English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/126566
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Chapter 15. COMET2.0-Decision Support System for Agricultural Greenhouse Gas Accounting

AuthorsPaustian, Keith; Schuler, Jill; Killian, Kendrick; Chambers, Adam; Del Grosso, Steven; Easter, Mark; Álvaro-Fuentes, Jorge ; Gurung, Ram; Johnson, Greg; Merwin, Miles; Ogle, Stephen; Olson, Carolyn; Swan, Amy; Williams, Steve; Vining, Roel
Issue Date2012
PublisherElsevier
CitationManaging Agricultural Greenhouse Gases: 251- 270 (2012)
AbstractImproved agricultural practices have a significant potential to mitigate greenhouse gas (GHG) emissions. A key issue for implementing mitigation options is quantifying emissions practically and cost effectively. Web-based systems using process-based models provide a promising approach. COMET2.0 is a further development of the web-based COMET-VR system with an expanded set of crop management systems, inclusion of orchard and vineyards, new agroforestry options, and a nitrous oxide (N2O) emissions estimator, using the Century and DAYCENT dynamic ecosystem models. Compared to empirical emission factor models, COMET2.0 accounted for more of the between site variation in soil C changes following no-till adoption in Corn Belt and Great Plains experiment sites. Predicted N2O emission rates, as a function of application rate, timing (spring vs. fall), and use of nitrification inhibitors, were consistent with observations in the literature. Carbon dynamics for orchard and agroforestry compared well with field measurements but limited availability of data poses a challenge for a fuller validation of these systems. Advantages of a practiced-based approach, using dynamic process-based models include integration of interacting processes and local conditions for more accurate and complete GHG accounting. Web-based systems, designed for non-experts, allow land managers and others to evaluate trade-offs and select mitigation options for their particular conditions. Experimental networks such as GRACEnet will play an important role in improving decision support tools for implementation of agricultural GHG mitigation.
URIhttp://hdl.handle.net/10261/126566
DOI10.1016/B978-0-12-386897-8.00015-2
Identifiersdoi: 10.1016/B978-0-12-386897-8.00015-2
isbn: 978-0-12-386897-8
Appears in Collections:(EEAD) Libros y partes de libros
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.