HR: 15:30h
AN: B23A-04 INVITED     [Abstracts]
TI: Recent Progress in Biogeochemistry Model Development: Simple vs. Complex Models
AU: * Parton, W
EM: billp@nrel.colostate.edu
AF: Natural Resource Ecology Laboratory, Colorado State University Campus Delivery 1499, Ft. Collins, CO 80523-1499, United States
AB: Biogeochemical models are now used extensively to simulate ecosystem level carbon, nitrogen, and phosphorus dynamics at the site, regional and global scales. These models are widely used to simulate the impact of current agricultural and forestry management practices on nitrogen trace gas fluxes (N₂O, NO_x, and N₂), net carbon exchange, soil NO₃ leaching, nutrient cycling (N and P), and plant production. These models are the major tools we have to project the potential impact of future environmental changes on ecosystem dynamics for natural and managed ecosystems. This presentation will discuss the progress we have made in developing ecosystem models, testing models using observed data sets, comparing the performance of the different models, and applying the models at site regional and global scales. Results from using biogeochemical models at different scales will be presented along with an evaluation of how well the models work and potential problems we have with existing models. I will suggest how we might use newly developed fairly simple ecosystem models when we are modeling carbon exchange and nitrogen dynamics at large scales.
DE: 0400 BIOGEOSCIENCES
SC: Biogeosciences [B]
MN: 2007 Joint Assembly