Figure : soil-c-flux-figure-5-4

Soil Carbon Fluxes for Major Cropping Systems in the United States

Figure 5.2

This figure appears in chapter 5 of the Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report report.

Values, in million metric tons of carbon (MMT C), are annual means from 2003 to 2007. Positive values represent net carbon emissions from the system to the atmosphere, and negative values represent net carbon emissions from the atmosphere to system. Categories are mutually exclusive, and not all cropped land is included. Category definitions are based on the majority land use over the 5-year time period. For example, if a land parcel was cropped with maize or soybeans for at least 3 out of the 5 years, it was placed in the row-crop category. Similarly, if a land parcel was crop free during the growing season for at least 3 years, it was placed in the fallow category. Key: CRP, U.S. Department of Agriculture Conservation Reserve Program. [Data source: Del Grosso and Baranski 2016.]

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This figure was created on November 28, 2017.

This figure was submitted on February 22, 2019.

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