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- W1977159749 abstract "Abstract Soil organic carbon (SOC) is an important component of the global carbon cycle. Its dynamics depends upon various natural and anthropogenic factors including soil erosion. A study on Miamian silty clay loam soil in central Ohio was conducted to investigate the effect of soil erosion on SOC transport and mineralization. Runoff plots 10, 20 and 30 m long on a 7% slope under natural rainfall were used. Total soil loss, evolution of CO 2 from the displaced aggregates of various fractions, and total SOC concentrations were determined. It was shown that the primary ways of SOC loss resulted from two processes: 1) mechanical preferential removal of SOC by overland flow and 2) erosion-induced mineralization. Significant amounts of SOC mobilized by erosion at the upper part of the slope during the season (358 kg ha − 1 ) could be lost to the atmosphere within 100 days (15%) and transported off site (44%). Breakup of initial soil aggregates by erosive forces was responsible for increased CO 2 emission. During the initial 20 days of incubation the amount of CO 2 released from coarse size sediment fractions (0.282 g C kg − 1 soil d − 1 ) was 9 times greater than that in fine fractions (0.032 g C kg − 1 soil d − 1 ) due to the greater initial amount of SOC and its exposure to the environment. Sediment size distribution as well as its residence time on the site was the primary controllers of CO 2 loss from eroded soil." @default.
- W1977159749 created "2016-06-24" @default.
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- W1977159749 date "2008-01-01" @default.
- W1977159749 modified "2023-10-16" @default.
- W1977159749 title "Soil organic matter and CO2 emission as affected by water erosion on field runoff plots" @default.
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- W1977159749 doi "https://doi.org/10.1016/j.geoderma.2007.11.005" @default.
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