The proposed decision support tool (DST) will be a calculator of GHG emissions and storage according to land use, associated with a spatial representation of these balances; it will of course integrate all current and alternative practices and will be validated by the knowledge developed during the project as well as by the literature.
The current climate context - in the broadest sense - requires actions that must be supported by reliable, factual data. The role of research organizations in collecting and organizing this data is central. The SeqCOI project will therefore endeavour to make current knowledge available and to co-construct the most useful tools for a territorial policy of GHG emissions mitigation in the agricultural sector through carbon sequestration in the soil and biomass.
For the time being, the target territories concerned by the project are not characterised or described with the same level of precision in terms of carbon sequestration potential. One of the objectives of the project is to have the same quality of information for all target territories. Thus, the three territories will be subject to the same characterization of the environment and the factors controlling the GHG balance. Thanks to the information collected and spatialized, the aim will be to characterize and rank the determinants of GHG emissions and storage on the scale of the territories, by type of use, soil type and climate. The focus will be on the description of agrosystems, but all land uses will be characterized in terms of GHG balance, according to the criteria recommended by the IPCC (activity data and emission factors) for each territory, with a lesser definition for the non-agricultural sector. The methods used are in the field of cartography, spatial imagery, and soil and plant science. All these methods will be applied to the different land use patterns of the different territories.
The characterization of greenhouse gas balances on a territorial scale requires a large amount of data; these data must be organized and stored in such a way that they can be used during the project, and of course beyond. It is therefore proposed to build a common database, adapted to the needs of the project, containing the data obtained during this project and also previous data according to the conditions defined by each partner of the target territories. The co-construction of this database will be inspired by the experience of the 2Carma project.
The SeqCOI project proposes to develop a new GHG balance calculator based on the inventory of existing GHG balance calculators. These calculators are defined as calculation tools, online, in Excel or in another computer format, allowing the evaluation of the emissions of the agricultural and forestry sector with the objective of being decision support tools for the actors of a territory.
This new calculator will be developed in order to calculate the GHG balances of the agriculture and land use sector, by being both adapted to the objectives and territories of the SeqCOI project, and adaptable for a spatial approach of the territory.
The cartographic decision-making tool will be based on the combination of maps and calculators describing the sequestration potential of the different modes of use relevant for each target territory. Each mode of use will be characterized in terms of greenhouse gas storage and emissions, either from the literature or from specific measurements and experiments. Emission factors for each functional compartment of the use patterns will thus be defined and then used in the greenhouse gas emission calculator used in the proposed decision support tool. These emission factors will be applied to the land areas according to the different uses, which will make it possible to propose a spatial balance of emissions for a given territory.
These GHG balances will be spatialized, both at time t0 (current situation) and at time t0 + 20 years (prospective situations) following land use change scenarios. Maps of these GHG balances will be produced in order to help stakeholders to establish territorial climate change mitigation policies in the Indian Ocean.
The decision support tool will be available at the end of the SeqCOI project via a dedicated computer platform, and accessible to all in order to increase the awareness of all actors to the impacts of climate change and the tools to combat it.