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ARS Home Midwest Area Ames, Iowa National Laboratory for Agriculture and The Environment Soil, Water & Air Resources Research Research





- Emmett, Bryan
- Malone, Robert - Rob
- Arnold, Jeffrey
- Soil and Air (212)

Research Project: **Location:
                            Soil, Water & Air Resources Research** Project Number: 5030-11610-006-011-N
                        
                        Project Type: Non-Funded Cooperative Agreement Start Date: Apr 1, 2023
                        
                        End Date: Mar 31, 2027 **Objective:**
                        
                        Incorporate soil carbon and nitrogen cycling algorithms of the Denitrification/Decomposition (DNDC) model with the Soil Watershed Assessment Tool (SWAT) to simulate soil organic matter decomposition, dissolved organic carbon generation, and greenhouse gas emissions. Evaluate the model using historical data and new high temporal resolution field data. **Approach:**
                        
                        After model is modified by cooperator, it will be tested using field data collected near Ames, IA (Kelley Drainage Field Plots, KDFP) and using data from the Walnut Creek Watershed and South Fork Iowa River Watershed. ARS will collect high temporal resolution nitrous oxide emission data using automatic chambers to allow for robust model evaluation for ARS in collaboration with the cooperator.


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