Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential

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cg.contributor.affiliationBioversity International and the International Center for Tropical Agricultureen
cg.contributor.affiliationStepup Standard Ltd, Ugandaen
cg.contributor.affiliationWorld Wide Fund for Natureen
cg.contributor.affiliationEthiopian Institute of Agricultural Researchen
cg.contributor.affiliationInternational Center for Tropical Agricultureen
cg.coverage.countryEthiopia
cg.coverage.iso3166-alpha2ET
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.coverage.regionSub-Saharan Africa
cg.creator.identifierSylvia Sarah Nyawira: 0000-0003-4913-1389en
cg.creator.identifierRolf Sommer: 0000-0001-7599-9056en
cg.creator.identifierKristin Persson: 0000-0003-2120-4486en
cg.creator.identifierMats Söderström: 0000-0001-9946-0979en
cg.identifier.doihttps://doi.org/10.1080/02571862.2019.1640296en
cg.isijournalISI Journalen
cg.issn0257-1862en
cg.issue1en
cg.journalSouth African Journal of Plant and Soilen
cg.placeEthiopiaen
cg.reviewStatusPeer Reviewen
cg.subject.ciatSOIL INFORMATIONen
cg.volume37en
dc.contributor.authorNamirembe, Saraen
dc.contributor.authorPiikki, Kristinen
dc.contributor.authorSommer, Rolfen
dc.contributor.authorSöderström, Matsen
dc.contributor.authorTessema, Bezaye Dr.en
dc.contributor.authorNyawira, Sylvia Sarahen
dc.date.accessioned2020-03-04T18:45:31Zen
dc.date.available2020-03-04T18:45:31Zen
dc.identifier.urihttps://hdl.handle.net/10568/107386
dc.titleSoil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potentialen
dcterms.abstractCropland soils are considered to have the potential to sequester atmospheric CO2 through agronomic best management practices (BMPs). To estimate this potential in East Africa, the authors reviewed 69 published studies from Ethiopia, Kenya, Rwanda, Tanzania, Uganda, and Burundi assessing the effect of land use conversion from native vegetation to cropland on soil organic carbon (SOC) and the extent to which carbon sequestration is feasible through BMPs. Reported losses of SOC in the top 30 cm of the soil profile in short (<10 years), medium (10–25 years), and long (>25 years) term were 6.7 ± 6.0, 13.0 ± 9.2, and 2.8 ± 1.0 t C ha–1 year–1, respectively, for forest-to-cropland; and 16.0, 2.1 ± 2.2 and 0.3 ± 0.8 t C ha–1 year–1 respectively, for woodland-to-cropland conversion. Duration to steady-state SOC was 21–38 years for forest-to-cropland conversion. Short-term SOC sequestration (t C ha–1 year–1) in the 0–30 cm layer as a result of BMPs was 19.7 ± 3.9 from crop residues, 14.8 ± 8.7 from farmyard manure, 3.5 ± 4.5 from inorganic fertilizers, 2.7 from agroforestry, and 2.5 from improved fallow. However, the studies reviewed were mostly short-term and concentrated to a few locations. Future research should address these gaps.en
dcterms.accessRightsOpen Access
dcterms.available2020-03-02en
dcterms.bibliographicCitationNamirembe, S.; Piikki, K.; Sommer, R.; Söderström, M.; Tessema, B.; Nyawira, S.S. (2020) Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential. South African Journal of Plant and Soil 15 p. ISSN: 0257-1862en
dcterms.extentp. 35-49en
dcterms.issued2020-01-01en
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherInforma UK Limiteden
dcterms.subjectmanagementen
dcterms.subjectfarmlanden
dcterms.subjectsoil organic carbonen
dcterms.subjectgestionen
dcterms.subjecttierras agricolasen
dcterms.subjectcarbono organico del sueloen
dcterms.subjectecologyen
dcterms.typeJournal Article

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