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dc.contributor.author Pelster, David
dc.contributor.author Rufino, Mariana Cristina
dc.contributor.author Rosenstock, Todd
dc.contributor.author Mango, Joash
dc.contributor.author Saiz, Gustavo
dc.contributor.author Diaz Pines, Eugenio
dc.contributor.author Baldi, Germán
dc.contributor.author Butterbach Bahl, Klaus
dc.date.available 2018-12-17T19:36:27Z
dc.date.issued 2017-01-12
dc.identifier.citation Pelster, David; Rufino, Mariana Cristina; Rosenstock, Todd; Mango, Joash; Saiz, Gustavo; et al.; Smallholder farms in eastern African tropical highlands have low soil greenhouse gas fluxes; Copernicus Publications; Biogeosciences; 14; 1; 12-1-2017; 187-202
dc.identifier.issn 1726-4170
dc.identifier.uri http://hdl.handle.net/11336/66601
dc.description.abstract Few field studies examine greenhouse gas (GHG) emissions from African agricultural systems, resulting in high uncertainty for national inventories. This lack of data is particularly noticeable in smallholder farms in sub-Saharan Africa, where low inputs are often correlated with low yields, often resulting in food insecurity as well. We provide the most comprehensive study in Africa to date, examining annual soil CO2, CH4 and N2O emissions from 59 smallholder plots across different vegetation types, field types and land classes in western Kenya. The study area consists of a lowland area (approximately 1200ma.s.l.) rising approximately 600m to a highland plateau. Cumulative annual fluxes ranged from2.8 to 15.0MgCO2-Cha-1,-6.0 to 2.4kgCH4-Cha-1 and-0.1 to 1.8kgN2O-Nha-1. Management intensity of the plots did not result in differences in annual GHG fluxes measured (P Combining double low line 0.46, 0.14 and 0.67 for CO2, CH4 and N2O respectively). The similar emissions were likely related to low fertilizer input rates (≤20kgNha-1). Grazing plots had the highest CO2 fluxes (P Combining double low line 0.005), treed plots (plantations) were a larger CH4 sink than grazing plots (P Combining double low line 0.05), while soil N2O emissions were similar across vegetation types (P Combining double low line 0.59). This study is likely representative for low fertilizer input, smallholder systems across sub-Saharan Africa, providing critical data for estimating regional or continental GHG inventories. Low crop yields, likely due to low fertilization inputs, resulted in high (up to 67gN2O-Nkg-1 aboveground N uptake) yield-scaled emissions. Improvement of crop production through better water and nutrient management might therefore be an important tool in increasing food security in the region while reducing the climate footprint per unit of food produced.
dc.format application/pdf
dc.language.iso eng
dc.publisher Copernicus Publications
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject GHG inventories
dc.subject.classification Meteorología y Ciencias Atmosféricas
dc.subject.classification Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Smallholder farms in eastern African tropical highlands have low soil greenhouse gas fluxes
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-10-23T17:38:29Z
dc.identifier.eissn 1726-4189
dc.journal.volume 14
dc.journal.number 1
dc.journal.pagination 187-202
dc.journal.pais Alemania
dc.journal.ciudad Gottingen
dc.description.fil Fil: Pelster, David. International Livestock Research Institute; Kenia
dc.description.fil Fil: Rufino, Mariana Cristina. Centre for International Forestry Research; Kenia. Lancaster University; Reino Unido
dc.description.fil Fil: Rosenstock, Todd. World Agroforestry Centre; Kenia
dc.description.fil Fil: Mango, Joash. World Agroforestry Centre; Kenia
dc.description.fil Fil: Saiz, Gustavo. Karlsruhe Institute of Technology; Alemania
dc.description.fil Fil: Diaz Pines, Eugenio. Karlsruhe Institute of Technology; Alemania
dc.description.fil Fil: Baldi, Germán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina
dc.description.fil Fil: Butterbach Bahl, Klaus. International Livestock Research Institute; Kenia. Karlsruhe Institute of Technology; Alemania
dc.journal.title Biogeosciences
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.5194/bg-14-187-2017
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://www.biogeosciences.net/14/187/2017/
dc.conicet.fuente individual


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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)