An Estimation of Emission of Methane from Cattle of Bangladesh

Abstract

In Bangladesh, population of cattle are increasing day by day as not only unemployed people but also employed people are doing farming now-a-days. It is a matter of great concern for Bangladesh that effects of greenhouse gases also increasing gradually because some of greenhouse gases e.g., methane, carbon dioxide, nitrous oxide are also component of expiratory gases of cattle respiration. In our study, we have discussed about methane emission from cattle in Bangladesh. We followed Intergovernmental Panel on Climate Change (IPCC) guidelines in our whole study. As IPCC guidelines, we use Tier-1 and Tier-2 methods for the calculation of total methane emission from cattle. In calculation, we showed the emission of methane from cattle using Tier-1 method based on emission factors provided by both IPCC-2006 and IPCC-2019. We also showed the emission value by using Tier-2 system based on dry matter intake. Finally, we have compared our different calculated values obtained by using Tier-1 method for different IPCC provided emission factors and have also shown the comparison of the calculated values obtained from Tier-1 and Tier-2 methods. After calculation, in 2016, 2017, 2018 and 2019 total emission of methane from cattle using Tier-1 method based on the emission factors provide by IPCC-2006 are 932.43, 938.08, 942.48 and 947.15 gigagram respectively and based on emission factors provided by IPCC-2019 total emission are 1348.93, 1357.10, 1364.08 and 1371.52 gigagram respectively. Using Tier-2 method, total emission of methane in those years are 970.95, 976.51, 981.20 and 986.19 gigagram respectively.