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Title: Modeling the impact of agricultural land use and management on US carbon budgets

Journal Article · · Biogeosciences (Online)

Cultivation of the terrestrial land surface can create either a source or sink of atmospheric CO2, depending on land management practices. The Community Land Model (CLM) provides a useful tool for exploring how land use and management impact the soil carbon pool at regional to global scales. CLM was recently updated to include representation of managed lands growing maize, soybean, and spring wheat. In this study, CLM-Crop is used to investigate the impacts of various management practices, including fertilizer use and differential rates of crop residue removal, on the soil organic carbon (SOC) storage of croplands in the continental United States over approximately a 170-year period. Results indicate that total US SOC stocks have already lost over 8 Pg C (10%) due to land cultivation practices (e.g., fertilizer application, cultivar choice, and residue removal), compared to a land surface composed of native vegetation (i.e., grasslands). After long periods of cultivation, individual subgrids (the equivalent of a field plot) growing maize and soybean lost up to 65% of the carbon stored compared to a grassland site. Crop residue management showed the greatest effect on soil carbon storage, with low and medium residue returns resulting in additional losses of 5 and 3.5%, respectively, in US carbon storage, while plots with high residue returns stored 2% more carbon. Nitrogenous fertilizer can alter the amount of soil carbon stocks significantly. Under current levels of crop residue return, not applying fertilizer resulted in a 5% loss of soil carbon. Our simulations indicate that disturbance through cultivation will always result in a loss of soil carbon, and management practices will have a large influence on the magnitude of SOC loss.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23), Earth System Modeling; National Energy Research Scientific Computing Center (NERSC)
Grant/Contract Number:
AC02-06CH11357; AC02-05CH11231
OSTI ID:
1197737
Alternate ID(s):
OSTI ID: 1201739; OSTI ID: 1396278
Journal Information:
Biogeosciences (Online), Journal Name: Biogeosciences (Online) Vol. 12 Journal Issue: 7; ISSN 1726-4189
Publisher:
Copernicus Publications, EGUCopyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

References (57)

Indirect Emissions from Biofuels: How Important? journal October 2009
Landscapes as patches of plant functional types: An integrating concept for climate and ecosystem models: PLANT FUNCTIONAL TYPES AND CLIMATE MODELS journal May 2002
Current and potential sustainable corn stover feedstock for biofuel production in the United States journal December 2012
Agricultural Management and Soil Carbon Storage in Surface vs. Deep Layers journal January 2011
Tillage and Nitrogen Effects on Soil Organic Matter Fractions in Wheat-based Systems journal January 2006
Soil Organic Carbon Sequestration Rates by Tillage and Crop Rotation journal January 2002
Set-asides can be better climate investment than corn ethanol journal March 2009
Long-term Effects of Tillage and Corn Stalk Return on Soil Carbon Dynamics journal January 2005
Global pattern of soil carbon losses due to the conversion of forests to agricultural land journal February 2014
Soil Carbon Sequestration Impacts on Global Climate Change and Food Security journal June 2004
Corn Stover Removal for Expanded Uses Reduces Soil Fertility and Structural Stability journal January 2009
Spatial Patterns of Soil Organic Carbon in the Contiguous United States journal January 1994
Changes in soil carbon sequestration, fractionation and soil fertility in response to sugarcane residue retention are site-specific journal April 2012
The impact of extensive planting of Miscanthus as an energy crop on future CO2 atmospheric concentrations: GLOBAL MISCANTHUS PLANTATION AND ATMOSPHERIC CO2 journal April 2010
Impacts of nitrogen fertilization on biomass production of switchgrass (Panicum Virgatum L.) and changes in soil organic carbon in Ohio journal October 2011
Biofuels from crop residues journal April 2007
Land Clearing and the Biofuel Carbon Debt journal February 2008
Greenhouse gas contributions and mitigation potential of agriculture in the central USA journal August 2005
Soil quality impacts of residue removal for bioethanol production journal March 2009
Crop residue removal and fertilizer N: Effects on soil organic carbon in a long-term crop rotation experiment on a Udic Boroll journal January 2010
Miscanthus biomass productivity within US croplands and its potential impact on soil organic carbon journal August 2012
The potential of world cropland soils to sequester C and mitigate the greenhouse effect journal May 1999
The Myth of Nitrogen Fertilization for Soil Carbon Sequestration journal January 2007
Changes in population and agricultural land in conterminous United States counties, 1790 to 1997: AGRICULTURAL LAND CHANGE journal December 2002
Topography Influences Management System Effects on Total Soil Carbon and Nitrogen journal January 2009
The Vertical Distribution of soil Organic Carbon and its Relation to Climate and Vegetation journal April 2000
Crop and Soil Productivity Response to Corn Residue Removal journal January 2004
Nitrogen Fertilization Effects on Soil Carbon and Nitrogen in a Dryland Cropping System journal January 1999
Field wind tunnel testing of two silt loam soils on the North American Central High Plains journal September 2013
Changes in soil organic carbon under biofuel crops journal February 2009
Soil carbon dynamics in cropland and rangeland journal March 2002
Contemporary Evidence of Soil Carbon Loss in the U.S. Corn Belt journal January 2009
Carbon payback times for crop-based biofuel expansion in the tropics: the effects of changing yield and technology journal July 2008
Predicting the Spatial Variation of the Soil Organic Carbon Pool at a Regional Scale journal January 2010
Crop residue removal effects on soil carbon: Measured and inter-model comparisons journal October 2012
Monitoring Soil Quality to Assess the Sustainability of Harvesting Corn Stover journal January 2011
Soil C storage as affected by tillage and straw management: An assessment using field measurements and model predictions journal January 2011
Use of U.S. Croplands for Biofuels Increases Greenhouse Gases Through Emissions from Land-Use Change journal February 2008
Soil Erosion: A Carbon Sink or Source? journal February 2008
Biofuels, Land Use Change, and Greenhouse Gas Emissions: Some Unexplored Variables journal February 2009
Ecosystem model spin-up: Estimating steady state conditions in a coupled terrestrial carbon and nitrogen cycle model journal November 2005
Can intra-aggregate pore structures affect the aggregate's effectiveness in protecting carbon? journal February 2013
Integrated BIosphere Simulator (IBIS) Yield and Nitrate Loss Predictions for Wisconsin Maize Receiving Varied Amounts of Nitrogen Fertilizer journal January 2003
Geographic distribution of major crops across the world: GLOBAL CROP DISTRIBUTION journal January 2004
The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 journal January 2013
Crop Residue Removal Impacts on Soil Productivity and Environmental Quality journal April 2009
Long-Term Corn Residue Effects journal January 2004
Grand Challenges for Life-Cycle Assessment of Biofuels journal March 2011
Estimating historical changes in global land cover: Croplands from 1700 to 1992 journal December 1999
Modeling agriculture in the Community Land Model journal January 2013
Changing role of cultivated land in the global carbon cycle journal July 1998
The NCEP/NCAR 40-Year Reanalysis Project journal March 1996
Crop planting dates: an analysis of global patterns: Global crop planting dates journal June 2010
Corn-Soybean Sequence and Tillage Effects on Soil Carbon Dynamics and Storage journal January 2007
Crop Residues: The Rest of the Story journal November 2009
Whole-Profile Soil Carbon Stocks: The Danger of Assuming Too Much from Analyses of Too Little journal January 2011
Nitrogen fertilizer effects on soil carbon balances in Midwestern U.S. agricultural systems journal July 2009