Carbon Stock
Carbon Stock Metric Description: This metric focus on the carbon stock (i.e. amount of carbon stored) both in vegetation and soils globally.
Figure 1. Global rank of carbon stock Data Sources: Dataset Used
Reference
Biomass Carbon Map (2000)
Ruesch A, Gibbs HK (2008) New IPCC Tier-1 Global Biomass Carbon Map For the Year 2000. Science 344(6187): 1246752
Access
Permission*
http://databasin.org/dataset s/2d7ed4b20ed2439f8ba3d2 976d6aa801 Doc or http://cdiac.ornl.gov/ http://databasin.org/dataset s/a4cb6d367eae4e52a08902 Soil Organic 874f8bfedf Global Soil Data Task Group (2002) Carbon or Global Soil Organic Carbon Density in Doc Density http://www.sage.wisc.edu/a kg Carbon/m2 to 1 meter depth. (2002) tlas/maps.php?datasetid=21 &includerelatedlinks=1&dat aset=21 *Doc indicates metadata data identifies a Creative Commons Attribution 3.0 (see http://creativecommons.org/licenses/by/3.0/) and/or no use restrictions, Author indicates permission granted by publisher of data, Both indicates both metadata documentation and author provided permission.
Methods Description: We produced a global, carbon stock metric using a global vegetation biomass carbon stocks map (Ruesch & Gibbs, 2008) and the global soil organic carbon density map (Global Soil Data Task Group, 2002). We multiplied soil organic carbon by 1000 to convert kg C/m2 values to 0.01 tons C/hectare (i.e. vegetation biomass units). We then summed these carbon values with units of 0.01 tons C/hectare, maintaining the 1km resolution of the vegetation biomass carbon stock map. Finally, we calculated the average summed value at 10km resolution and area-ranked 1-100 these averages. All unassessed areas were set to -99. Detailed Data Processing Steps: Step 1. Multiplied soil organic carbon by 1000 to convert kg C/m2 values to 0.01 tons C/hectare a. Conversions: 10 kg = 0.01 tonnes and 10,000 m2 = hectare Step 2. Summed values at 1km resolution Step 3. Resampled to 10km resolution calculating the mean carbon stock value. Step 4. Spatially-ranked mean values Preferred Data Citation: The Nature Conservancy (2015). Carbon stock ranking for Biodiversity and Ecosystems Services Trends and Conditions Assessment Tool (BestCat). Available at www.bestcat.org, date downloaded. Please also cite all source data which derived this ranking. Contact: Jim Oakleaf, Conservation Geographer Development by Design, The Nature Conservancy [email protected] References:
Global Soil Data Task Group. (2002). Global Soil Organic Carbon Density in kg Carbon/m2 to 1 meter depth. Retrieved January 15, 2015, from http://www.sage.wisc.edu/atlas/maps.php?datasetid=21&includerelatedlinks=1&dataset= 21 Ruesch, A., & Gibbs, H. K. (2008). New IPCC Tier-1 Global Biomass Carbon Map For the Year 2000. Retrieved April 28, 2014, from http://cdiac.ornl.gov/
Figure 1. Global rank of carbon stock Data Sources: Dataset Used
Reference
Biomass Carbon Map (2000)
Ruesch A, Gibbs HK (2008) New IPCC Tier-1 Global Biomass Carbon Map For the Year 2000. Science 344(6187): 1246752
Access
Permission*
http://databasin.org/dataset s/2d7ed4b20ed2439f8ba3d2 976d6aa801 Doc or http://cdiac.ornl.gov/ http://databasin.org/dataset s/a4cb6d367eae4e52a08902 Soil Organic 874f8bfedf Global Soil Data Task Group (2002) Carbon or Global Soil Organic Carbon Density in Doc Density http://www.sage.wisc.edu/a kg Carbon/m2 to 1 meter depth. (2002) tlas/maps.php?datasetid=21 &includerelatedlinks=1&dat aset=21 *Doc indicates metadata data identifies a Creative Commons Attribution 3.0 (see http://creativecommons.org/licenses/by/3.0/) and/or no use restrictions, Author indicates permission granted by publisher of data, Both indicates both metadata documentation and author provided permission.
Methods Description: We produced a global, carbon stock metric using a global vegetation biomass carbon stocks map (Ruesch & Gibbs, 2008) and the global soil organic carbon density map (Global Soil Data Task Group, 2002). We multiplied soil organic carbon by 1000 to convert kg C/m2 values to 0.01 tons C/hectare (i.e. vegetation biomass units). We then summed these carbon values with units of 0.01 tons C/hectare, maintaining the 1km resolution of the vegetation biomass carbon stock map. Finally, we calculated the average summed value at 10km resolution and area-ranked 1-100 these averages. All unassessed areas were set to -99. Detailed Data Processing Steps: Step 1. Multiplied soil organic carbon by 1000 to convert kg C/m2 values to 0.01 tons C/hectare a. Conversions: 10 kg = 0.01 tonnes and 10,000 m2 = hectare Step 2. Summed values at 1km resolution Step 3. Resampled to 10km resolution calculating the mean carbon stock value. Step 4. Spatially-ranked mean values Preferred Data Citation: The Nature Conservancy (2015). Carbon stock ranking for Biodiversity and Ecosystems Services Trends and Conditions Assessment Tool (BestCat). Available at www.bestcat.org, date downloaded. Please also cite all source data which derived this ranking. Contact: Jim Oakleaf, Conservation Geographer Development by Design, The Nature Conservancy [email protected] References:
Global Soil Data Task Group. (2002). Global Soil Organic Carbon Density in kg Carbon/m2 to 1 meter depth. Retrieved January 15, 2015, from http://www.sage.wisc.edu/atlas/maps.php?datasetid=21&includerelatedlinks=1&dataset= 21 Ruesch, A., & Gibbs, H. K. (2008). New IPCC Tier-1 Global Biomass Carbon Map For the Year 2000. Retrieved April 28, 2014, from http://cdiac.ornl.gov/
