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.
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 Other maps focus on small areas, are outdated or are not transparent regarding their data sources and methodology.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.
News and events
Honduras now available in the GRAS Tool
Honduras is now available in GRAS. The dataset includes layers on Land Use Change, Biodiversity, Carbon Stock and Social Data. GRAS will add more countries in Central America and other world regions soon.
March 13th 2018
We cordially invite you to join the free webinar on how to “Implement and Monitor Deforestation-Free Supply Chains” with GRAS, taking place on 13 March 2018, 10:00 am (CET) and 5:00 pm (CET). The webinar will give you an insight on new functionalities of GRAS, outline recent case studies and give the attendants the chance to ask their questions. Register for the webinar here.
March 2nd 2018
Addressing the sustainability of sugarcane
In the recent issue of Biofuels International, GRAS is presented as a secure and credible solution provider for companies to prove compliance with national and international sustainability regulations and corporate commitments. The article shows how GRAS can be used to identify deforestation and grassland conversion and determine the exact point in time the land use change took place. The full article can be found here.
February 27th 2018
Sub-national data on Acute Food Insecurity now online for the Democratic Republic of the Congo
Food Security Classification data of FEWS NET (Famine Early Warning Systems Network) for the Democratic Republic of the Congo is now available in GRAS. The dataset includes near and medium term projections, and is updated on a monthly basis.
February 21st 2018
Colombia, South Africa and Peru now available in the GRAS Tool
GRAS added Colombia, South Africa and Peru to the Web Tool. The datasets include layers on Land Use Change, Biodiversity, Carbon Stock and Social Data. More countries will follow soon.
January 31st 2018
GHG values for canola cultivation in Australia and Canada now online
GHG emission values for canola cultivation in Australia and Canada, officially acknowledged by the European Commission, are now available in GRAS. The values have been published in the Commission Implementing Decisions (EU) 2017/2356 and (EU) 2017/2379, respectively.
January 29th 2018
GRAS Fire Alert online now
The new GRAS Fire Alert function is now available for Indonesia and countries in South America. Beside the visualization of latest and historical fires within the tool, the user can now register for an e-mail alert. The user will be informed based on daily updates, in case a fire was identified within an area individually defined by himself.
January 11th 2018
GRAS article in ITC News
GRAS wrote an article in ITC News (2017-2), the alumni magazine of the Faculty of Geo-Information Science and Earth Observation of the University of Twente. The article presents how GRAS provides solutions for a fact-based, objective and credible sustainability reporting and the support of efficient and reliable sustainability certification. The magazine contains results of an interdisciplinary workshop in Enschede, Netherlands.
January 10th 2018
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