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dc.contributor.authorNessa, A
dc.contributor.authorBai, SH
dc.contributor.authorWang, D
dc.contributor.authorKarim, Z
dc.contributor.authorOmidvar, N
dc.contributor.authorZhan, J
dc.contributor.authorXu, Z
dc.date.accessioned2021-11-03T01:19:58Z
dc.date.available2021-11-03T01:19:58Z
dc.date.issued2021
dc.identifier.issn1439-0108
dc.identifier.doi10.1007/s11368-021-03077-9
dc.identifier.urihttp://hdl.handle.net/10072/409693
dc.description.abstractPurpose: Nitrogen (N) cycle is one of the key biogeochemical cycles in terrestrial ecosystems. Global climate change and soil management practices have disrupted the soil N cycling processes due to increased water and N limitations. Biochar is a soil amendment and improves soil–plant water and N retentions. However, it is uncertain to what extent biochar pyrolysis temperature would affect soil N transformations under two soil moisture regimes. This study aimed to explore how pyrolysis temperature would affect biochar properties and subsequently soil N transformations through a short-term laboratory incubation study at two moisture levels. Materials and methods: An incubation study was carried out for 5 days. Biochar added to the soil at a rate of 5% (w/w) was produced under six different pyrolysis temperatures (e.g., 500, 600, 650, 700, 750, and 850 °C). We used 15N natural abundance (δ15N) of inorganic N (NH4+-N and NO3−-N) to assess the potential of biochar materials in facilitating forest soil N transformations at two different soil moisture levels of 50% and 65% water holding capacity (WHC). Results and discussion: Pyrolysis temperature significantly increased cumulative nitrification and N mineralization initially, peaked between 600 and 700 °C and decreased thereafter. However, both cumulative nitrification and N mineralization were significantly lower in the biochar-amended soils than those of the control soil, with significantly lower δ15N of NH4+-N and δ15N of NO3−-N. The 65% WHC had higher cumulative nitrification and N mineralization compared with those in 50% WHC. This study highlights that application of biochar would reduce N losses and improve soil N retention particularly for forest soil. Conclusions: The present study highlights the importance of biochar pyrolysis temperatures for their use as soil conditioner to increase soil N retention. An optimum pyrolysis temperature range of 600–700 °C was identified for improving soil nitrification and N mineralization under the laboratory incubation conditions.
dc.description.peerreviewedYes
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.relation.ispartofjournalJournal of Soils and Sediments
dc.subject.fieldofresearchEarth sciences
dc.subject.fieldofresearchSoil sciences
dc.subject.fieldofresearchAgricultural, veterinary and food sciences
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchcode37
dc.subject.fieldofresearchcode4106
dc.subject.fieldofresearchcode30
dc.subject.fieldofresearchcode41
dc.titleSoil nitrification and nitrogen mineralization responded non-linearly to the addition of wood biochar produced under different pyrolysis temperatures
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationNessa, A; Bai, SH; Wang, D; Karim, Z; Omidvar, N; Zhan, J; Xu, Z, Soil nitrification and nitrogen mineralization responded non-linearly to the addition of wood biochar produced under different pyrolysis temperatures, Journal of Soils and Sediments, 2021
dc.date.updated2021-11-03T00:56:37Z
gro.description.notepublicThis publication has been entered in Griffith Research Online as an advanced online version.
gro.hasfulltextNo Full Text
gro.griffith.authorXu, Zhihong
gro.griffith.authorHosseini-Bai, Shahla
gro.griffith.authorOmidvar, Negar


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