Journal article

Enhancing the soil and water assessment tool model for simulating N2O emissions of three agricultural systems

Q Yang, X Zhang, M Abraha, S Del grosso, GP Robertson, J Chen

Ecosystem Health and Sustainability | Published : 2017

Abstract

Nitrous oxide (N2O) is a potent greenhouse gas (GHG) contributing to global warming, with the agriculture sector as the major source of anthropogenic N2O emissions due to excessive fertilizer use. There is an urgent need to enhance regional‐/watershed‐scale models, such as Soil and Water Assessment Tool (SWAT), to credibly simulate N2O emissions to improve assessment of environmental impacts of cropping practices. Here, we integrated the DayCent model's N2O emission algorithms with the existing widely tested crop growth, hydrology, and nitrogen cycling algorithms in SWAT and evaluated this new tool for simulating N2O emissions in three agricultural systems (i.e., a continuous corn site, a sw..

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