Changes in Soil Carbon Storage After Cultivation

Dataset · Thu Jul 25 00:00:00 EDT 1985

DOI:https://doi.org/10.3334/CDIAC/TCM.007· OSTI ID:1389524

Mann, L. K. ^[1]

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1. Oak Ridge National Laboratory, Environmental Sciences Division; OSTI

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
• 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

Related Subjects

54 ENVIRONMENTAL SCIENCES
Author
C cultivated (%)
C uncultivated (%)
CARBON SEQUESTRATION-TERRESTRIAL
Carbon
Carbon Cycle
Carbon Sequestration
Changes
Date of Publication
Deforestation
Lower Depth (cm)
Nitrogen
Soil carbon
Soil taxation
Total C cultivated (km/m^2)
Total C uncultivated (km/m^2)
Upper Depth (cm)
Years in cultivation
after
cultivation
soil organic Carbon