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Soil Inorganic Carbon Storage in the Russian Chernozem.

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Soil Inorganic Carbon Storage in the Russian Chernozem.

(S05-mikhailova748262-poster)

Authors:

E.A. Mikhailova* - Clemson Univ.

C.J. Post - Clemson Univ.

B.R. Smith - Clemson Univ.

Abstract:

Chernozems (Mollisols) play an important role in the global carbon cycle, but their contribution to the soil inorganic carbon (SIC) storage is poorly understood. The objective of this study was to evaluate possible mechanisms of soil inorganic carbon formation in the Russian Chernozem (fine-silty, mixed, frigid Pachic Hapludoll) (predominantly C3 vegetation) under different management regimes: a native grassland field (not cultivated for at least 300 years), an adjacent 50-year continuous-fallow field, the V.V. Alekhin Central-Chernozem Biosphere State Reserve in the Kursk region of Russia, and a continuously cropped field in the Experimental Station of the Kursk Institute of Agronomy and Soil Erosion control. Pedogenic carbonates were examined in each of the treatments using carbon isotope analysis and SEM. Different theories were compared to explain pedogenic carbonate formation in the Chernozems.

Speaker Information: Elena Mikhailova, Clemson Univ., Dept. of Crop and Soil Environmental Science Pool, Clemson, SC 29634; Phone: 8646563535; E-mail: [email protected]

Session Information: Monday, November 3, 2003, 4:00 PM-6:00 PM Presentation Start: 4:00 PM (Poster Board Number: 924)

Keywords: Chernozem; Inorganic Carbon; Carbon Storage; Russia

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