U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Northeast Area University Park, Pennsylvania Pasture Systems & Watershed Management Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Adler, Paulitem
                                            Del Grosso, Stephen

                                                         - *Steve*item
                                            PARTON, WILLIAM - COLORADO STATE UNIVitem
                                            EASTERLING, WILLIAM - PENN STATE UNIV
  Submitted to: Climate and Weather Research Workshop Proceedings
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 9/15/2005
                                    Publication  Date: 11/14/2005
                                    Citation: Adler, P.R., Del Grosso, S.J., Parton, W.J., Easterling, W.E. 2005. Determining the long-term impact of bioenergy crops on the global warming potential of energy use [abstract]. U.S. Climate Change Science Program Workshop: Climate Science in Support of Decision Making. p. 62.Interpretive Summary: An interpretive summary is not required.
                                Technical Abstract: As a provider of climate change information, the presenter will describe a framework to assess the impact of different bioenergy cropping systems (corn, soybeans, alfalfa, switchgrass, reed canarygrass, and hybrid poplar) on the global warming potential (GWP) of energy use and examine how the long-term impact of those predictions vary with climate change. Reducing the net GWP of energy use is a major factor driving interest in biofuels. Bioenergy cropping systems vary in contribution to the GWP due to the following:  crop yield and resulting quantity of fossil fuels displaced by the biofuels produced, change in soil organic carbon and belowground biomass carbon, fossil fuels used in feedstock transport to the biorefinery, conversion to biofuel and subsequent distribution, N2O and CH4 emissions, CO2 emission from N fertilizer manufacture, and fuel used by agricultural machinery for tillage, planting, fertilizer/pesticide application, harvesting, and drying corn grain. To conduct a life cycle analysis of the GWP of bioenergy cropping systems, DAYCENT is used to model the dynamic sources and sinks of greenhouse gases (GHGs). Cropping system practices, such as tillage, plant life cycle, and N fertilizer use have a significant impact on GHG emissions. DAYCENT can integrate climate, soil properties, and land use and can dynamically evaluate the impact of cropping systems on crop production, soil C, and trace gas fluxes, factors critical to conducting a full C cycle analysis of bioenergy cropping systems. This approach to determining the GWP of bioenergy cropping systems can be used to extend evaluations from local to regional scales across the United States. By determining the optimal portfolio of bioenergy crops grown regionally, reduction in GWP can be maximized. This analysis can be expanded to include the impact of climate change on crop production and GWP. Weather data driving climate change scenarios are taken from VEMAP for the baseline scenario with no climate change and from the Canadian Centre for Climate Modeling and Analysis (CGCM1model) and Hadley Centre for Climate Prediction and Research, UK (HADCM2 model) for the climate change simulations where CO2 was assumed to double from 2004 - 2100. This modeling approach permits determination of the GWP of bioenergy cropping systems across the United States, including the effect of climate change.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov