33:59Z
dc.date.available2018-03-22T23:33:59Z
dc.date.issued2017
dc.identifier.issn0016-7061
dc.identifier.doi10.1016/j.geoderma.2016.11.004
dc.identifier.urihttp://hdl.handle.net/10072/337848
dc.description.abstractThe interaction between biochar and soil changes nitrogen (N) dynamics in different ecosystems. Although multiple studies have reported influences of biochar on soil inorganic N (SIN) including ammonium (NH4+-N) and nitrate (NO3−-N), the influences reported are contradictory. We undertook a meta-analysis to investigate how biochar properties and the interaction among biochar, soil and fertilisation affect SIN. This quantitative analysis used 56 studies with 1080 experimental cases from manuscripts published between 2010 and 2015. Overall, we found that biochar reduced SIN regardless of experimental conditions (approximately − 11 ± 2% of NH4+-N and − 10 ± 1.6% of NO3−-N); however, 95% of cases were observed within one year after biochar application. SIN was best explained by residence time of biochar in soil, pyrolysis temperature, application rate, fertiliser type, and soil pH. The effects of biochar were complex due to the interaction of biochar with environmental factors. Most biochar trials used wood as a feedstock, but woody biochar did not decrease SIN as much as other plant-derived biochars. When biochar was used with NH4-based fertilisers, SIN decreased compared to biochar with no fertiliser. In contrast, adding organic fertiliser with biochar increased SIN compared to biochar alone. SIN was clearly reduced after one month of biochar application, suggesting that biochar should be applied at least one month prior to planting so plants are not affected by decreased N. Our results revealed that the interactions between biochar and environmental factors, pyrolysis temperature of biochar and biochar surface properties are the main driving factors affecting SIN. There were limited long-term studies of > 1 year, thus the long-term effects of biochar on SIN still remain unclear.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom79
dc.relation.ispartofpageto96
dc.relation.ispartofjournalGeoderma
dc.relation.ispartofvolume288
dc.subject.fieldofresearchSoil Chemistry (excl. Carbon Sequestration Science)
dc.subject.fieldofresearchEnvironmental Sciences
dc.subject.fieldofresearchBiological Sciences
dc.subject.fieldofresearchAgricultural and Veterinary Sciences
dc.subject.fieldofresearchcode050304
dc.subject.fieldofresearchcode05
dc.subject.fieldofresearchcode06
dc.subject.fieldofresearchcode07
dc.titleEffects of biochar on soil available inorganic nitrogen: A review and meta-analysis
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionAccepted Manuscript (AM)
gro.facultyGriffith Sciences, Environmental Futures Research Institute
gro.rights.copyright© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorXu, Zhihong
gro.griffith.authorHosseini-Bai, Shahla
gro.griffith.authorXu, Chengyuan
gro.griffith.authorTahmasbian, Iman
gro.griffith.authorChe, Rongxiao
gro.griffith.authorNguyen, Nhan
gro.griffith.authorWallace, Helen M.


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