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Organic Carbon in Soils of the World

Soil Science Society of America Journal · 1993 · Vol. 57(1) · pp. 192–194

H. Eswaran✉(Natural Resources Conservation Service)Evert van den Berg(Natural Resources Conservation Service)Paul F. Reich(Natural Resources Conservation Service)

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Abstract

Abstract The C stored in soils is nearly three times that in the aboveground biomass and approximately double that in the atmosphere. Reliable estimates have been difficult to obtain due to a lack of global data on kinds of soils and the amount of C in each soil. With new data bases, our study is able to provide more reliable data than previous estimates. Globally, 1576 Pg of C is stored in soils, with ≈ 506 Pg (32%) of this in soils of the tropics. It is also estimated that ≈ 40% of the C in soils of the tropics is in forest soils. Other studies have shown that deforestation can result in 20 to 50% loss of this stored C, largely through erosion.

Soil Carbon and Nitrogen Dynamics Geochemistry and Geologic MappingSoil waterDeforestation (computer science)TropicsEnvironmental scienceCarbon fibersAtmosphere (unit)Biomass (ecology)Soil carbonErosionTotal organic carbon

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