2.1.1. Estimation of mitigation potential of climate related agriculture investments using the Ex-ante Carbon balance Tool (Ex-act) Climate change mitigation benefits of climate-smart agriculture investment activities are estimated using the Ex-ante Carbon balance Tool (Ex-act) which can analyze the impact on GHG emissions and carbon sequestration of different land use scenarios. Ex-act has been developed using mostly the IPCC Guidelines for National Greenhouse Gas Inventories complemented with other methodologies and review of default coefficients for mitigation option as a base. The tool compares the baseline scenario (‘without project’, i.e. business as usual) and the ‘with project’ case, computing the Carbon-balance, selected as an indicator of mitigation potential. Duration of accounting is set at 20 years. Ex-act is a land-based accounting system, measuring Carbon stocks and stock changes per unit of land, as well as Methane (CH4) and Nitrous Oxide (N2O) emissions expressing its results in tonnes of Carbon Dioxide equivalent per hectare (t CO2e ha-1) and per year (t CO2e yr-1). The tool allows to model different climates and agro-ecologies (e.g. tropical, temperate, Mediterranean, etc.). A full description of the Ex-act structure and methodology can be found in Bernoux et al. (2010). The output of this analytical phase is represented by an estimation of the environmental benefits of selected investment activities in the form of GHG abated and Carbon sequestered. This will represent the unitary abatement potential of each CSA technology which will be taken into account in the second methodological step.
2.1.1. Estimation of mitigation potential of climate related agriculture investments using the Ex-ante Carbon balance Tool (Ex-act) Climate change mitigation benefits of climate-smart agriculture investment activities are estimated using the Ex-ante Carbon balance Tool (Ex-act) which can analyze the impact on GHG emissions and carbon sequestration of different land use scenarios. Ex-act has been developed using mostly the IPCC Guidelines for National Greenhouse Gas Inventories complemented with other methodologies and review of default coefficients for mitigation option as a base. The tool compares the baseline scenario (‘without project’, i.e. business as usual) and the ‘with project’ case, computing the Carbon-balance, selected as an indicator of mitigation potential. Duration of accounting is set at 20 years. Ex-act is a land-based accounting system, measuring Carbon stocks and stock changes per unit of land, as well as Methane (CH4) and Nitrous Oxide (N2O) emissions expressing its results in tonnes of Carbon Dioxide equivalent per hectare (t CO2e ha-1) and per year (t CO2e yr-1). The tool allows to model different climates and agro-ecologies (e.g. tropical, temperate, Mediterranean, etc.). A full description of the Ex-act structure and methodology can be found in Bernoux et al. (2010). The output of this analytical phase is represented by an estimation of the environmental benefits of selected investment activities in the form of GHG abated and Carbon sequestered. This will represent the unitary abatement potential of each CSA technology which will be taken into account in the second methodological step.
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