CENTURY Description This agroecosystem model simulates C N P and S dynamics through an annual cycle over time scales of centuries and millennia PDF document - DocSlides

CENTURY Description This agroecosystem model simulates C N P and S dynamics through an annual cycle over time scales of centuries and millennia PDF document - DocSlides

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The producer submodel may be a grasslandcrop forest or savanna system with the flexibility of specifying potential primary production curves representing the sitespecific plant community CENTURY was especially developed to deal with a wide range of ID: 21752

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Presentations text content in CENTURY Description This agroecosystem model simulates C N P and S dynamics through an annual cycle over time scales of centuries and millennia


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CENTURY Description This agroecosystem model simulates C, N, P, and S dynamics through an annual cycle over time scales of centuries and millennia. The producer submodel may be a grassland/crop, forest, or savanna system, with the flexibility of specifying potential primary production curves representing the site-specific plant community. CENTURY was especially developed to deal with a wide range of cropping system rotations and tillage practices for system analysis of the effects of management and global change on productivity and sustainability of agroecosystems. Simulation of complex agricultural management systems, including crop rotations, tillage practices, fertilization, irrigation, grazing, and harvest methods, is now possible. Note CENTURY is also described under agriculture. Appropriate Use Ecosystem application of climate and land use impacts. Scope Site to regional to global analysis of ecosystem biogeochemistry. Key Output Plant productivity, crop yields, vegetation carbon and nitrogen, N mineralization, evapotranspiration, soil water content, soil organic matter carbon and nitrogen content. Key Input Climate, soil texture, land use management. Ease of Use Ecosystem biogeochemistry expertise needed. Training Required Yes. Training Available Yes. Computer Requirements PC-based stand alone version, Linux cluster for regional simulations. Documentation http://www.nrel.colostate.edu/projects/century5/ . http://www.nrel.colostate.edu/projects/century5/reference/index.htm . http://www.nrel.colostate.edu/projects/century/ . Applications Site level to regional simulations of climate and land use effects on ecosystem biogeochemistry and water dynamics. Contacts for Framework, Documentation, Technical Assistance Dr William Parton, NREL at Colorado State University, 1499 Campus Delivery Fort Collins, CO 80523-1499, USA; Tel: 970.491.1987; e-mail: billp@nrel.colostate.edu . Cindy Keough, Natural Resource Ecology Laboratory , Colorado State University , Fort Collins, CO 80523-1499 USA; Tel: 970.491.2195; Fax: 970.491.1965; e-mail: cindyk@nrel.colostate.edu . Cost Not identified.
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CENTURY (cont.) References Kelly, R.H., W.J. Parton, G.J. Crocker, P.R. Grace, J. Klír, M. Körschens, P.R. Poulton, and D.D. Richter. 1997. Simulating trends in soil organic carbon in long-term experiments using the Century model. Geoderma 1258. Ojima, D.S., W.J. Parton, D.S. Schimel, T.G.F. Kittel, and J.M.O. Scurlock. 1993. Modeling the effects of climatic and CO changes on grassland storage of soil C. Water, Air, and Soil Pollution 70:643-657. Parton, W.J., D.S. Schimel, D.S. Ojima, and C.V. Cole. 1994. A general model for soil organic matter dynamics: sensitivity to litter chemistry, texture and management. Pages 147-167 in R.B. Bryant and R.W. Arnold, editors. Quantitative modeling of soil forming processes. SSSA Spec. Publ. 39. ASA, CSSA and SSA, Madison, WI, USA. VEMAP et al., J.M. Melillo, J. Borchers, J. Chaney, H. Fisher, S. Fox, A. Haxeltine, A. Janetos, D.W. Kicklighter, T.G.F. Kittel, A.D. McGuire, R. McKeown, R. Neilson, R. Nemani, D.S. Ojima, T. Painter, Y. Pan, W.J. Parton, L. Pierce, L. Pitelka, C. Prentice, B. Rizzo, N.A. Rosenbloom, S. Running, D.S. Schimel, S. Sitch, T. Smith, and I. Woodward. 1995. Vegetation/ecosystem modeling and analysis project: comparing biogeography and biogeochemistry models in a continental-scale study of terrestrial ecosystem responses to climate change and CO doubling. Global Biogeochemical Cycles 9 :407-437.

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