Every project needs to take into account emissions that arise from running it (see Part 4, Division 4 in the method). This is to ensure these emissions are included in calculations that determine net CO2-e abatement for a reporting period and crediting period.
CO2-e expresses the warming effect of different greenhouse gases as an equivalent amount of carbon dioxide. It is the amount of carbon dioxide that would give the same warming effect as each greenhouse gas that is emitted or stored by an activity. For example, methane (CH4) has a Global warming potential (GWP) of 25, which means 1 tonne of CH4 is 25 tonnes of CO2-e.
Only those greenhouse gases from emissions sources outlined in Section 46 are included when calculating CO2-e for a soil carbon project.
For each CEA, identify which emissions sources listed in Sections 67–71 are relevant to your project. Use the equation trees in Figure 6 to calculate project emissions from livestock, synthetic fertiliser, lime, crop residues and irrigation energy use. If the project is a sustainable intensification project and irrigation is chosen as the management action, calculation of irrigation energy use is compulsory (Section 71).
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