Changes in Soil Carbon Storage After Cultivation
- Oak Ridge National Laboratory, Environmental Sciences Division
Previously published data from 625 paired soil samples were used to predict carbon in cultivated soil as a function of initial carbon content. A 30-cm sampling depth provided a less variable estimate (r2 = 0.9) of changes in carbon than a 15-cm sampling depth (r2 = 0.6). Regression analyses of changes in carbon storage in relation to years of cultivation confirmed that the greatest rates of change occurred in the first 20 y. An initial carbon effect was present in all analyses: soils very low in carbon tended to gain slight amounts of carbon after cultivation, but soils high in carbon lost at least 20% during cultivation. Carbon losses from most agricultural soils are estimated to average less than 20% of initial values or less than 1.5 kg/m2 within the top 30 cm. These estimates should not be applied to depths greater than 30 cm and would be improved with more bulk density information and equivalent sample volumes.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/programs/CSEQ/terrestrial/mann1986/mann1986.html
- 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)
- OSTI ID:
- 1389524
- Report Number(s):
- doi:10.3334/CDIAC/TCM.007; cdiac:doi 10.3334/CDIAC/tcm.007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Changes
Carbon
cultivation
soil organic Carbon
Nitrogen
after
Carbon Cycle
Carbon Sequestration
Soil carbon
Deforestation
CARBON SEQUESTRATION-TERRESTRIAL
Soil taxation
Upper Depth (cm)
Lower Depth (cm)
Total C uncultivated (km/m^2)
Total C cultivated (km/m^2)
C uncultivated (%)
C cultivated (%)
Years in cultivation
Author
Date of Publication