Understanding N2O emissions in African ecosystems: Assessments from a semi-arid Savanna grassland in Senegal and sub-tropical agricultural fields in Kenya

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationUniversité de Toulouseen
cg.contributor.affiliationInstitut Sénégalais de Recherches Agricolesen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.affiliationAgroscopeen
cg.contributor.affiliationLund Universityen
cg.contributor.affiliationUniversity of Copenhagenen
cg.contributor.crpClimate Change, Agriculture and Food Securityen
cg.contributor.crpLivestocken
cg.contributor.donorAustralian Centre for International Agricultural Researchen
cg.contributor.donorEuropean Unionen
cg.contributor.donorIrish Aiden
cg.contributor.donorInternational Fund for Agricultural Developmenten
cg.contributor.donorUnited States Agency for International Developmenten
cg.coverage.countryKenyaen
cg.coverage.countrySenegalen
cg.coverage.iso3166-alpha2KEen
cg.coverage.iso3166-alpha2SNen
cg.coverage.regionAfricaen
cg.coverage.regionSub-Saharan Africaen
cg.coverage.regionEastern Africaen
cg.coverage.regionWestern Africaen
cg.creator.identifierClaire Delon: 0000-0003-2657-4267en
cg.creator.identifierTiphaine Tallec: 0000-0002-9893-1123en
cg.creator.identifierLutz Merbold: 0000-0003-4974-170Xen
cg.creator.identifierTorbern Tagesson: 0000-0003-3011-1775en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.3390/su12218875en
cg.isijournalISI Journalen
cg.issn2071-1050en
cg.issue21en
cg.journalSustainabilityen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaResilient Agrifood Systemsen
cg.subject.ilriAGRICULTUREen
cg.subject.ilriCLIMATE CHANGEen
cg.subject.ilriGHG EMISSIONSen
cg.subject.ilriNRMen
cg.subject.impactAreaClimate adaptation and mitigationen
cg.subject.sdgSDG 13 - Climate actionen
cg.volume12en
dc.contributor.authorBigaignon, Len
dc.contributor.authorDelon, Cen
dc.contributor.authorNdiaye, Oen
dc.contributor.authorGaly-Lacaux, Cen
dc.contributor.authorSerça, Den
dc.contributor.authorGuérin, Fen
dc.contributor.authorTallec, Ten
dc.contributor.authorMerbold, Lutzen
dc.contributor.authorTagesson, Ten
dc.contributor.authorFensholt, Ren
dc.contributor.authorAndré, Aen
dc.contributor.authorGalliau, Sen
dc.date.accessioned2022-10-18T05:48:05Zen
dc.date.available2022-10-18T05:48:05Zen
dc.identifier.urihttps://hdl.handle.net/10568/125069
dc.titleUnderstanding N2O emissions in African ecosystems: Assessments from a semi-arid Savanna grassland in Senegal and sub-tropical agricultural fields in Kenyaen
dcterms.abstractThis study is based on the analysis of field-measured nitrous oxide (N2O) emissions from a Sahelian semi-arid grassland site in Senegal (Dahra), tropical humid agricultural plots in Kenya (Mbita region) and simulations using a 1D model designed for semi arid ecosystems in Dahra. This study aims at improving present knowledge and inventories of N2O emissions from the African continent. N2O emissions were larger at the agricultural sites in the Mbita region (range: 0.0 ± 0.0 to 42.1 ± 10.7 ngN m−2 s−1) than at the Dahra site (range: 0.3 ± 0 to 7.4 ± 6.5 ngN m−2 s−1). Soil water and nitrate (NO3−) contents appeared to be the most important drivers of N2O emissions in Dahra at the seasonal scale in both regions. The seasonal pattern of modelled N2O emissions is well represented, though the model performed better during the rainy season than between the rainy and dry seasons. This study highlighted that the water-filled pore space threshold recognised as a trigger for N2O emissions should be reconsidered for semi-arid ecosystems. Based on both measurements and simulated results, an annual N2O budget was estimated for African savanna/grassland and agricultural land ranging between 0.17–0.26 and 1.15–1.20 TgN per year, respectively.en
dcterms.accessRightsOpen Accessen
dcterms.audienceScientistsen
dcterms.available2020-10-26en
dcterms.bibliographicCitationBigaignon, L., Delon, C., Ndiaye, O., Galy-Lacaux, C., Serça, D., Guérin, F., Tallec, T., Merbold, L., Tagesson, T., Fensholt, R., André, S. and Galliau, S. 2020. Understanding N2O emissions in African ecosystems: Assessments from a semi-arid Savanna grassland in Senegal and sub-tropical agricultural fields in Kenya. Sustainability 12(21):8875.en
dcterms.issued2020-11-01en
dcterms.languageenen
dcterms.licenseCC-BY-4.0en
dcterms.publisherMDPIen
dcterms.subjectnitrous oxideen
dcterms.subjectsavannahsen
dcterms.subjectgrasslandsen
dcterms.typeJournal Articleen

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