County level SOC stock 0-30cm (FY2014 gSSURGO)

SSURGO Derived County Soil Organic Carbon 0-30cm soil depth gC/m2

County weighted average Soil Organic Carbon for 30cm depth (gC/m2) computed by area weighting the gSSURGO SOC 30cm depth values to determine a county-wide average. Soil Organic Carbon was computed for a 30cm soil depth (units are g C per square meter) using the methods previously published (Bliss, Waltman, and Petersen, 1995 Preparing a Soil Carbon Inventory of the U.S. Using GIS In. Soils and Global Change, Advances in Soil Science, CRC-Lewis Publishers Boca Raton., pp. 275-295; Bliss, Waltman, and Ping. 2002. Eos Transactions American Geophysical Unit, 83, 47, F0743) using a 12/30/2009 snapshot of the Soil Survey Geographic Database (SSURGO) for the Conterminous U.S. For mapping purposes, the vector SSURGO map layer was gridded to a 10 m resolution in an Albers Equal Area projection for individual States. This gridded vector was called the R&D gridded SSURGO dataset or gSSURGO. SSURGO a digital soil survey and generally is the most detailed level of soil geographic data develo

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12/30/2009 Soil Data Mart snapshot

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Prepared by Critigen staff, need to verify processing steps. Need to verify proper legend graphic is being presented (has the yellow to brown color scale legend used with the gridded SSURGO and STATSGO2 SOC calc's). I think it should be showing the


Critigen staff, based on 12/30/2009 R&D gSSURGO map unit calculations by USDA-NRCS.

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