Regional uptake and release of crop carbon in the United States

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Biogeosciences

DOI:https://doi.org/10.5194/bg-8-2037-2011· OSTI ID:1042743

West, Tristram O. ^[1]; Bandaru, Vara Prasad ^[1]; Branstetter, Marcia L. ^[2]; Brandt, Craig C ^[1]; Schuh, Andrew ^[3]; Ogle, Stephan ^[3]

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1. ORNL
2. Oak Ridge National Laboratory (ORNL)
3. Colorado State University, Fort Collins

Carbon fixed by agricultural crops in the US creates regional CO(2) sinks where it is harvested and regional CO(2) sources where it is released back to the atmosphere. The quantity and location of these fluxes differ depending on the annual supply and demand of crop commodities. Data on the harvest of crop biomass, storage, import and export, and on the use of biomass for food, feed, fiber, and fuel were compiled to estimate an annual crop carbon budget for 2000 to 2008. With respect to US Farm Resource Regions, net sources of CO(2) associated with the consumption of crop commodities occurred in the Eastern Uplands, Southern Seaboard, and Fruitful Rim regions. Net sinks associated with the production of crop commodities occurred in the Heartland, Northern Great Plains, and Mississippi Portal regions. The national crop carbon budget was balanced to within 0.3 to 6.1% yr(-1) during the period of this analysis.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: ORNL work for others
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1042743
• Journal Information: Biogeosciences, Journal Name: Biogeosciences Journal Issue: 8 Vol. 8; ISSN 1726-4189
• Country of Publication: United States
• Language: English