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Carbon Stock

Land use and land use change is the second largest anthropogenic source of carbon dioxide in the atmosphere after fossil fuel combustion. It is clear that it is practically impossible to constrain the impacts of climate change within the reasonably tolerable limits of society without reducing emissions from land use and land use change.

Carbon Stock

A complete carbon map shows the carbon stored in all of the biomass and soil. The use of maps to determine forest biomass carbon has already become a common tool for countries preparing for UN-REDD+ (The United Nations Programme on Reducing Emissions from Deforestation and Forest Degradation in Developing Countries). However, due to their contrasting purposes, they focus only on determining carbon in tropical forest biomass and mostly do not include soil carbon stocks or other types of biomass. Other maps focus on small areas, are outdated or are not transparent regarding their data sources and methodology. That´s why GRAS includes its own carbon layers displaying the full carbon stock in biomass and soil based on scientifically verified methodology and transparent data sources.



For determining the full carbon stock, the carbon stock in biomass and soil are calculated separately and then combined in one single map building upon methodology laid out in the IPCC 2006. The carbon stocks in biomass are determined by combining land cover maps officially recognized by the relevant authorities in the countries with carbon values for each land cover class from the scientific literature. For Indonesia for example, the official land cover map of the Indonesian Ministry of Forestry is used.  Carbon stocks in the soil are compiled by using the FAO (Food and Agriculture Organization of the United Nations) Harmonized World Soil Database (HWSD) generated by IIASA (International Institute for Applied Systems Analysis). The IPCC 2006 provides the relevant carbon values for the different soil categories. This two-tier approach allows a consistent and comparable determination of carbon stocks in each country

Please learn more about the carbon map calculation in Methodology.