%0 Journal Article
%T Assessment of the Contribution of Flooded Rice Cultivation Systems to Methane Emissions in the Lower Ouémé Valley, in Benin Republic
%A Julien Adounkpe
%A Othniel Ahoudji
%A Brice Sinsin
%J Journal of Agricultural Chemistry and Environment
%P 327-344
%@ 2325-744X
%D 2021
%I Scientific Research Publishing
%R 10.4236/jacen.2021.103021
%X Flooded rice cultivation fields appear to be the major source of methane emission. In Benin Republic, flooded rice is cultivated in the Niger River and Ou¨¦m¨¦ River Basins. The present study aims to assess the contribution of flooded rice cultivation systems to methane emissions in the lower Ou¨¦m¨¦ Valley. Methane emission calculation was based on Activity Data which is the flooded rice harvested surface area from 2008 to 2017. The Tier 2 methodology of the IPCC 2006 Guidelines¡¯ and the complements of the ¡°Refinement 2019¡± have been used to elaborate the specific emission factors for the lower valley of Ou¨¦m¨¦ and to estimate the emission of methane in this zone. Semi-structured interviews were conducted with producers in order to elaborate on their perceptions of gas emissions in the flooded rice fields. The EX-ACT tool was used to estimate the carbon footprint of the intensive rice cultivation system ¡°SRI¡± and the conventional rice cultivation system ¡°SRC¡±. It is shown that producers have a strong perception of gas emissions in rice fields but are totally unaware of the nature of the gas. Methane emitted in the lower valley of the Ou¨¦m¨¦ is around 528 tons/year between 2008 and 2017 while the carbon footprint resulting from the results of EX-ACT for the adoption of the SRI rises to the level of sequestration of approximately 0.4 tCH4/ha/year. The intensive rice cultivation system has been identified as the production system that minimizes methane emissions and maximizes rice production.
%K Flooded Rice Cultivation
%K Methane
%K Lower Valley of Ou&#233
%K m&#233
%K Greenhouse Gases
%K Climate Change
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=110895