Greenhouse gas mitigation potential of Alternate Wetting and Drying for rice production at national scale - A modeling case study for the Philippines

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationKarlsruhe Institute of Technologyen
cg.contributor.affiliationInternational Rice Research Instituteen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.donorDeutsche Forschungsgemeinschaften
cg.contributor.donorCGIAR Trust Funden
cg.contributor.initiativeLow-Emission Food Systems
cg.coverage.countryPhilippines
cg.coverage.iso3166-alpha2PH
cg.coverage.regionAsia
cg.coverage.regionSouth-eastern Asia
cg.creator.identifierBjoern Ole Sander: 0000-0002-7967-6147
cg.creator.identifierKlaus Butterbach-Bahl: 0000-0001-9499-6598
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1029/2022jg006848en
cg.isijournalISI Journalen
cg.issn2169-8961en
cg.issue5en
cg.journalJournal of Geophysical Research: Biogeosciencesen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaResilient Agrifood Systems
cg.subject.impactAreaEnvironmental health and biodiversity
cg.subject.sdgSDG 13 - Climate actionen
cg.volume127en
dc.contributor.authorKraus, Daviden
dc.contributor.authorWerner, Christian R.en
dc.contributor.authorJanz, Balduren
dc.contributor.authorKlatt, Steffenen
dc.contributor.authorSander, Björn Oleen
dc.contributor.authorWassmann, Reineren
dc.contributor.authorKiese, Ralfen
dc.contributor.authorButterbach-Bahl, Klausen
dc.date.accessioned2022-12-06T16:42:21Zen
dc.date.available2022-12-06T16:42:21Zen
dc.identifier.urihttps://hdl.handle.net/10568/125812
dc.titleGreenhouse gas mitigation potential of Alternate Wetting and Drying for rice production at national scale - A modeling case study for the Philippinesen
dcterms.abstractWorldwide, rice production contributes about 10% of total greenhouse gas (GHG) emissions from the agricultural sector, mainly due to CH4 emissions from continuously flooded fields. Alternate Wetting and Drying (AWD) is a promising crop technology for mitigating CH4 emissions and reducing the irrigation water currently being applied in many of the world's top rice-producing countries. However, decreased emissions of CH4 may be partially counterbalanced by increased N2O emissions. In this case study for the Philippines, the national mitigation potential of AWD is explored using the process-based biogeochemical model LandscapeDNDC. Simulated mean annual CH4 emissions under conventional rice production for the time period 2000–2011 are estimated as 1,180 ± 163 Gg CH4 yr−1. During the cropping season, this is about +16% higher than a former estimate using emission factors. Scenario simulations of nationwide introduction of AWD in irrigated landscapes suggest a considerable decrease in CH4 emissions by −23%, while N2O emissions are only increased by +8%. Irrespective of field management, at national scale, the radiative forcing of irrigated rice production is always dominated by CH4 (>95%). The reduction potential of GHG emissions depends on, for example, number of crops per year, residue management, amount of applied irrigation water, and sand content. Seasonal weather conditions also play an important role since the mitigation potential of AWD is almost double as high in dry as compared to wet seasons. Furthermore, this study demonstrates the importance of temporal continuity, considering off-season emissions and the long-term development of GHG emissions across multiple years.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.available2022-05-09
dcterms.bibliographicCitationKraus, D., Werner, C., Janz, B., Klatt, S., Sander, B.O., Wassmann, Kiese R. and Butterbach-Bahl, K. 2022. Greenhouse gas mitigation potential of Alternate Wetting and Drying for rice production at national scale - A modeling case study for the Philippines. Journal of Geophysical Research: Biogeo-sciences 127(5):e2022JG006848. https://doi.org/10.1029/2022JG006848en
dcterms.issued2022-05
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherAmerican Geophysical Unionen
dcterms.subjectclimate changeen
dcterms.subjectclimate change mitigationen
dcterms.subjectfood systemsen
dcterms.subjectpaleontologyen
dcterms.subjectecologyen
dcterms.subjectforestryen
dcterms.typeJournal Article

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