HR: 16:00h
AN: B44B-01    [Abstracts]
TI: Developing Bottom-Up Estimates of Net Carbon Flux Using Survey Data, Remote Sensing, and Economic Modeling: A Case Study for Agricultural Lands in the U.S. Mid-Continental Region
AU: * West, T O
EM: westto@ornl.gov
AF: Oak Ridge National Laboratory Environmental Sciences Division, P.O. Box 2008, Oak Ridge, TN 37831-6335 United States
AU: Brandt, C C
EM: brandtcc@ornl.gov
AF: Oak Ridge National Laboratory Environmental Sciences Division, P.O. Box 2008, Oak Ridge, TN 37831-6335 United States
AU: De La Torre Ugarte, D
EM: danieltu@utk.edu
AF: University of Tennessee Agricultural Policy Analysis Center, 310 Morgan Hall, Knoxville, TN 37996-4519 United States
AU: Larson, J A
EM: jlarson2@utk.edu
AF: University of Tennessee Agricultural Policy Analysis Center, 310 Morgan Hall, Knoxville, TN 37996-4519 United States
AU: Hellwinkle, C
EM: chellwin@utk.edu
AF: University of Tennessee Agricultural Policy Analysis Center, 310 Morgan Hall, Knoxville, TN 37996-4519 United States
AU: Wilson, B
EM: driver8@utk.edu
AF: University of Tennessee Agricultural Policy Analysis Center, 310 Morgan Hall, Knoxville, TN 37996-4519 United States
AU: Marland, G
EM: gregg.marland@miun.se
AF: Mid Sweden University, Ecotechnology Program, Ostersund, S-83125 Sweden
AB: Estimates of net carbon-equivalent (Ceq) flux of greenhouse gases to the atmosphere from agricultural lands in the U.S. can be made on an annual basis using existing survey data and remote sensing. Integrating these data sets with the POLYSYS agricultural economics model will allow for estimates of future changes in land use and Ceq emissions that will be associated with carbon management incentives or changes in land-use policies (e.g., Farm Bill and land conservation policies). We are examining carbon sinks and Ceq sources for agricultural lands at the county scale and at a resolution commensurate with remotely sensed land-use data. Carbon sinks and sources include changes in soil carbon stocks; CO2 and N2O emissions associated with the production, transport, and application of agricultural inputs; carbon uptake by crops; and emissions from livestock. This presentation places emphasis on the development and structure of the accounting framework, on the data inputs, and on the mechanisms that will be used to update these inputs on a regular basis. Different accounting methods that may be implemented in the framework to account for either on-site net emissions or first order, upstream emissions associated with new land-use practices will also be discussed. Results are presented for the U.S. mid-continental region in a manner that can be compared to atmospheric top-down modeling approaches for estimating net carbon flux from terrestrial ecosystems.
DE: 0402 Agricultural systems
DE: 0426 Biosphere/atmosphere interactions (0315)
DE: 0428 Carbon cycling (4806)
DE: 0478 Pollution: urban, regional and global (0345, 4251)
DE: 0480 Remote sensing
SC: Biogeosciences [B]
MN: Fall Meeting 2005