County-level Estimates for Carbon Distribution in U.S. Croplands, 1990-2005
- Oak Ridge National Laboratory, Environmental Sciences Division
Net Primary Productivity (NPP) for croplands can be estimated using a statistical method that includes factors for dry weight, harvest indices, and root:shoot ratios multiplied by yield data from the National Agricultural Statistics Service (NASS). This method has been documented and published by Prince et al. (2001), Hicke and Lobell (2004), and Hicke et al. (2004). We expanded this method by including factors for more crops and by using an estimated carbon content of 0.45 for agricultural crops to estimate (a) total net carbon uptake, (b) carbon in aboveground biomass, (c) carbon in belowground biomass, (d) carbon harvested and transported off site, and (e) the amount of carbon remaining on the surface following harvest. These five variables are included with their respective Federal Information Processing Standards (FIPS) codes for all counties in the contiguous U.S. from 1990-2005. A mean harvest efficiency of 0.95 was assumed across all crops. Total cropland NPP for the U.S. ranges from 378-527 Tg C yr-1 within years 1990-2005, and total carbon harvested and removed ranges from 161-228 Tg C yr-1 within years 1990-2005.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/carbonmanagement/cropcarbon/
- Research Organization:
- Environmental System Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) (United States)
- Sponsoring Organization:
- U.S. DOE > Office of Science (SC) > Biological and Environmental Research (BER) (SC-23)
- Contributing Organization:
- Carbon Dioxide Information Analysis Center (CDIAC)
- OSTI ID:
- 1389529
- Report Number(s):
- doi:10.3334/CDIAC/TCM.012; cdiac:doi 10.3334/CDIAC/tcm.012
- Country of Publication:
- United States
- Language:
- English
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Energy Use and Carbon Dioxide Emissions from Cropland Production in the United States, 1990-2004
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Related Subjects
County
Cropland
U.S.
Carbon Distribution
Net Primary Productivity
Total Cropland NPP (Tg C yr-1)
Total Carbon harvested and removed (161-228 Tg C yr-1
total net carbon uptake
carbon in aboveground biomass
carbon in belowground biomass
carbon harvested and transported off site
amount of carbon remaining on the surface following harvest