Wolf, Inken

[["dc.bibliographiccitation.firstpage","1862"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Soil Science Society of America Journal"],["dc.bibliographiccitation.lastpage","1868"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Wolf, I."],["dc.contributor.author","Brumme, Rainer"],["dc.date.accessioned","2018-11-07T10:35:17Z"],["dc.date.available","2018-11-07T10:35:17Z"],["dc.date.issued","2003"],["dc.description.abstract","A (15)N tracer study was conducted to determine N(2) and N(2)O fluxes and the processes responsible for the formation of N(2)O in two beech (Fagus silvatica L.) forest soils: an acid mineral soil (AM) (pH=3.8) and the overlying acid forest floor (AFF) (pH=3.8) from the Soiling and a less acid mineral soil (LAM) (pH=5.2) from the Gottinger Wald. Ammonium and nitrate of undisturbed soil cores were labeled by injecting (15)N. The evolved gases, N(2)O and N(2), and the ammonium and nitrate concentrations in the soils were measured together with the (15)N abundances over a period of 8 d. Nitrous Oxide was produced in all soils by denitrification. Nitrate was reduced to N(2) at higher soil pH (LAM) and in the AFF. The end product of denitrification at the lower soil pH (AM) was N(2)O The N(2)O and N(2) emission calculated on an areal basis decreased from LAM, AFF, to AM. The N(2)O/(N(2)O+N(2)) ratios decreased from AM (1.0), AFF (0.97), to LAM (0.80) during the initial period indicating that the main product of denitrification was N(2)O. On prolonged incubation the N(2)O/(N(2)O+N(2)) ratios decreased for AFF and LAM to 0.78 and 0.32, respectively, and was attributed to a gradual decrease in nitrate concentration. We estimate the in situ N(2) emissions to he 0.71 and 0.51 kg N ha(-1) yr(-1) for the Gottinger Wald and the Solling, using published annual in situ N(2)O emissions and our N(2)/N(2)O ratios. The in situ N(2)O emissions of the Gottinger Wald and Solling are 0.17 and 3 kg ha(-1) yr(-1) and the N(2) emissions increased the annual denitrification losses to about 0.88 and 3.51 kg ha(-1) yr(-1). The approach for estimating in situ N(2) emissions has to be improved in future studies."],["dc.identifier.isi","000186450500027"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/45059"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Soil Sci Soc Amer"],["dc.relation.issn","0361-5995"],["dc.title","Dinitrogen and nitrous oxide formation in beech forest floor and mineral soils"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1356"],["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Rapid Communications in Mass Spectrometry"],["dc.bibliographiccitation.lastpage","1360"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Yamulki, S."],["dc.contributor.author","Wolf, I."],["dc.contributor.author","Bol, R."],["dc.contributor.author","Grant, B."],["dc.contributor.author","Brumme, Rainer"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Jarvis, S. C."],["dc.date.accessioned","2017-09-07T11:43:33Z"],["dc.date.available","2017-09-07T11:43:33Z"],["dc.date.issued","2002"],["dc.identifier.doi","10.1002/1097-0231(20000815)14:15<1356"],["dc.identifier.gro","3150176"],["dc.identifier.pmid","10920355"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6912"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","0951-4198"],["dc.title","Effects of dung and urine amendments on the isotopic content of N2O released from grasslands"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","PII S0038-0717(02)00001-9"],["dc.bibliographiccitation.firstpage","741"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Soil Biology and Biochemistry"],["dc.bibliographiccitation.lastpage","744"],["dc.bibliographiccitation.volume","34"],["dc.contributor.author","Wolf, I."],["dc.contributor.author","Brumme, Rainer"],["dc.date.accessioned","2018-11-07T10:30:27Z"],["dc.date.available","2018-11-07T10:30:27Z"],["dc.date.issued","2002"],["dc.description.abstract","A N-15 tracer field experiment was carried out in an acid soil of a beech forest gap at the Solling area in Germany to determine the different formation processes of N2O. This site has been classified as a seasonal N2O emission type forest. Small amounts of highly enriched N-15 tracer were supplied separately as labelled NH4+ and NO3- seven times from May to October 1998. The N-15 compounds were injected with syringes into the upper 10 cm of the soil. The N2O emission showed a seasonal pattern with low emission in spring, high emission in summer, and low emission in autumn and followed the soil temperature. N2O was evolved only from the N-15-labelled NO3- pool in summer under field moist conditions, indicating that its formation was due to denitrification. In spring, early summer and autumn trapped NO or heterotrophic nitrification may also have been involved in N2O emission. (C) 2002 Elsevier Science Ltd. All rights reserved."],["dc.identifier.doi","10.1016/S0038-0717(02)00001-9"],["dc.identifier.isi","000175658800023"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43873"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","0038-0717"],["dc.title","Contribution of nitrification and denitrification sources for seasonal N2O emissions in an acid German forest soil"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]