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The significance of the erosion-induced terrestrial carbonsink

Description: Estimating carbon (C) balance in erosional and depositionallandscapes is complicated by the effects of soil redistribution on bothnet primary productivity (NPP) and decomposition. Recent studies arecontradictory as to whether soil erosion does or does not constitute a Csink. Here we clarify the conceptual basis for how erosion can constitutea C sink. Specifically, the criterion for an erosional C sink is thatdynamic replacement of eroded C, and reduced decomposition rates indepositional sites, … more
Date: October 10, 2006
Creator: Berhe, A.A.; Harte, J.; Harden, J.W. & Torn, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Commercial Ion Exchange Resin Vitrification in Borosilicate Glass

Description: Bench-scale studies were performed to determine the feasibility of vitrification treatment of six resins representative of those used in the commercial nuclear industry. Each resin was successfully immobilized using the same proprietary borosilicate glass formulation. Waste loadings varied from 38 to 70 g of resin/100 g of glass produced depending on the particular resin, with volume reductions of 28 percent to 68 percent. The bench-scale results were used to perform a melter demonstration with… more
Date: May 1, 1998
Creator: Cicero-Herman, C.A.; Workman, P.; Poole, K.; Erich, D. & Harden, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Weathering controls on mechanisms of carbon storage in grassland soils

Description: On a sequence of soils developed under similar vegetation, temperature, and precipitation conditions, but with variations in mineralogical properties, we use organic carbon and 14C inventories to examine mineral protection of soil organic carbon. In these soils, 14C data indicate that the creation of slow-cycling carbon can be modeled as occurring through reaction of organic ligands with Al3+ and Fe3+ cations in the upper horizons, followed by sorption to amorphous inorganic Al compounds at dep… more
Date: September 1, 2004
Creator: Masiello, C. A.; Chadwick, O. A.; Southon, J.; Torn, M. S. & Harden, J. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Stuffing Carbon Away: Mechanisms of Carbon Sequestration in Soils

Description: Soils offer the potential to sequester large quantities of carbon from the atmosphere for decades to millennia and so may ameliorate the anthropogenic influence of fossil fuel release. However changes in climate can drastically affect the soil's ability to store carbon through changes mineralogy on time scales of human interest. It is essential to understand the major controls on soil carbon dynamics before we attempt to manage sequestration to control atmospheric CO{sub 2} buildup. Models of t… more
Date: January 24, 2003
Creator: Reimer, P J; Masiello, C A; Southon, J R; Trumbore, S E; Harden, J W; White, A F et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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