Suchergebnisse

Soils and climate change / Rattan Lal and Ronald F. Follett -- A national assessment of soil carbon sequestration on cropland: a microsimulation modeling approach / Steven R. Potter [and four others] -- Modeling soil organic carbon change in Canadian agroecosystems: testing the introductory carbon balance model / A.J. VandenBygaart [and five others] -- Soil organic carbon stocks with depth and land use at various U.S. sites / Ronald F. Follett [and four others] -- Influence of climate and land use change on carbon in agriculture, forest, and peatland ecosystems across Canada / J.S. Bhatti and C. Tarnocai -- Soil carbon sequestration in different ecoregions of Mexico / Claudio Balbontín [and three others] -- Management of dryland cropping systems in the U.S. Great Plains: effects on soil organic carbon / Mark A. Liebig, M.M. Mikha, and Kenneth N. Potter -- Management effects on soil organic carbon in Texas soils / Kenneth N. Potter, Paul W. Unger, and H. Allen Torbert -- Soil total carbon content, aggregation, bulk density, and penetration resistance of croplands and nearby grasslands / Paul W. Unger -- Soil organic carbon and nitrogen sequestration in irrigated cropping systems of the central Great Plains / Ardell D. Halvorson [and three others] -- Organic carbon stocks and sequestration potential of vertisols in the coast prairie major land resource area of Texas / Lee C. Nordt and Larry P. Wilding -- Influence of management on soil organic carbon dynamics in northern mixed-grass rangeland / G.E. Schuman [and five others] -- Belowground carbon storage and dynamics accompanying woody plant encroachment in a subtropical savanna / T.W. Boutton [and three others] -- Soil organic carbon sequestration by biochemically recalcitrant biomacromolecules / Klaus Lorenz [and three others] -- Stable-carbon isotopes of U.S. Great Plains soils and climate events during the Holocene / Steven W. Leavitt and Ronald F. Follett -- Effects of elevated atmospheric carbon dioxide on soil carbon in terrestrial ecosystems of the southeastern United States / G. Brett Runion [and three others] -- Linking soil organic carbon and environmental quality through conservation tillage and residue management / Alan J. Franzluebbers -- Crop residue management and soil carbon dynamics / Humberto Blanco-Canqui and Rattan Lal -- Organic carbon accumulation in reclaimed mine soils of the western United States / L.J. Ingram [and three others] -- Terrestrial carbon sequestration potential in reclaimed mine land ecosystems to mitigate the greenhouse effect / Raj K. Shrestha, David A.N. Ussiri, and Rattan Lal -- An evaluation of methodologies for assessing geogenic carbon in mine soils of the eastern United States / P.A. Jacinthe [and three others] -- Carbonaceous materials in soil-derived dusts / R. Scott Van Pelt and Ted M. Zobeck -- Carbon dynamics in urban soils / Klaus Lorenz and Rattan Lal -- Priorities in soil carbon research in response to climate change / Rattan Lal and Ronald F. Follett.

Global climate change is a natural process that currently appears to be strongly influenced by human activities, which increase atmospheric concentrations of greenhouse gases (GHG), in particular carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). Agriculture contributes about 20% of the world's global radiation forcing from CO2, CH4 and N2O, and produces 50% of the CH4 and 70% of the N2O of the human-induced emission. Interest is increasing among land managers, policy makers, GHG emitting entities, and carbon (C) brokers in using agricultural lands to sequester C and reduce GHG emission. Precise information is lacking, however, on how specific management practices in different regions of the world impact soil C sequestration and the mitigation of GHG emission. In 2002, the USDA Agricultural Research Service (ARS) developed a coordinated national research effort called GRACEnet (Greenhouse gas Reduction through Agricultural Carbon Enhancement network) to provide information on the soil C status and GHG emission of current agricultural practices, and to develop new management practices to reduce net GHG emission and increase soil C sequestration primarily from soil management. Managing Agricultural Greenhouse Gases synthesizes the wealth of information generated from the GRACEnet project in over 30 ARS locations throughout the US and in numerous peer-reviewed articles. Although GRACEnet is an ARS project, contributors to this work include a variety of backgrounds and reported findings have important international applications. For example, many parts of the world possess similar ecoregions to the U.S. (e.g., northern Great Plains is similar to the Argentina Pampas and Ukraine Steppe). Such similarities expand the appeal of this exciting new volume to a wide international readership. Frames responses to challenges associated with climate change within the geographical domain of the U.S., while providing a useful model for researchers in the many parts of the world that possess similar ecoregions Covers not only soil C dynamics but also nitrous oxide and methane flux, filling a void in the existing literature Educates scientists and technical service providers conducting greenhouse gas research, industry, and regulators in their agricultural research by addressing the issues of GHG emissions and ways to reduce these emissionsSynthesizes the data from top experts in the world into clear recommendations and expectations for improvements in the agricult ...