Methane emissions generated by rice crops in the Rioja district and proposed environmental mitigation measures
DOI:
https://doi.org/10.51252/reacae.v3i1.578Keywords:
methane emissions, emission factor, greenhouse gases, carbon footprintAbstract
The main objective of this research was to determine methane (CH4) emissions generated by rice cultivation in the Rioja district and propose environmental mitigation measures. A total of 89 farmers from the El Progreso - Rioja users' commission were interviewed using a personal interview and a questionnaire. To calculate methane emissions, the methodology developed by the IPCC (1996) was used. This involved multiplying the harvested hectares by the emission factor for the irrigation system, determining the multiplication of the scale factor by the correction factor for organic fertilizers and the emission factor for seasonal variations. These calculations allowed for the proposal of mitigation measures. The results indicated that, over a five-year study period, an average of 181,70 hectares were harvested, with an average of 2,4 hectares per user and a total average annual harvest of 2 376,96 hectares. The emission factor was determined to be 20,0 g/m2, equivalent to 0,2 t/ha. The annual average methane emissions were calculated as 36.34 tCH4, with emissions per hectare amounting to 0,2 tCH4. The annual average emissions per user were 0,41 tCH4, resulting in a total of 475, 28 tCH4 per year. These emissions contributed to a carbon footprint of 9 980,84 tCO2eq.
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